Determine the mass of ammonium chloride, NH4Cl, required to prepare 0. 250 L of a 0. 35 M solution of ammonium chloride.
Answers
Answer: 4.7g NH4Cl
Explanation:
First we need to determine how many moles of NH4Cl we have:
0.250Lx0.35M= 0.0875moles
now we can multiply the molar mass of NH4Cl by how many moles we have
NH4Cl has a molar mass of 53.49g/mol
53.49 x 0.0875= 4.68g NH4Cl or 4.7g NH4Cl using 2 sig figs.
Related Questions
how many gr of MGSO4 do we get from the reaction of 2 moles MGO with H2SO4?
Answers
We can produce 240.74 g of Magnesium sulfate from the reaction of 2 moles of Magnesium oxide with Sulfuric acid.
How can you figure out how many grammes a reaction produces?As a result, we can see that we may obtain moles of our initial reactant by dividing its original mass in grammes by its molar mass. To obtain moles of product, multiply those grammes by the products-to-reactants ratio, which is 2:4. Lastly, we multiply the product's moles by its molar mass to obtain its grammes.
Magnesium oxide + Sulfuric acid → Magnesium sulfate + Water
The molar mass of Magnesium sulfate is:
Magnesium sulfate = 24.31 + 32.06 + (4 x 16.00) = 120.37 g/mol
So, 2 moles of Magnesium sulfate would have a mass of:
mass = 2 moles x 120.37 g/mol = 240.74 g
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In a sample of copper carbonate, how much copper and oxygen would there be for 5 g of carbon?
Answers
Hot water heaters often have warning labels indicating that injuries can result when the temperature of the water is above 125°F. What is this temperature in degrees Celsius and in kelvins?
Answers
Answer: 51.6667c 324.817K
Explanation:
125°F temperature in degrees Celsius is 51.67 °C and in kelvins is 324.67 kelvin.
Temperature is a bodily amount that expresses the hotness of a count number or radiation. There are 3 kinds of temperature scales.
Temperature is the diploma or depth of the warmth present in a substance or a machine, expressed primarily based on the comparative scale and proven by a thermometer. In other phrases, Temperature is the degree of hotness or coldness of a frame measured by the usage of Celsius, Kelvin, and Fahrenheit scales.
Temperature is measured with thermometers. commonplace thermometers include a tumbler rod with a totally skinny tube in it. The tube carries a liquid that is furnished from a reservoir, or "bulb," at the base of the thermometer. every now and then the liquid is mercury, and every so often it is pink-colored alcohol.
To convert °C into Fahrenheit:-
F = 9/5 °C + 32
°C = (F - 32)× 5/9
= (125 -32) × 5/9
= 93 × 5/9
= 51.67 °C
°C into Kelvin:-
K= °C + 273
k = 51.67 + 273
= 324.67 kelvin.
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Resistance of 50W bulb is greater than that of 100 W.
Reason
Resistance of bulb is inversely proportional to rated power.
Resistance of 50W bulb is greater than that of 100 W.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Both Assertion and Reason are incorrect
Hard
Answers
The correct answer is C) Assertion is correct, but Reason is incorrect.
The statement in the Assertion is correct: The resistance of a bulb is inversely proportional to its rated power. In general, a higher wattage bulb will have a lower resistance compared to a lower wattage bulb.
However, the Reason provided is incorrect. It states that the resistance of a 50W bulb is greater than that of a 100W bulb, which is not true based on the relationship between resistance and rated power.
According to the relationship mentioned, the resistance of a 100W bulb would be lower compared to a 50W bulb.
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PLEASE HELP ME : IT'S ABOUT SCIENCE
Energy is the ability to do work, and to do work means to move something. Every time you or any of your cells move (which is all the time), you are using energy. Humans get all of our energy from eating things. Plants get their energy from the sun. In fact, nearly all the energy on our planet comes from the sun.
Because the sun is a giant fusion reactor, it constantly bombards Earth with energy, which is transferred, stored, and used in many ways. Energy conversion is the transfer of energy from one form to another. For example, chemical energy is stored in the cells of green plants through a process called photosynthesis. This chemical energy started as solar energy, which was converted through a chemical process. The light energy breaks down the chemical bonds in carbon dioxide molecules and converts them to oxygen and carbohydrates (molecules of hydrogen and carbon). When you eat something, the muscles in your body use this stored chemical energy from the sun by splitting the carbohydrate molecules to gain their stored, potential energy.
Most of the energy on Earth comes from____
A) chemicals.
B) the sun.
C) photosynthesis.
D) carbohydrates.
Answers
The sun gives off radiant energy onto earth
Of the metals shown in the figure, which has the highest
melting point? Which has the lowest?
Answers
The metal that has the highest melting point is Mo while the metal that has the lowest melting point if Fr.
Melting points of metalsMetals are those elements found towards the left hand side of the periodic table. They are able to loose electrons easily and they have a high , melting and boiling point.
The metal that has the highest melting point is Mo while the metal that has the lowest melting point if Fr. This is clear from the chart of melting points in the image attached to the question.
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As the ball moves from Point 3 to Point 4, which energy conversion is taking place?
Answers
Answer:
Potential energy to kinectic energy
Explanation:
Reptiles, birds, and mammals reproduce by what type of
fertilization?
The correct answer is Internal
Answers
Internal Fertilization
Mass spectrometry is more often applied to molecules than to atoms. We will see in Chapter that the molecular weight of a molecule is the sum of the atomic weights of the atoms in the molecule. The mass spectrum of H is taken under conditions that prevent decomposition into H atoms. The two naturally occurring isotopes of hydrogen are H (atomic mass = 1.00783 amu; abundance 99.9885%) and H (atomic mass = 2.01410 amu; abundance 0.0115%). How many peaks will the mass spectrum have? Give the relative atomic masses of each of these peaks. (c) Which peak will be the largest, and which the smallest?
Answers
Answer:
See explanation
Explanation:
There will be three peaks. The relative masses of each of the peaks is shown below;
1H - 1H peak will have a mass of 2*1.00783 amu = 2.01566 amu
1H -2H peak will have a mass of 1.00783 amu + 2.01410 amu = 3.02193 amu
2H - 2H peak will have a mass of 2*2.01410 amu = 4.0282 amu
The 2H - 2H peak is the smallest while 1H - 1H peak is the largest.
2 C 8H18 + 25 O2 → 16 CO2 + 18 H2O
How many molecules are there of your compound?
How many elements are in your compound?
Answers
The amount of octane needed is equal to the amount of carbon dioxide and water produced, which is 16 + 18 = 34 molecules.
How does 2 C8H18 25 O2 16 CO2 18 H2O react?The given response is displayed below. When this hydrocarbon (C8H18 C 8 H 18) burns with oxygen (O2) to produce carbon dioxide (CO2 C O 2) and water, this chemical reaction is a combustion reaction ( H2O H 2 O ).
How are the number of molecules determined?Determine the substance's molecular weight for one mole in order to calculate the necessary number of molecules. Next, divide the molar mass value by the molecular mass, and multiply the result by the Avogadro constant.
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an aerosol can contains 400. ml of compressed gas at 5.20 atm. when all of the gas is sprayed into a large plastic bag, the bag inflates to a volume of 2.14 l. what is the pressure of gas in the plastic bag? assume a constant temperature.
Answers
The pressure in the plastic bag is equal to the initial pressure of the gas in the aerosol can, which is 5.20 atm.
What is aerosol?Aerosol is a type of suspension of fine particles or liquid droplets in air or another gas. Aerosols are typically created when a material is dispensed from a pressurized container and dispersed in the form of a spray, mist, foam, or foam. Examples of aerosols include dust, smoke, smog, fog, and spray paint. Aerosols can also be generated naturally, such as the spraying of saltwater droplets from the ocean’s surface. Aerosols are important for many scientific and industrial applications, such as in medicine, agriculture, and manufacturing. They are also essential in the production of consumer products such as cosmetics, paints, and cleaners. Aerosols also play a key role in the global climate system, as they affect the amount of sunlight that reaches the Earth’s surface and the formation of clouds. Aerosols are also used in research and environmental monitoring, as they can provide information about air quality and climate change.
This is because, as the gas is sprayed out of the can into the plastic bag, it expands and its pressure decreases. However, the pressure of the gas in the plastic bag will stay the same as the pressure of the gas in the aerosol can, so long as the temperature of the gas stays constant. This is because, according to the ideal gas law, the pressure of a gas is directly proportional to its temperature. Therefore, the pressure of the gas in the plastic bag will be 5.20 atm.
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the overall take away of an experiment’s results is the______. A. hypothesis B. introduction C. conclusion
Answers
Answer:
conclusion
Explanation:
it can't be a hypothesis since tests are carried out to verify so it is not a theory
an introduction to an experiment only gives the basis of what we are investigating therefore nothing has been proven and the question is still unanswered
The overall takeaway of an experiment’s results is the conclusion. Hence, option C is correct.
What is a hypothesis?A hypothesis is a testable statement about the relationship between two or more variables or a proposed explanation for some observed experiment.
The overall takeaway of an experiment’s results can't be a hypothesis since tests are carried out to verify so it is not a theory
An experiment only gives an idea about the investigation therefore nothing has been proven and the question is still unanswered.
Hence, the overall takeaway of an experiment’s results is the conclusion.
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Can someone solve this? ill give brainliest or however you spell it.
16 g CH4 + 64 g O2 → 44 g CO2 + 36g H2O
Answers
Given that 16 g CH4 + 64 g 02 - 44 g CO2 + 36g H2O
To explain the law of conservation of mass and describe how the equation represents the law of conservation of mass, let me first start from law.
The law state that: mass can neither be created nor destroyed.
The mass of each element at the reaction side must be equal or the Same with the magnitude of mass at the product
The equation represents the law of conservation of mass because the mass of molecules at the right hand side is equal to or balance with the molecules at the left hand side. For example, the number of Oxygen, and othe elements are the at both side.
Answer:
CH4(g) + 2O2(g)→ CO2(g) + 2H2O(g) Which ... Since 1 mole methane = 12+4×1=16 g and 2 mole oxygen =2×32=64 g, ... 1 molecule or 16 g) of CH4 reacts with 2 moles or 2 molecules or 64 g of ... or 1 molecule or 44 g of CO2 and 2 mole or 2 molecules or 36 g of water.
Explanation:
here is a combustion of methane bc im stupid
Can I Plz Have help?!?!?!?
(Q1) What is the correct value for coefficient (A)?
A. 1
B. 2
C. 3
D. 4
(Q2) What is the correct value for coefficient (B)?
A. 1
B. 2
C. 3
D. 4
(Q3) What is the correct value for coefficient (C)?
A. 1
B. 2
C. 3
D. 4
(Q4)What is the correct value for coefficient (D)?
A. 1
B. 2
C. 3
D. 4
(Q5) If there is enough energy and H2, then how many moles of Sn02 will react with 2 moles of H2 and produce 1 mole of Sn and 2 moles of H2O? How many moles of SnO2 does this balanced equation represent?
A. 0.5
B. 1.0
C. 1.5
D. 2.5
(Q6)The reactants in this equation are _________.
A. SnO2 and Sn
B. Sn and H2O
C. SnO2 and H2
D. H2 and H2O
(Q7)The products in this equation are _________.
A. SnO2 and Sn
B. Sn and H2O
C. SnO2 and H2
D. H2 and H2O
(Q8)This reaction is ___________.
A. endothermic
B. exothermic
Answers
Answer:
1. A
2. B
3. A
4. B
5. B
6.C
7. B
8. A
Explanation:
SnO₂ + H₂ + energy → Sn + H₂0
The reaction is between Tin(iv) oxide and hydrogen gas to form tin and water molecules.
Notice the reaction is not balance therefore let us balance the equation. To balance the equation the number of atoms on both side (reactant and product)of the equation must be equal.
SnO₂ +2H₂ → Sn + 2H₂0
The equation is balanced . SnO₂ has coefficient of 1 , H₂ has coefficient of 2, Sn has coefficient of 1 and H₂0 has coefficient of 2.
Q5
SnO₂ + 2H₂→ Sn + 2H₂0
1 moles of SnO₂ will balance the equation
Q6
The reactant is on the left side of the chemical equation. Therefore the reactants are Tin(iv) oxide and hydrogen molecules (SnO₂ and H₂)
Q7
The product is on the right side of the chemical equations .Therefore, the products are Tin and water molecules(Sn and H₂0).
Q8
The reaction is an endothermic reaction because it absorb heat from it environment.
PLEASE HELPPPPPPPPPPPPPPPP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE LOL
PLEASE WRITE IN YOUR OWN WORDS
1. After your body breaks food down, what are three things that can happen to the atoms from your food? *
2. Would you be able to get energy from food if there weren’t chemical reactions in your body? Why or why not? *
Answers
Answer:
1 Once proteins, fats and carbohydrates are digested, absorption takes place in the small intestine.
2 if we eat food we get energy, but if there weren't chemical reaction in your body nothing happens.
Explanation:
1 Most of the digestion occurs in the first part of the small intestine while the absorption of broken down nutrients, water, vitamins, and minerals occurs in the rest of it.
GIVING BRAINLIEST TO WHOEVER ANSWERS THIS!!
What is the density of rod D, in g/cm3 ? Mass is 15 grams and volume is 14 cm3.
A: 2.5 g/cm3
B: 1.4 g/cm3
C: 1.1 g/cm3
D: 0.94 g/cm3
Answers
Answer:
The answer is option CExplanation:
The density of a substance can be found by using the formula
\(density = \frac{mass}{volume} \\ \)
From the question we have
\(density = \frac{15}{14} \\ =1.0714285 ...\)
We have the final answer as
1.1 g/cm³Hope this helps you
I need help it’s due in a couple minutes !
Answers
Answer:
chemical composition
A solution prepared by dissolving 180.0 mg of a sugar (a molecular compound and a nonelectrolyte) in 1.00 g of water froze at -1.86°C. What is the molar mass of this sugar? The value of Kf is 1.86°C/m._______ g/mol
Answers
Answer:
180 g/mol.
Explanation:
What is given?
ΔT = [0 - (- 1.86 )] °C = 1.86 °C.
i = 1 (for a nonelectrolyte).
Kf = 1.86 °C/m.
Step-by-step solution:
To solve this problem, we have to use the boiling point elevation formula, which is the following:
\(\Delta T=i\cdot m\cdot K_f.\)Where ΔT is the change in boiling point, i is the Van't Hoff factor, m is the molality of solution, and Kf is the molal boiling point constant.
Let's calculate the molality with the given data:
\(m=\frac{\Delta T}{i\cdot K_f}=\frac{1.86\text{ \degree C}}{1\cdot1.86\text{ }\frac{\degree C}{m}}=1\text{ m.}\)1 m is the same that 1 mol/kg. As we have 1.00 g of water and 180.0 mg of the sugar, we can multiply 1 mol/kg by the mass of water. Remember that 1 kg equals 1000 g, so 1.00 g is the same that 0.001 kg:
\(1\text{ }\frac{mol}{kg}\cdot0.001\text{ kg=0.001 mol.}\)Remember that the units of the molar mass is in g/mol, and 1 g equals 1000 mg, so 180.0 mg is the same that 0.18 g. If we divide 0.18 g by 0.001 mol, we will obtain the molar mass of the sugar, which would be:
\(\begin{gathered} Molar\text{ mass=}\frac{0.18\text{ g}}{0.001\text{ mol}}, \\ Molar\text{ mass=180}\frac{g}{mol}. \end{gathered}\)The answer would be that the molar mass is 180 g/mol.
Why are 99.9% of metals (pure) way more expensive than 95% metals?
Answers
Answer:
A pure metal is any metal that has not been joined with any other metal
Explanation:
Answer:
Be cause of The fat
Explanation:
It’s just fat
Question 11
Which formula represents a hydrocarbon?
C₂H6
C₂H5OH
C₂H5Cl
C₂H6O
Answers
Answer:
C₂H6
Explanation:
Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A
A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:
A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.
B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.
C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.
D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.
Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.
In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A
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What is the charge of Cl2?
Answers
Answer:
Cl2 does not have any charge
Explanation:
But when it is present in its ionic form then chlorine have -1 charge on it. But charge on chlorine varies from -1 to +7
How many kilograms of chlorine are in 24 kg of each of the following chlorofluorocarbons (cfcs)?.
Answers
Mass Fraction: The ratio of one amount to another by mass is referred to as a compound's mass fraction. A unit less variation exists in mass fraction.
molar mass C2F3CL3= 84g/mol
moles C2F3CL3 =24 kg x 1000g/kg x 1 mol/84g = 286 moles
moles cl= 286 moles C2F3CL3 x 3 mol cl/ mol = 858 moles cl
kg cl= 858 moles cl x 35 g cl /mol x 1kg/1000g =30 kg cl
35 kg of chlorine are in 24 kg of each of the following chlorofluorocarbons(CFCs)
Chemicals with carbon, chlorine, and fluorine atoms are known as chlorofluorocarbons (CFCs), and they are neither poisonous nor combustible. They are employed as solvents, refrigerants, blowing agents for foams and packaging materials, and in the production of aerosol sprays. They are also commonly known by the DuPont brand name Freon.
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name the compounds that are likely to form: CaKr, Na2S, BaCl3, MgF
Answers
Answer:
CaKr Na2S BaCl3 MgF. CaKr-Kr is a noble gas Na2S-not balanced BaCl3-not balanced MgF-not balanced.
Explanation:
The CaKr is compound which is likely to form because its charge will be balanced.
What is compound?A chemical compound is referred to as a substance made up of several similar molecules linked together with chemical bonds and containing atoms from multiple elements. A molecule made up of only one element's atoms is hence not a compound.
What is charge?It gains charge when electrons are transferred between each other. When the count of protons is higher than the count of electrons, the charge is positive.
Ca has 1 charge and Kr has also 1 charge. hence, CaKr will form as a compound. The charge of \(Na_{2}S, BaCl_{3}\) and MgF is not balanced that's why they can not form compound.
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Nitrogen is a critical component of what organic compounds?
a.) lipids and carbohydrates
b.) lipids and DNA
c.) proteins and carbohydrates
d.) proteins and DNA
Answers
Answer:
D
Explanation:
Nitrogen is a naturally occurring element that is essential for growth and reproduction in both plants and animals. It is found in amino acids that make up proteins, in nucleic acids, that comprise the hereditary material and life's blueprint for all cells, and in many other organic and inorganic compounds.
Nitrogen is a critical component of proteins, which are building blocks and DNA, which are the main genetic material of our body.
What are organic compound?Those compounds which are formed by the combination of carbon, hydrogen, oxygen and nitrogen through covalent bonds are known as organic compounds.
Proteins are the large macromolecules which are present in the human body, formed by the combination of large no. of amino acids and main constituent of this acids is nitrogen. Similarly, DNA is the main genetic material in our body formed by the combination of nucleic acid and its main component is also nitrogen.
Hence, Nitrogen is a critical component of proteins and DNA.
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Earth's magnetic reversals are recorded in
A. the asthenosphere
B. sea-floor rock
C. deep-ocean trenches
D. the mantle
Answers
"Asbestos needs to be removed, whether or not it will be
disturbed.
True or False"
Answers
False, Asbestos is a naturally occurring mineral fiber that was commonly used in various industries due to its heat resistance, strength, and insulating properties.
Asbestos does not necessarily need to be removed if it will not be disturbed or pose a risk to human health. Asbestos-containing materials that are in good condition and undisturbed are generally considered safe. However, if asbestos-containing materials are damaged, deteriorating, or will be disturbed during renovation or demolition activities, it is necessary to take appropriate precautions, which may include professional removal or encapsulation, to prevent the release of asbestos fibers into the air. The decision to remove asbestos should be based on an assessment of its condition, potential for disturbance, and adherence to local regulations and guidelines.
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equal volumes of 0.1 m agno3(aq) and 2.0 m nh3(aq) are mixed and the reactions represented above occur. which ag species will have the highest concentration in the equilibrium system shown below, and why?
Answers
The reaction between AgNO3 and NH3 has the following chemical equation for balance: Ag(NH3)2+ + NO3- from AgNO3 + 2NH3. As a result, the silver-ammonia complex will contain the majority of the silver ions in the equilibrium system.
AgNO3, or silver nitrate, is a chemical that is frequently utilised in a variety of industries, including photography, medicine, and scientific research. It is a white, crystalline solid that dissociates into silver ions and nitrate ions in water. It is also extremely soluble in water. Halide ions in solution are frequently detected using the reagent AgNO3, which reacts with them to produce visually identifiable insoluble silver halides. Additionally employed as an antiseptic in medicine, AgNO3 is applied topically to treat skin diseases including warts and burns. It is also a typical precursor for the creation of additional silver compounds.
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Answer:
Ag(NH3)2+ (aq)
Explanation:
Because Kep3 will equal 1.6 x 10^7
Which of the following is an intensive property of matter?
Answers
Answer:
Some examples of intensive properties are color, taste, and melting point.
HOPE IT HELPS
According to the research, intensive properties are those that do not depend on the amount of material in a body such as density and pressure.
What are intensive properties ?These are those qualities whose characteristics are not related to the size of the system or the existing quantity of the matter in question.
Thus, density, pressure, melting point, temperature, color, boiling point, and speed are some of the intensive properties.
Therefore, we can conclude that according to the research, intensive properties are those that do not depend on the amount of material in a body such as density, boiling point and pressure.
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What is Decomposition Reaction
Answers
Answer:
Explanation:
Decomposition reaction, also known as analysis or dissociation, is a type of chemical reaction in which a compound breaks down into simpler substances or elements. In this reaction, a single reactant undergoes a chemical change and produces two or more products.
The decomposition reaction can be represented by the general equation:
AB → A + B
Where AB is the reactant, and A and B are the products. The reactant AB is usually a compound, and it breaks down into its constituent elements or simpler compounds.
There are different types of decomposition reactions, including:
Thermal decomposition: It occurs when a compound is heated, resulting in its decomposition into simpler substances. For example, the thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2):
CaCO3 → CaO + CO2
Electrolytic decomposition: It takes place when an electric current is passed through an electrolyte, causing it to break down into its component ions. For instance, the electrolysis of water (H2O) leads to the decomposition into hydrogen gas (H2) and oxygen gas (O2):
2H2O → 2H2 + O2
Photochemical decomposition: It occurs when a compound undergoes decomposition due to exposure to light energy. Chlorine gas (Cl2) can decompose into chlorine atoms (Cl) under the influence of light:
Cl2 → 2Cl
These are just a few examples of decomposition reactions. They are important in various chemical processes and are used in industries, laboratory experiments, and natural phenomena. By understanding and controlling decomposition reactions, scientists can gain insights into the behavior of different compounds and develop practical applications in fields such as chemistry, materials science, and environmental science.
Answer:
Explanation:
reaction in which a compound breaks down into simpler substances or elements
why are alloys formed
Answers
Explanation:
Alloy are formed because
They are rust freeThey are more attractiveAnswer:
They can be made harder by adding another element to the pure metal, so forming an alloy. This explains why an alloy often has more uses than the pure elements it is made from. Pure iron, for example, is very soft. ... Steels are examples of alloys.
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