Answer:
Answer in explanation
Explanation:
The question asks to write the equilibrium constant expression for the equation. This can be written by placing each of the products in square brackets and raise them to their number of moles, divided by the reactants each raised too, based on number of moles.
The square brackets represent the concentration of the compounds. We write the equilibrium constant expression as follows:
Kc = [H2O]^3[W]/[H2]^3[WO3]
For the equilibrium constant in terms of pressure, we use only the reactants and products that are gaseous.
Kp = [H2O]^3/[H2]^3
Answer:
≈ 708
Explanation
Here we have equation as:
4 Al + 3 O₂ → 2 Al₂O₃
As we know:
No of moles = Mass/ Molar mass
Here, Mass is 375 g and Molar mass is 27 gms, so no. of moles of Al will be:
=375 g /27 g/mol
= 13.889 mol
About mole ratio, we can see that for 4 moles of Al , 2 moles of Al2O3 are formed, so for 13.889 moles of Al, 13.889 mol ÷ 2 =6.944 moles of Al₂O₃ will be formed.
As we know:
Mass= No of moles/Molar mass
Mass of Al₂O₃ = 6.944 mol × 102 g/mol
= 708.288 g
Hope it helps!
Answer: 
Explanation:
Neutralization is a chemical reaction in which acid and base combine to form salt and water. Acids donate 
ions and bases donate 
ions in water which combine to form water molecules.
The balanced molecular equation is ;
Solved: An Unknown Element Contains 35 Protons, 36 Electro... | ...
Answer 1) It is incorrect.
Explanation : For the statement;
Thomson did experiments with cathode ray tubes to show that all atoms contain tiny negatively charged subatomic particles called as electrons<span>.
So the statement should be like this:
AFTER the </span><span>Thomson’s experiments, scientists accepted that the atom was made up of smaller particles.
Answer 2) This is correct.
Explanation : Rutherford was the scientist who discovered that atoms has volume is because of the empty spaces inside it. He did the gold foil experiments to prove this and he was successful in doing this by concluding that tiny dense empty places are occupied by positively charged nucleus.
Answer 3) This is Correct.
Explanation : After Thomson and Rutherford, Millikan also performed an experiment to prove that an atom contains a small positively charged nucleus which is usually surrounded by negatively charged electrons by his oil drop experiment.</span>
