Answer:
Solar Power, HEP (Hydroelectric Power), Wind Power, etc...
Explanation:
These are some common examples of renewable energy source.
Answer:
The answer to your question is the letter D. a decomposition reaction
Explanation:
This is a brief description of the main chemical reactions.
a) A synthesis reaction is when two reactants are combined to form only one product.
b) A disynthesis reaction. I have not heard about this chemical reaction, I think it does not exist.
c) A combustion reaction is when an organic molecule reacts with oxygen to form carbon dioxide and water.
d) A decomposition reaction is when one reactant splits to form two or more products.
Answer:
6.82g
0.59moles
Explanation:
1. What is the mass sample of 0.0500 moles of zinc chloride ?
Given parameters:
Number of moles ZnCl₂ = 0.05moles
Unknown:
Mass of the sample = ?
Solution:
To find the mass of a substance using the number of moles, it would be pertinent to understand what mole is.
A mole is a substance that contains the avogadro's number of particles.
It relates to the mass using the expression below;
Mass of a substance = number of moles x molar mass
Molar mass of ZnCl₂;
Atomic mass of Zn = 65.4g/mol
Cl = 35.5g/mol
Molar mass = 65.4 + 2(35.5) = 136.4g/mole
Mass of a substance = 0.05 x 136.4 = 6.82g
2. How many moles of potassium sulfide are in a 65.50g sample?
Given parameters:
Mass of K₂S = 65.5g
Unknown:
Number of moles = ?
Solution:
The number of moles of any substance is related to mass using the expression below;
Number of moles = 
Molar mass of K₂S = 2(39) + 32 = 110g/mol
Number of moles =
= 0.59moles
Answer:
4 atmospheric pressure is needed to get a volume of 25 litres
Answer:
Definitely add more points
Explanation:
I'm saying this because this is worth way more points