To find the molecular formula, we will need to first find the molecular mass of the empirical formula and then divide the molecular molar mass by the empirical formula's molecular mass.
Explanation:
Given: Empirical formula = C2H5
Molecular molar mass = 58.14 g/mol
The molecular formula represents the actual number of atoms of each element in a molecule. It is a multiple of the empirical formula.
To determine the molecular formula, we must find the molecular mass of the empirical formula and divide the molecular mass of the compound by the molecular mass of the empirical formula.
The molecular formula mass is determined using the empirical formula mass as a factor. The molecular formula mass is divided by the empirical formula mass to determine the multiplier. The empirical formula is multiplied by the multiplier to get the molecular formula
.The empirical formula mass of C2H5 is (2 x 12.01) + (5 x 1.01) = 29.07 g/mol
Molar mass of the compound = 58.14 g/mol
Divide the molecular molar mass by the empirical formula for mass:58.14 / 29.07
= 2
This indicates that the empirical formula must be multiplied by 2 to obtain the molecular formula. Therefore, the molecular formula is C4H10.
To know more about molecular mass, visit:
https://brainly.com/question/32554128
#SPJ11
Two containers, illustrated below, are filled with the same amount and the same kind of ideal gas.
Which statement correctly describes the relationship between the contents of the two containers?
Container 1 particles have higher average kinetic energy and higher temperature than Container 2 particles.
Container 1 particles have lower average kinetic energy and lower temperature than Container 2 particles.
Container 1 particles have lower average kinetic energy and lower temperature than Container 2 particles.
Container 1 particles have lower average kinetic energy and higher temperature than Container 2 particles.
Container 1 particles have lower average kinetic energy and higher temperature than Container 2 particles.
Container 1 and Container 2 particles have the same average kinetic energy and the same temperature.
Container 1 and Container 2 particles have the same average kinetic energy and the same temperature.
Answer:
Container 1 particles have lower average kinetic energy and higher temperature than Container 2 particles.
Explanation:
Kinetic energy is the speed of the particles in the bottle.
As you can see in the illustration below, the patricles in Picture 2 are moving faster than the ones in Picture 1.
The tempature of Container 1 is higher because all of the particles are sitting on top of one another. Not being able to move, their pressure builds up and creates heat.
Which of the following atoms will have the
most similar properties to the atom shown
below
Answer:
Atom 1. The ratio of Atom 1 to the diagram one is 1/2. It is the most closely related. Feel free to mark brainliest!
Have a great day!
What are the microstructal products of 4340 alloy steel that are first completely transformed to austenite
When 4340 alloy steel is first completely transformed to austenite, it undergoes a process called homogenization.
This process involves heating the steel to a high temperature, typically around 1700°F, for a specific amount of time to ensure that the carbon and other alloying elements are evenly distributed throughout the material. Once the homogenization process is complete, the steel is cooled rapidly to room temperature.
The microstructural products that are formed during this process include a uniform distribution of fine pearlite, martensite, and austenite grains. The fine pearlite and martensite grains result from the rapid cooling of the steel, while the austenite grains are formed during the homogenization process. These microstructures provide the steel with excellent strength, toughness, and wear resistance, making it ideal for use in high-stress applications such as aircraft landing gear, crankshafts, and gears. Overall, the homogenization process plays a critical role in ensuring that 4340 alloy steel possesses the desired microstructural properties.
Learn more about microstructural at
https://brainly.com/question/31665493
#SPJ11
I NEED HELP PLEASE, THANKS!
Electrochemistry is important in many aspects of daily life.
i. Define voltaic cell.
ii. Fill in the blanks for the drawing of a voltaic cell that’s made with copper/copper (II) nitrate (E° = 0.34 V) and zinc/zinc (II) nitrate (E° = –0.76 V). Briefly explain the role of the salt bridge.
iii. Using the equation E°cell = E°cathode – E°anode, calculate the overall cell potential for the cell.
iiii.
a. _____________
b. _____________
c. _____________
d. _____________
e. _____________
f. _____________
g. _____________
h. _____________
Answer:
Here's what I get
Explanation:
(i) Voltaic cell
A voltaic cell is a device that uses a chemical reaction to produce electrical energy.
(ii) Overall Cell Potential
The standard reduction potentials for the half-reactions are
ℰ°/V
Cu²⁺ + 2e⁻ ⇌ Cu 0.34
Zn²⁺ + 2e⁻ ⇌ Zn -0.76
The half-reaction with the more positive potential is the reduction half-reaction. It is the reaction that occurs at the cathode.
The half-reaction with the more negative potential is the oxidation half-reaction. It is the reaction that occurs at the anode.
We reverse that half-reaction and subtract the voltages to get the cell reaction.
ℰ°/V
Cathode: Cu²⁺ + 2e⁻ ⇌ Cu 0.34
Anode: Zn ⇌ Zn²⁺ + 2e⁻ -0.76
Cell: Zn + Cu²⁺ ⇌ Zn²⁺ + Cu 1.10
\(\mathcal{E}_{\text{cell}}^{\circ} = \mathcal{E}_{\text{cat}}^{\circ} - \mathcal{E}_{\text{an}}^{\circ} = \text{0.34 V} - \text{(-0.76 V)} = \text{0.34 V} + \text{0.76 V} = \textbf{1.10 V}\)
(iii) Diagram
The specific labels will depend on your textbook.
They are often as follows.
a. Electron flow
b. Voltmeter or lightbulb
c. Electron flow
d. Cathode or Cu
e. Cu²⁺(aq) and NO₃⁻(aq)
f. Salt bridge
g. Zn²⁺(aq) and NO₃⁻(aq)
h. Anode or Zn
The salt bridge enables ions to flow in the internal circuit and to maintain electrical neutrality in the two compartments.
It often consists of a saturated solution of KCl.
As Zn²⁺ ions form in the anode compartment, Cl⁻ ions move in to provide partners for them.
As Cu²⁺ ions are removed from the cathode compartment, K⁺ ions move in to replace them.
Answer:a. Electron flow
b. Voltmeter or lightbulb
c. Electron flow
d. Cathode or Cu
e. Cu²⁺(aq) and NO₃⁻(aq)
f. Salt bridge
g. Zn²⁺(aq) and NO₃⁻(aq)
h. Anode or Zn
Explanation:
What is the correct term for a community of plants and animals and their physical surroundings?
individuals (organism)
continent
territory
ecosystem
4. [1 mark]
0.10 mol of hydrochloric acid is mixed with 0.10 mol of calcium carbonate.
2HCl (aq) + CaCO3 (s) → CaCl2 (aq) + H₂O (1) + CO2 (g)
Which is correct?
The limiting reagent in a chemical reaction is HCl (aq); the maximum output of CO2/mol is 0.05; and the reactant that is consumed first is CO2.
What does a limiting reagent perform and why is it required?The limiting reactant, sometimes referred to as the limiting reagent, regulates how much product is produced in a chemical process. If the limiting reactant has been found, the theoretical yield of the reaction may be calculated.
What substance is the reaction's limiting agent?The limiting reagent is the one that will completely consume itself in a chemical process. Once that reactant has been used up, the reaction cannot go on. As a result, it stops the reaction from getting stronger. The excess reagent would have continued to react if the other reactant hadn't been consumed.
To know more about limiting reagent visit:
https://brainly.com/question/26905271
#SPJ1
what is the ph of a 0.005 m hcl solution? assume complete dissociation.
The pH of a 0.005 M HCl solution is 2.30 which means that the solution is acidic since the pH is less than 7.
HCl is a strong acid, which means it completely dissociates in water to form H⁺ and Cl⁻ ions. The concentration of H⁺ ions in the solution is equal to the concentration of the HCl solution since it completely dissociates. Using the formula pH=-log[H⁺], we can calculate the pH of the solution.
pH=-log(0.005) = 2.30
Therefore, the pH of a 0.005 M HCl solution is 2.30. This means that the solution is acidic since the pH is less than 7. The lower the pH, the more acidic the solution is. HCl is commonly used in many industrial processes, and understanding the pH of its solutions is important for controlling reactions and ensuring product quality.
Learn more about acid here:
https://brainly.com/question/29796621
#SPJ11
Simon has collected three samples from the coral reef where he observes marine life. He must determine whether
each one is a pure substance or a mixture.
Appearance
When heated
Sample A
Sample B
Sample C
Sample A is a
Clear liquid
Clear, blue
liquid
Opaque, whitish
liquid
Evaporates completely at
70°C
Boils at 90°C, leaving blue
crystals behind
Boils at 100°C, leaving
white crystals behind
Sample B is a
When left over time
Appearance does not change
Appearance does not change
Dust appears to settle to the
bottom
and Sample C is a
Dona
From the collected three samples from the coral reef we can conclude that:
SAMPLE A - pure substance.
SAMPLE B - homogeneous mixture.
SAMPLE C - heterogeneous mixture.
Pure substances and mixtures are the two broad categories into which matter can be divided.
A sort of matter known as a pure substance has qualities that are constant throughout the sample and a stable composition that makes it the same everywhere (meaning that there is only one set of properties such as melting point, color, boiling point, etc. throughout the matter).
A mixture is said to be homogenous if its composition is constant throughout. Because the dissolved salt is evenly distributed throughout the whole salt water sample, the salt water described above is homogenous.
A combination is said to be heterogeneous if its composition is not constant throughout. Vegetable soup is a complex concoction. Each mouthful of soup will have differing percentages of the various veggies and other ingredients.
To learn more about mixtures visit the link:
https://brainly.com/question/24898889?referrer=searchResults
#SPJ9
Which option best describes this type of reaction?
Answer: combustion and exothermic
Explanation: I took the test
Combustion and exothermic describes this type of reaction.
Why are exothermic combustion processes the norm?Products are the most stable and exothermic for every combustion because they are (of an exothermic process) more stable than reactants (whose energy is substantially lower).
A material burns when it reacts with oxygen during combustion, producing energy in the form of heat and light. The temperature rises when the energy generated by an exothermic reaction is released as heat.
Burning and combustion are both terms for the exothermic reaction in which heat is released. Redox chemical processes, which are primarily what occur during combustion, require an oxidant, often air oxygen. In any event, a high-temperature exothermic combustion process occurs when anything burns.
learn more about Combustion and exothermic refer
https://brainly.com/question/2924714
#SPJ13
a solution of 1.80 g of a nonelectrolyte in 500.0 ml of water at 27.0°c has an osmotic pressure of 39.5 mmhg. what is the molar mass of the compound?
Answer:
The osmotic pressure can be calculated using the Van't Hoff equation:Π = MRTwhere M is the molar concentration of the solute, R is the gas constant (0.0821 L atm K^-1 mol^-1), T is the temperature in Kelvin (273.15 K + 27.0°C = 300.15 K), and Π is the osmotic pressure in atmospheres.
Converting mmHg to atmospheres:
39.5 mmHg * 1 atm/760 mmHg = 0.052 atm
Rearranging the equation and solving for M:
M = Π / (RT) = 0.052 atm / (0.0821 L atm K^-1 mol^-1 * 300.15 K)
Next, we can use the molar mass to find the moles of solute:
moles = mass / molar mass = 1.80 g / molar mass
Finally, we can set the moles equal to the molar concentration and solve for molar mass:
M = moles / volume = moles / 0.500 L
moles = M * volume = 0.052 atm / (0.0821 L atm K^-1 mol^-1 * 300.15 K) * 0.500 Lmolar mass = mass / moles = 1.80 g / (moles)
Solving for molar mass gives a value of approximately 86 g/mol.
The molar mass of the non-electrolyte is 169.9 g/mol.
Osmotic pressure is a colligative property of a solution, which means it depends on the number of solute particles in the solution, not on their chemical nature. For a dilute solution of a non-electrolyte, the osmotic pressure is given by the following equation:
π = MRT
where π is the osmotic pressure, M is the molar concentration of the solute, R is the gas constant, and T is the temperature in Kelvin.
In this problem, we are given the mass of the non-electrolyte (1.80 g), the volume of the solution (500.0 mL), and the temperature (27.0 °C), and we are asked to find the molar mass of the compound.
First, we need to calculate the molar concentration of the solution:
M = n/V
where n is the number of moles of the solute and V is the volume of the solution. We can find n by dividing the mass of the solute by its molar mass:
n = m/M
where m is the mass of the solute (1.80 g). Substituting these values into the equation for molar concentration, we get:
M = (1.80 g / M) / (0.5000 L)
Solving for M, we get:
M = 0.07198 g/L
Next, we need to convert the temperature from Celsius to Kelvin:
T = 27.0 °C + 273.15 = 300.15 K
Finally, we can use the equation for osmotic pressure to solve for the molar mass (M) of the non-electrolyte:
π = MRT
M = π / RT = (39.5 mmHg) / (0.08206 L atm/mol K * 300.15 K)
M = 169.9 g/mol
Therefore, the molar mass of the non-electrolyte is 169.9 g/mol.
Know more about "molar mass":-
https://brainly.com/question/21321864#
#SPJ11
Question 1. Give the systematic name for the following compounds.
From the question, we can see that the names of the compounds are;
1. 2,2-dimethylnonane
2. 2,2-dimethylbutane
3. 2,4-diethylcyclopentene
What is systematic naming?The International Union of Pure and Applied Chemistry (IUPAC) criteria and rules are normally followed in order to determine the systematic name of a substance. A defined procedure for identifying both organic and inorganic substances is provided by the systematic naming system, also known as IUPAC nomenclature.
Considerations like stereochemistry, ring systems, or several functional groups may be necessary for complex molecules. Such situations may benefit from examining in-depth references or using specialized software.
Learn more about systematic naming of compounds:https://brainly.com/question/28907449
#SPJ1
Explain whether changing the ratio of baking soda and vinegar changes the amount of carbon dioxide produced. Include the evidence you used to reach your conclusion.
On changing the ratio of baking soda and vinegar changes the amount of carbon dioxide produced is true, because each species will depends on both reactants.
What is chemical reaction?Chemical reaction between baking soda and vinegar is shown below in the attached image in which the formation of carbon dioxide, water and sodium acetate takes place. So the formation of carbon dioxide depends on the baking soda and baking soda reacts with vinegar to form sodium acetate so change in the ratio will changes the amount of carbon dioxide.
Hence on changing the ratio of reactants and vinegar changes the amount of carbon dioxide.
To know more about chemical reactions, visit the below link:
https://brainly.com/question/26018275
Calculate the number of molecules of sulphur S8 in 8 gram of solid Sulphur
Answer:
12gram
Explanation:
test told me
A cube measuring 1cm x 1cm x 1cm is full of water, What is the mass of the water in the cube? (Water has a density of 1.0)
d= m/v
1.0=m/1cm^3
1.0×1cm^3=m
m=1kg/cm^3
HELPPP!! ASAP PLEASEEEEEE
polyvinyl chloride (pvc) is made from the monomer, ch2 chcl. which would not be a possible arrangement in pvc?
Among the given options, an arrangement where two chlorine atoms are adjacent to each other would not be a possible arrangement monomer in polyvinyl chloride (PVC).
Polyvinyl chloride (PVC) is a polymer made from the monomer vinyl chloride, which has the chemical formula CH2=CHCl. In the polymerization process, multiple vinyl chloride monomers combine to form a long chain polymer structure.
In PVC, the chlorine atom (Cl) in the monomer is attached to the carbon atom adjacent to the double bond. The carbon-carbon backbone of PVC consists of alternating carbon and chlorine atoms along the polymer chain. This alternating arrangement of carbon and chlorine atoms gives PVC its characteristic properties, including its strength, durability, and resistance to chemicals.
Since the chlorine atoms are attached to alternating carbon atoms, it is not possible for two chlorine atoms to be adjacent to each other in the PVC polymer chain. If such an arrangement were to occur, it would result in an unstable structure that is not characteristic of PVC. Therefore, an arrangement where two chlorine atoms are adjacent would not be a possible arrangement in PVC.
Learn more about polyvinyl chloride (PVC) here
https://brainly.com/question/31754079
#SPJ11
Methanol burns in oxygen to form carbon dioxide and water.
Part A Write a balanced equation for the combustion of methanol. 2CH3OH(l)+3O2(g)→2CO2(g)+4H2O(g)
Part B Calculate ΔH∘rxn at 25 C.
Part C Calculate ΔS∘rxn at 25 C.
Part D Calculate ΔG∘rxn at 25 ∘C.
Part E Is the combustion of methanol spontaneous?
Methanol combustion in oxygen can be represented as shown below;2CH3OH(l)+3O2(g)→2CO2(g)+4H2O(g)
To calculate ΔH∘rxn at 25 C we can use the equation:ΔHrxn∘=∑nΔHf∘(products)−∑mΔHf∘(reactants)where ΔHrxn∘ is the standard enthalpy of the reaction at constant pressure, ΔHf∘ is the standard enthalpy of formation of a substance, n and m are stoichiometric coefficients of the products and reactants, respectively.
The standard enthalpy of formation of methanol, CO2 and H2O are as follows:ΔHf∘(CH3OH(l))=−238.9 kJ/molΔHf∘(CO2(g))=−393.5 kJ/molΔHf∘(H2O(g))=−241.8 kJ/mol∑nΔHf∘(products)=(2×−393.5)+(4×−241.8)=−1299.2 kJ/mol∑mΔHf∘(reactants)=(2×−238.9)+(3×0)=−477.8 kJ/molΔHrxn∘=−1299.2−(−477.8)=−821.4 kJ/mol
To calculate ΔS∘rxn at 25 C we can use the equation:ΔSrxn∘=∑nS∘(products)−∑mS∘(reactants)where ΔSrxn∘ is the standard entropy of the reaction at constant pressure, S∘ is the standard entropy of a substance, n and m are stoichiometric coefficients of the products and reactants, respectively.
The standard entropy of methanol, CO2 and H2O are as follows: S∘(CH3OH(l))=126.8 J/(mol K)S∘(CO2(g))=213.8 J/(mol K)S∘(H2O(g))=188.7 J/(mol K)∑nS∘(products)=(2×213.8)+(4×188.7)=1119.6 J/(mol K)∑mS∘(reactants)=(2×126.8)+(3×205.0)=789.4 J/(mol K)ΔSrxn∘=1119.6−789.4=330.2 J/(mol K)
To calculate ΔG∘rxn at 25 C we can use the equation:ΔGrxn∘=ΔHrxn∘−TΔSrxn∘where ΔGrxn∘ is the standard free energy change of the reaction at constant pressure, T is the temperature in kelvin.
T = 25+273.15=298.15 K. Substituting the values;ΔGrxn∘=−821.4−(298.15×0.33)=−721.3 kJ/mol. The combustion of methanol is exothermic, the value of ΔH∘rxn is negative. The value of ΔS∘rxn is also positive, implying that there is an increase in disorder of the system. Since ΔG∘rxn is negative, the combustion of methanol is spontaneous.
The combustion of methanol in oxygen is a spontaneous process with ΔHrxn∘=−821.4 kJ/mol, ΔSrxn∘=330.2 J/(mol K) and ΔGrxn∘=−721.3 kJ/mol.
To know more about combustion, visit
https://brainly.com/question/29772030
#SPJ11
Which statement describes a causal relationship between two variables?
The statement that describes a casual relationship between two variables would be a correlation.
What is correlation?Correlation is a statistical term used to describe the relationship between two variables. The strength of the correlation between two variables is measured by a factor known as the correlation coefficient. The correlation coefficient is represented by r.
The value of r ranges from -1 to +1.
A positive r means that the two variables have the tendency to increase together. That is a direct relationship.A negative correlation means the two variables have an inverse relationship. As one is increasing, the other is decreasing, and vice versa.A correlation of 0 means that the two variables have no linear correlation with each otherA correlation of 1 means the two variables are perfectly correlated.Thus, the casual realtionship between two variables is best described as correlation.
More on correlation can be found here: https://brainly.com/question/15577278
#SPJ1
when should you remove the rubber tubing from the filter flask?
Rubber tubing is removed from the filter flask after filtration is done. After filtration, the liquid may have gone through several separations and been filtered of any solid. This means that the remaining material can be easily poured out, but care must be taken not to allow the filter paper or any solids to come out of the funnel while pouring.
To remove the tubing, one should first ensure that the filtration is done and that the contents of the flask have been emptied completely. Then, while holding the funnel with one hand, gently grasp the tubing where it is attached to the flask with the other hand and pull it off gently. After that, one should clean the funnel and flask thoroughly to ensure that there is no contamination or residue that may affect future experiments.The use of rubber tubing is essential to attach a filter flask to the vacuum pump. When the pump is turned on, the air in the flask and the filter paper is removed, causing a pressure difference that helps pull the liquid through the filter paper, leaving behind any solid particles. When filtration is complete, the vacuum pump is turned off and the rubber tubing is removed from the flask to allow for the collection and disposal of the filtrate.
To know more about filtration visit :
brainly.com/question/31609992
#SPJ11
he statements in the tables below are about two different chemical equilibria. the symbols have their usual meaning, for example stands for the standard gibbs free energy of reaction and stands for the equilibrium constant. in each table, there is one statement that is false because it contradicts the other three statements. when you find a false statement, check the box next to it. statement false? statement false?
\(\Delta\)G = 0 when a system is in equilibrium. \(\Delta\)G<0 if the process is spontaneous.
Why is it called Gibbs free energy?Gibb's free energy is named free energy because it is readily available at all times. If necessary, the reaction can obtain this energy without having to do any effort. The change in Gibb's free energy is the sum of enthalpy and the product of the system's temperature and entropy.The standard change in free energy, or the change in free energy under standard conditions, is denoted as delta-G zero. R represents the gas constant, T represents the temperature in Kelvin, and K represents our equilibrium constant. So, if you use this equation, you're in equilibrium, and delta-G equals zero.The equation for the relationship between Gibbs energy and the equilibrium constant is \(\Delta\)Go=RTlnKeq.\(\Delta\)G = 0 when a system is in equilibrium. \(\Delta\)G<0 if the process is spontaneous.To learn more about Gibbs free energy refer,
https://brainly.com/question/13765848
#SPJ4
A chemical reaction in which one element replaces another element in a compound can be catergorized as a
Answer:
\(\huge\boxed{\sf Single \ displacement \ reaction}\)
Explanation:
Displacement reaction:A reaction in which an element displaces or replaces another element of a compound is called a displacement reaction.Types:There are 2 types:
1. Single displacement reaction:If one element displaces 1 other element of a compound, it is called single displacement reaction.Example: \(CuSO_4 +Fe \longrightarrow \ FeSO_4 + Cu\)Here, 1 element (Fe) displaces 1 other element (Cu) of a compound.2. Double displacement reaction:If two elements in two compounds displace one another, it is called double displacement reaction.Example: \(CuSO_4+NaOH \longrightarrow Cu(OH)_2 + Na_2SO_4\)Here, Copper and sodium both displace each other.\(\rule[225]{225}{2}\)
CLOZE 2
The only way to know for sure if a chemical reaction has occurred is to identity that a new
has been formed. There are
we can look
for that help to determine if a chemical reaction has occurred. One sign of a chemical reaction
is the formation of a
observed as bubbling, flezing, or foaming.
Some chemical reactions, like the burning of wood, result in the production of
A change in
either an increase or
decrease, can indicate that a chemical reaction has occurred. The formation of a precipitate is
another sign of a chemical reaction. A
is a solid substance that
separates from a solution. A change in
such as we see
ng of a bike chain, is the final sign that a chemical reaction has occurred. If one or
Answer:
Explanation:
The only way to know for sure if a chemical reaction has occurred is to identity that a new compound has been formed. There are signs
we can look for that help to determine if a chemical reaction has occurred. One sign of a chemical reaction is the formation of a gas
observed as bubbling, flezing, or foaming.
Some chemical reactions, like the burning of wood, result in the production of heat or light energy.
A change in temperature either an increase or decrease, can indicate that a chemical reaction has occurred.
The formation of a precipitate is another sign of a chemical reaction. A
precipitate is a solid substance that separates from a solution.
A change in color such as we see in the rusting of a bike chain, is the final sign that a chemical reaction has occurred. If one or more of these signs is
presnt, a chemical reaction has occurred
chemical analysis of an unknown compound shows that it contains 64.9% c, 13.5% h, and 21.6% o by mass. at 120oc and 750 mmhg, 2.00 l of the gaseous compound weighs 9.1 g. a. what is the empirical formula of the compound?
The empirical formula of the compound C₄H₁₀O₁.
The empirical method of a chemical compound is the simplest entire range ratio of atoms present in a compound. The empirical formula of a compound is the most effective whole variety ratio of atoms of each detail in the compound.
Step 1: decide the masses. Step 2: decide the variety of moles by dividing the grams by means of the atomic mass. Step 3: Divide the wide variety of moles of every detail through the smallest quantity of moles. Step 4: Convert numbers to complete numbers.
divide by smallest
64.9% C /12 = 5.4 5.4/ 13.5 = 4
13.5% / 1 H = 13.5 13.5 /1.35 = 10
21.6% / 16 O = 1.35 1.5/1.5 = 1
Empherical formula = C₄H₁₀O₁
Learn more about empirical formula here:-https://brainly.com/question/1603500
#SPJ4
Brainliest to first decent answer
What is the chemical formula for the molecule represented by the model?
CHO
C4H9O2
C4H8O
C3H8O2
The correct formula of the molecule is C4H9O2.
What is a model?The model of a compound is a representation of the molecule. It gives us an idea of what the molecule looks like as well as its molecular formula.
Looking at the structure of the compound as shown in the model in the question, the correct formula of the molecule is C4H9O2.
Learn more about molecular model:https://brainly.com/question/156574?
#SPJ1
Answer:C4H9O2.
Explanation:
You add 9.8 g iron to 29.30 mL of water and observe that the volume of iron and water together is 30.55 mL . Calculate the density of iron. Express your answer to two significant figures with the appropriate units
According to the given question the density of Iron is 7.84 g/mL
Given data:
Mass of Iron = 9.8 g
Initial volume of water = 29.30 mL
Final volume of Iron and water = 30.55 mL
We can use the formula of density, which is:
Density = mass/volume
To calculate the density of iron, we need to first calculate the volume of Iron. We can do this using the equation of the total volume of Iron and water.
Volume of Iron = Final Volume - Initial Volume of water
Volume of Iron = 30.55 mL - 29.30 mL
Volume of Iron = 1.25 mL
Now, we can substitute the values of mass and volume into the formula of density:
Density of Iron = mass/volume
Density of Iron = 9.8 g / 1.25 mL
Density of Iron = 7.84 g/mL
Thus, the density of Iron is 7.84 g/mL (rounded off to two significant figures).
To know more about density visit :
https://brainly.com/question/29775886
#SPJ11
In an ecosystem, why can only one species fill an ecological niche?
Answer:
Explanation:es porque las especies con nichos idénticos tienen las mismas necesidades, lo que significa que competirían exactamente por los mismos recursos.
students of different ages were given the same puzzle to assemble. The puzzle assembly time was measured.
what is the independent variable?
what is thw dependent variable?
what is the constant?
Answer:
1. Age
2. Time
3. Same Puzzle
Explanation: Independent variable are what changes in the experiment and allow you to get a result. Dependent variables measure what you are trying to find from an experiment. Constants are what remain the same throughout all trials.
The amount of matter in an object is its
OA. Volum
OB. mass
Oc. density
OD. charge
Photosynthesis is the process in which plants use sunlight to convert water and carbon dioxide into glucose and oxygen. Which of these statements explains why photosynthesis is a chemical change?
A New substances are formed with properties that are different from the original substances.
B New substances are formed but their properties are the same as the original substances.
C No new substance is formed but some of the properties change.
D No new substance is formed and the change is easily reversible. Which of the following images shows a chemical change?
Photosynthesis is a chemical change as:
A. New substances are formed with properties that are different from the original substances.
What is a Chemical Change?A chemical change happens when one chemical substance is transformed into one or more different substances. A chemical change is different from a physical change, which doesn't rearrange atoms or molecules and produce a completely new substance.
Thus, correct option is A which proves that photosynthesis is a chemical change.
Find more information about Chemical change here: brainly.com/question/453535
How many molecules of O2 will be required to produce 28.8 g of water? 2H2 + O2 ---> 2H₂O
Answer:
I think 1.67 x 10^20
Explanation: