6.023*10^23 of any given particle, be it an atom or a molecule.
Answer:
Q>> K
the reaction will proceed to the left
Explanation:
Step 1: Data given
K = 0.154
Number moles CH4 = 6.70 moles
Number of moles C2H2 = 4.05 moles
Number of moles H2 = 10.05 moles
Volume = 5.20 L
Step 2: Calculate concentration of CH4
Concentration = moles / volume
[CH4] = 6.70 mol / 5.20 L = 1.29 M
Step 3: Calculate concentration C2H2
[C2H2] = 4.05 mol / 5.20 L = 0.779 M
Step 3: Calculate concentration H2
[H2] = 10.05 mol / 5.20 L = 1.93 M
Q = [C2H2] [H2]³ / [CH4]²
Q = 0.779 ( 1.93)³ / ( 1.29)² = 3.37 >> K
Q>> K
the reaction will proceed to the left
A reaction that is spontaneous will always happen. Option D is right.
Explanation:
When certain conditions for reactions are fulfilled the reaction that occurs without any outside intervention with the formation of product is called as spontaneous reaction.
In spontaneous reaction the product is of lesser energy than reactants.
The spontaneous reaction leads to increase in entropy. If the entropy of the system and surrounding is positive the reaction is spontaneous.
During phase change as solid to liquid causes molecules to be disordered and increase in the movement causes increase disorder hence increase in entropy and a spontaneous reaction.
In chemical reactions if on mixing the substances heat is released thus entropy increases. The spontaneous reaction can also occur even if entropy decreases.
The reaction is not spontaneous if Gibb's free energy is negative.
Answer:
Explanation:
Mallabone’s tests suggest there’s no risk the jacket liner will explode or heat up so much that it risks causing burns. The reaction also doesn’t produce acidic byproducts. And because calcium oxide doesn’t react with humidity (water vapor in the air), the liners can be stored for long periods and still work when needed.
Calcium oxide: A substance that gives off heat as it chemically reacts with water. Its chemical formula is CaO (which means each molecule is made up of one calcium atom and one oxygen atom).
Exothermic reaction: A chemical reaction that generates heat as it proceeds. (In Greek, “exo” means outside and “therm” means heat.)
Thought this might help ;)
Answer:
12.5 g of Li are needed in order toproduce 0.60 moles of Li₃N
Explanation:
The reaction is:
6Li(s) + N₂(g) → 2Li₃N(s)
If nitrogen is in excess, the lithium is the limiting reactant.
Ratio is 2:6
2 moles of nitride were produced by 6 moles of Li
Then, 0.6 moles of nitride were produced by (0.6 .6)/ 2 = 1.8 moles of Li
Let's convert the moles to mass → 1.8 mol . 6.94 g/ 1mol = 12.5 g of Li