The relative formula mass of the group 2 carbonate W is 41 g/mol.
How to determine relative formula mass?Assuming that the gas produced is measured at standard temperature and pressure (STP), which is 0°C and 1 atmosphere pressure, the volume of one mole of gas is 22.4 dm³.
So if 1 mole of Group 2 carbonate W produces 24 dm³ of gas at STP, then the molar volume of the gas produced is:
24 dm³ / 22.4 dm³/mol = 1.07 mol
This means that one mole of Group 2 carbonate W produces 1.07 moles of gas. Since the gas is most likely carbon dioxide (CO₂) which has a formula mass of 44 g/mol, the relative formula mass of Group 2 carbonate W can be calculated as:
Relative formula mass = Mass of 1 mole of CO₂ / 1.07
Relative formula mass = 44 g/mol / 1.07
Relative formula mass ≈ 41 g/mol
Therefore, the relative formula mass of the Group 2 carbonate W is approximately 41 g/mol.
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The complete question is:
24 dm3 of gas is produced when one mole of a Group 2 carbonate is heated.
Determine the relative formula mass of the Group 2 carbonate W.
Use the graph above.
What would be the effect on this reaction of increasing the temperature?
2H2 + O2 = 2H20 + energy
A) the rate of formation of H2O would increase
B) The forward reaction would be favored
C) Increasing the temperature would not have an effect on this reaction
D) The rate of the forward reaction would decrease
Answer:
D) The rate of the forward reaction would decrease
Explanation:
The statement that describes effect on the reaction of increasing the temperature is "the rate of the forward reaction would decrease."
What is temperature?Temperature is the measurement of a body's level of hotness or coolness.
The average kinetic energy of the system is measured by temperature. The kinetic energy of particles in a matter raises as they move faster, which boosts the temperature of the system. When two bodies of differing temperatures come into touch, heat is the energy exchanged between them.
The term "exothermic reaction" refers to a reaction that releases energy. An exothermic reaction, in other words, produces heat. The temperature of the reaction will rise unless it is cooled in some way. When you use an external heater to raise the temperature, it slows or reverses the reaction, reducing the number of products while increasing the amount of reactants.
Hence the correct answer is D.
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The concentration of ionic substances is important for the heart to beat. your heart responds to electrical impulses that travel through heart cells that are made up mostly of water. which properties of ionic compounds are important to support this function? solubility in water conductivity crystalline melting point
The property of ionic compounds that is important to support the function in the circulatory system is conductivity.
What is conductivity?Conductivity is the ability of a material to conduct electricity or heat.
According to this question, the concentration of ionic substances is important for the heart to beat because our heart responds to electrical impulses that travel through heart cells that are made up mostly of water.
Ionic substances are known to have the ability to conduct electrical charges, hence, conductivity is an inspiration property of ionic compound that supports this function.
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2HgO O2 + 2Hg
If 50.0 grams of mercury (II) oxide are fully decomposed, how many grams of oxygen will be produced?
Answer:
33.5 grams of oxygen will be produced
Explanation:
FOR THE LOVE OF GOD SOMEONE PLEASE HELP ME
WHAT IS THE OXIDATION NUMBER OF THE S IN SO^-2 ???
Answer:
The oxidation number for sulfur in SO2 is +4.
Explanation:
To find the oxidation number of sulfur, it is simply a matter of using the formula SO2 and writing the oxidation numbers as S = (x) and O2 = 2(-2) = -4. Using the rule and adding the oxidation numbers in the compound, the equation becomes x +(-4 ) = 0. Solving for x, it is evident that the oxidation number for sulfur is +4.
Calculate the volume of water which was produced when 1120 cm cubics of oxygen at s.t.p was liberated during the decomposition of hydrogen peroxide
Volume of H₂O produced = (1.8 g) × (1 cm³/g) = 1.8 cm³
Simplifying :
Molar volume of O₂ at STP = 22400 cm³/mol
No. of moles of O₂ liberated = (1120 cm³) / (22400 cm³/mol) = 0.05 mol
According to the given equation, mole ratio H₂O : O₂ = 2 : 1
No. of moles of H₂O produced = (0.05 mol) × 2 = 0.1 mol
Molar mass of H₂O = (1×2 + 16) g/mol = 18 g/mol
Mass of H₂O produced = (0.1 mol) × (18 g/mol) = 1.8 g
Volume of H₂O produced = (1.8 g) × (1 cm³/g) = 1.8 cm³
What happens in the decomposition of hydrogen peroxide?
The decomposition of hydrogen peroxide can be summarized by the chemical equation: which states that two molecules of hydrogen peroxide break down to form two molecules of water and one molecule of oxygen gas, along with heat energy.
Why does hydrogen peroxide decompose quickly?
In many living organisms hydrogen peroxide is a product of metabolism that must be broken down, since in appreciable concentrations it is toxic. The rate of decomposition is increased by the intra-cellular enzyme catalase.
At what temperature does hydrogen peroxide decompose?
Properties. The boiling point of H 2O 2 has been extrapolated as being 150.2 °C (302.4 °F), approximately 50 °C (90 °F) higher than water. In practice, hydrogen peroxide will undergo potentially explosive thermal decomposition if heated to this temperature
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if the gas is air with a fixed mass m of 1 kg, a pressure p of 20 atm, and a temperature t of 600 k; calculate the work done by expanding the gas in the cylinder to a pressure of 1 atm. assume the expansion to be reversible and adiabatic. perform the calculation directly by integrating compare this value of work to the change in internal energy of the gas and to the change in enthalpy of the gas. comment. if the temperature is raised to 1200 k before the expansion begins, determine the work of expansion if the initial pressure is unchanged. compare this result to the result from part a. repeat the calculations in parts a-c using argon as the working fluid. explain what gas property leads to a different result.
To calculate the work done by expanding the gas in the cylinder, we can use the formula for reversible adiabatic expansion:
Work = (p1V1 - p2V2) / (γ - 1),
where p1 and p2 are the initial and final pressures, V1 and V2 are the initial and final volumes, and γ is the specific heat ratio.
In this case, the initial pressure is 20 atm and the final pressure is 1 atm. Assuming the volume changes, we need more information to proceed with the calculation. However, we can make some comments.
The change in internal energy (ΔU) of the gas is given by the formula
ΔU = Q - W,
where Q is the heat added to the system and W is the work done on the system. Since the expansion is adiabatic (no heat exchange),
ΔU = -W.
The change in enthalpy (ΔH) of the gas is given by the formula
ΔH = ΔU + Δ(PV).
For an adiabatic process,
Δ(PV) = 0,
so ΔH = ΔU.
If the temperature is raised to 1200 K before the expansion begins, the initial conditions change. To determine the work of expansion, we need more information about the volume changes.
When repeating the calculations using argon as the working fluid, the specific heat ratio (γ) changes.
Argon has a different γ value compared to air, which leads to a different result.
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Describe the direction of energy as endothermic or exothermic as water undergoes a phase change to steam. Justify your reasoning
As water undergoes a phase change to steam.
The first phase) Liquid water.
Final phase) Steam water.
The direction of the energy is from the surroundings to the system that contains the liquid water. We can say this is endothermic, the system needs the energy to produce the process. The flow of the energy goes from the outside to the inside.
During the hot summer days, there is a lot more water in the air. This is due to which change of state?
(A) Condensation
(B) Evaporation
(C) Sublimation
(D) Freezing
Thank you for helping! <3
Answer:
The answer is B. Evaperation
If a 2kg bird is pushed by the wind with a force of 2N, how fast does the
bird accelerate?
O 1m
O 2 m/s2
O 4m/s2
O 1 m/s2
The bird will accelerate with an acceleration of 1 m/s². Therefore, option (4) is correct.
What is acceleration?Acceleration of a body can be explained as the change of velocity of a body with respect to time. The acceleration of a body is a vector parameter with both magnitude and direction. Acceleration can be defined as the 2nd derivative of position with respect to time.
According to Newton's 2nd law of motion, force is the product of the mass and acceleration of an object.
F = ma
And, a = F/m
Therefore, the acceleration and mass of a body have an inverse relationship.
Given, the force acting on the bird, F = 2 N
Given the mass of the bird, m = 2Kg
The acceleration in the speed of the bird can be calculated as:
a = F/m
a = 2N/2 Kg
a = 1 m/s²
Therefore, the bird accelerates at 1 m/s² because of the wind.
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Which of the following are conjugate acid/base pairs? Select all that apply. H2PO 4−and HPO4^2−H2CO3 and CO 3^2−
HCl and NaOH H3O + and OH − HCl and Cl−
A conjugate acid-base pair is the pair of two compounds which differ by the presence of a proton. An acid will donate protons to a base and become a conjugate base. A base will accept protons and become a conjugate acid.Conjugate acid/base pairs are as follows:H2PO4− and HPO42−H2CO3 and CO32−HCl and Cl−H3O+ and OH−Explanation:
H2PO4− and HPO42−H2PO4− can donate a proton to become HPO42− and the latter can accept a proton to become H2PO4−.H2CO3 and CO32−H2CO3 can donate a proton to become CO32− and the latter can accept a proton to become H2CO3.HCl and Cl−HCl can donate a proton to become Cl− and the latter can accept a proton to become HCl.H3O+ and OH−H3O+ can donate a proton to become OH− and the latter can accept a proton to become H3O+.Therefore, the following are conjugate acid/base pairs:H2PO4− and HPO42−H2CO3 and CO32−HCl and Cl−H3O+ and OH−
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i really need help im stuck
The specific heat of lead is 0.129 J/gC. Find the amount of heat released when 2.4 moles of lead are cooled from 37.2C to 22.5C.
Answer:
-943J or 943J released
Explanation:
m=2.4 mol x 207.g/ mol=497.3g
c=.129 J/gC
T= T f-Ti=(22.5-37.2)=-14.7C
Q=?
Q=(49.3g)(.129 J/g C) (-14.7 C)
= -943 J or 943 J released
What is happening to voltage-gated channels at this point in the action potential?.
Answer:What is happening to voltage-gated channels at this point in the action potential? Na+ channels are inactivating, and K+ channels are opening. Na+ channels are inactivating, and K+ channels are closing.
The Ostwald process is used commercially to produce nitric acid, which is, in turn, used in many modern chemical processes. In
the first step of the Ostwald process, ammonia is reacted with oxygen gas to produce nitric oxide and water.
What is the maximum mass of H₂O that can be produced by combining 78.3 g of each reactant?
4 NH3(g) + 5O₂(g) → 4 NO(g) + 6H₂O(g)
This makes the O2 the limiting reactant and the NH3 is present in excess since only 49.3 g of H2O can be produced.
What is Ostwald process?Nitric acid is produced chemically using the Ostwald process. The method was created by Wilhelm Ostwald, who patented it in 1902. The primary raw material for the most popular type of fertilizer manufacturing is provided by the Ostwald process, a mainstay of the contemporary chemical industry. Ammonia is transformed into nitric acid in two phases via the Ostwald process. Nitric oxide and nitrogen dioxide are produced by the oxidation of ammonia in step 1. The generated nitrogen dioxide is then absorbed in water in step 2. Nitric acid is the result of this.Therefore,
Once more, you must determine which reactant, if any, is limiting since they are giving you the masses of BOTH reactants.
produced from 73.0 g NH3 × 1 mol NH3/17 g × 6 mol H2O/4 mol NH3 × 18 g H2O/mol
Maximum quantity of H2O generated is 49.3 g at 73.0 g O2 × 1 mol O2/32 g × 6 mol H2O/5 mol O2 × 18 g H2O/mol.
This makes the O2 the limiting reactant and the NH3 is present in excess since only 49.3 g of H2O can be produced.
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The typical capacity for human lungs is approximately 5800 mL. At a temperature of 37C (average body tempurature) and pressure of 0.98 atm, how many moles of air do we carry inside our lungs?
Answer:
0.22 moles of air we carry inside our lungs.
Explanation:
An ideal gas is a theoretical gas that is considered to be composed of point particles that move randomly and do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.
The gas laws are a set of chemical and physical laws that allow determining the behavior of gases in a closed system. The parameters evaluated in these laws are pressure, volume, temperature and moles.
The ideal gas law is an equation that relates the variables pressure P, temperature T and volume V if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases as follows:
P * V = n * R * T
In this case:
P= 0.98 atmV= 5800 mL= 5.8 L (being 1,000 mL= 1 L)n= ?R= 0.082 \(\frac{atm*L}{mol*K}\)T= 37 C= 310 K (being 0 C= 273 K)Replacing:
0.98 atm* 5.8 L= n* 0.082 \(\frac{atm*L}{mol*K}\) * 310 K
Solving:
\(n=\frac{0.98 atm* 5.8 L}{0.082 \frac{atm*L}{mol*K} *310 K}\)
n= 0.22 moles
0.22 moles of air we carry inside our lungs.
PLEASE HELP ASAP!!!
A teacher wrote the following part of a chemical equation involving water (H2O) and carbon dioxide (CO2): H2O + CO2 ---> ?
What is the most likely result of the chemical reaction represented by this equation?
A. H2CO3
B. NaCl
C. HNO3
D. H2Ca3
Answer:
Id say A. I think I hope I'm right
Q. How do you understand by atomicity of elements? Explain giving examples.
Atomicity refers to the number of atoms present in a molecule of an element or compound. It indicates whether an element exists as individual atoms or as a group of atoms bonded together in a molecule.
Some elements exist as single atoms, known as monatomic elements. Examples include noble gases like helium (He), neon (Ne), and argon (Ar). These gases have stable electronic configurations and do not readily form bonds with other elements.
Other elements exist as diatomic molecules, meaning they are composed of two atoms bonded together. Examples of diatomic elements include hydrogen (H2), oxygen (O2), and nitrogen (N2). These elements form diatomic molecules due to their strong covalent bonds.
Additionally, some elements can exist as polyatomic molecules, meaning they are composed of three or more atoms bonded together. Examples include ozone (O3) and sulfuric acid (H2SO4). These elements form complex structures due to the sharing of electrons between multiple atoms.
Understanding the atomicity of elements is crucial in various chemical reactions and understanding their properties. It helps determine the stoichiometry of reactions, the formation of compounds, and the behavior of elements under different conditions.
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3. A compound contains 15.9% aluminum, 27.4% phosphorus, and 56.6% oxygen. Calculate the empirical formula.
\(AlP_2O_6\) is the empirical formula for the substance.
The simplest whole number ratio of atoms from each component element is the empirical formula for a compound. Find the moles of each element present in the compound so that we may derive the empirical formula. To do this, we need to convert the percentages of each element to the amount in moles.
First, convert the percentages of each element to grams. Since the percentages add up to 100%, we can use 100 grams as the total mass of the compound:
Aluminum: 15.9% × 100 g = 15.9 g
Phosphorus: 27.4% × 100 g = 27.4 g
Oxygen: 56.6% × 100 g = 56.6 g
Next, convert the mass of each element to moles by dividing by the molar mass of each element:
Aluminum: \(\frac{15.9 g }{ 26.98 g/mol }= 0.59 mol\)
Phosphorus: \(\frac{27.4 g }{30.97 g/mol} = 0.89 mol\)
Oxygen: \(\frac{56.6 g }{ 16.00 g/mol} = 3.53 mol\)
Now, divide each mole value by the smallest value (0.59 mol):
Aluminum : \(\frac{ 0.59 mol }{0.59 mol} = 1\)
Phosphorus: \(\frac{0.89 mol }{ 0.59 mol }= 1.5\)
Oxygen : \(\frac{ 3.53 mol}{ 0.59 mol} = 5.97\)
To get the simplest whole number ratio, we need to round each ratio to the nearest whole number.
Hence, the compound's empirical formula is \(AlP_2O_6\).
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Hitungkan jisim bagi :
(a) 1.204 x 1020 atom kalium, K.
Explanation:
jawapannya ada dalam foto di atas
If you had a racemic mixture of the two enantiomers mentioned in Part A, what would you expect the specific rotation to be for this mixture and WHY
If a racemic mixture of two enantiomers is given, the specific rotation will be zero.
A racemic mixture contains equal amounts of both enantiomers, which have opposite signs of rotation. Therefore, the rotations of the individual enantiomers cancel each other out, resulting in a net rotation of zero.Specific rotation is a measure of the degree of rotation of the plane of polarized light by a chiral substance.
Chiral compounds rotate plane-polarized light in either a clockwise or counterclockwise direction, depending on the orientation of their asymmetric carbon atoms.
Since a racemic mixture contains equal amounts of both enantiomers, it will not rotate the plane of polarized light because the rotations of the individual enantiomers will cancel each other out.
This is because the polarized light will experience the same amount of rotation in the clockwise and counterclockwise directions, leading to a net rotation of zero. Hence, the specific rotation of a racemic mixture is zero.
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What happens when a virus becomes latent?
Answer:
the full viral genome is retained in the host cell, but its expression is dramatically restricted, such that few viral antigens and no viral particles are produced.
Explanation:
what is The chemistry of living things and living systems created a new
combined field in science
Answer:
The answer is biochemistry
Explanation:
Biochemistry is a field of science that studies the chemistry and chemical processes involved in a living system. These chemical processes include glycolysis, gluconeogenesis, citric acid cycle, pentose phosphate pathway among others. Biochemistry studies the relatedness of these processes, the importance of these processes and how these processes can or cannot be regulated.
What is the responding variable in this experiment?
A. The number of crickets in each container
B. The kind of containers used
C. The number of cricket chirps
D. The temperature of each container
Answer:
B
Explanation:
the explanation is that It's the effect or outcome in an experiment. The changes in an experiment are made to the independent variable
Read and find the mechanism by which the following enzymes (more than two substrates) work?! 1. Glyceraldehyde-3-phosphate dehydrogenase D-glyceraldehyde-3-phosphate + NAD+ + P; 3-phospho-D-glycerol phosphate + NADPH + 2. Glutamate dehydrogenase 2-ketoglutarate + NH4+ + NAD(P)H L-glutamate + NAD(P)* + H2O 3. Isocitrate dehydrogenase 2-ketoglutarate + CO2 + NADH isocitrate + NAD+
These are simplified explanations of the mechanisms involved in these enzyme-catalyzed reactions, highlighting the key steps and substrate interactions.
Glyceraldehyde-3-phosphate dehydrogenase:
The mechanism of Glyceraldehyde-3-phosphate dehydrogenase involves multiple substrates. Here's a step-by-step explanation:
D-glyceraldehyde-3-phosphate, NAD+, and P bind to the active site of the enzyme.
The enzyme catalyzes the oxidation of D-glyceraldehyde-3-phosphate by transferring a hydride ion (H-) from D-glyceraldehyde-3-phosphate to NAD+, forming NADH.
The P (inorganic phosphate) binds to the carbonyl group of the oxidized D-glyceraldehyde-3-phosphate, resulting in the formation of 3-phospho-D-glycerol phosphate.
NADH and 3-phospho-D-glycerol phosphate are released from the active site of the enzyme.
Glutamate dehydrogenase:
The mechanism of Glutamate dehydrogenase also involves multiple substrates. Here's a step-by-step explanation:
2-ketoglutarate, NH4+, and NAD(P)H bind to the active site of the enzyme.
The enzyme catalyzes the oxidative deamination of 2-ketoglutarate by transferring an amine group (NH3) from 2-ketoglutarate to NAD(P)H, forming NAD(P)+ and L-glutamate.
H2O is added to the amine group of the intermediate L-glutamate, resulting in the formation of L-glutamate as the final product.
NAD(P)+ and H2O are released from the active site of the enzyme.
Isocitrate dehydrogenase:
The mechanism of Isocitrate dehydrogenase also involves multiple substrates. Here's a step-by-step explanation:
2-ketoglutarate, CO2, and NADH bind to the active site of the enzyme.
The enzyme catalyzes the oxidative decarboxylation of 2-ketoglutarate by removing a carboxyl group (CO2) from 2-ketoglutarate, resulting in the formation of isocitrate and NAD+.
NAD+ is reduced to NADH during this step.
Isocitrate is converted into an intermediate that undergoes isomerization, forming α-ketoglutarate.
NADH and α-ketoglutarate are released from the active site of the enzyme.
These are simplified explanations of the mechanisms involved in these enzyme-catalyzed reactions, highlighting the key steps and substrate interactions. The actual mechanisms may involve additional intermediate steps and cofactors.
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Who is the first to write an atomic theory based upon experimentation?
Answer:
John Dalton
John Dalton, an English chemist and meteorologist, is credited with the first modern atomic theory based on his experiments with atmospheric gases.
Question 1 (1 point)
A new element has been discovered at Archer High School. The element symbol is Zz
and it has 2 naturally occurring isotopes.
The first isotope has a mass of 85.96 amu and a percent abundance of 87.20%.
The second isotope has a mass of 86.78 amu.
What is the average atomic mass of element Zz? Round to the hundredth's place
(0.01 or 2 decimal places).
Your Answer:
Answer
units
Answer:
86.06 amu is the average atomic mass of element Zz.
Explanation:
We may find the average atomic mass of Zz with a simple thought experiment. Let's imagine that we were given 100.0 grams of Zz. We know that 87.20% of that 100.0 grams is an isotope having 85.96 AMU (atomic mass units). That means the other 12.80% must be the isotope with 86.78 AMU.
Since we picked 100.0 grams, it is easy to see that we would have:
87.2 grams of 85.96 AMU, and
12.8 grams of 86.78 AMU
-----------
100.0 grams total
The contribution of each isotope can be calculated by taking it's percent abundance times it's AMU andf then adding the total results:
AMU % Contribution to total AMU
85.96 87.2 74.96
86.78 12.8 11.11
-------- --------- -----------
100.0 86.06 amu
The sum of the two weighted averaged amu numbers is the average atomic mass of element Zz. [Element Zz has a good futire as a sleep aid.]
A Fine grained texture and a Coarse grained texture.
B. How is each texture related to the cooling rate?
Please helppp!
Explanation:
Slow cool rate in coarse
Fast cool rate in fine
A gold ring cannot be broken down into any other ubtance. What kind of ubtance i gold?
Element. An element is a pure material with only one type of atom that is incapable of being physically or chemically divided into two or more simpler compounds.
As a result, when gold is broken down, gold is still the result. It is a constituent. It is a thick, soft, malleable, ductile, brilliant, somewhat orange-yellow metal in its purest form. Gold belongs to the group 11 family of elements and is a transition metal. It is one of the least reactive chemical elements and, under normal circumstances, is solid. A specific element cannot be broken down into simpler compounds at the atomic level by normal physical or chemical processes. Oxygen, carbon, helium, mercury, copper, and gold are a few examples of elements that you could be familiar with.
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Titanium (Ti, #22) atoms bond with Oxygen (O, #8) atoms. What type of bond will hold them together? (1 pt)
*
1 point
ionic
covalent
metal
intermolecular (hydrogen, dipole, etc.)
Titanium (Ti,) atoms bond with Oxygen (O,) atoms. covalent type of bond hold them together.
What is covalent bond?An electron exchange that results in the formation of electron pairs between atoms is known as a covalent bond.
When atoms share electrons, a permanent equilibrium of the attractive and repulsive forces between them is known as covalent bonding.
These electron pairs are referred to as shared pairs or bonding pairs.
Thus ,Titanium (Ti,) atoms bond with Oxygen (O,) atoms. covalent type of bond hold them together.
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Help please !!!! I’ll give brainliest !!!!
Answer:
2x+nm^3
Explanation: