To balance a chemical equation, place coefficient as needed in front of the symbols or formulas of the elements. So the same number of each type of atom occurs in both reactants and products.
Steps to be followed are-
(1) Write down the chemical reaction in the form of word equation, keeping all the reactants on left hand side and keeping products on right hand side.
(2) Write all the symbol and formula of all reactants and products in word equation.
(3) Balance the whole equation by multiplying the symbols and formula by smallest possible figures.
Same number of each and every atom, of same type occurs in both reactants and products.
Once all the individual elements are balanced, then the total number of atoms of each element on the reactant and product side are compared once again after balancing. If there are no inequalities, the chemical equation is said to be balanced.
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Answer:
a. .250 moles
Explanation:
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In this case, since we can see how the hydrogen is given off as a product of the reaction and we can model its behavior via the ideal gas equation, it is possible for us to use such equation for the determination of the collected moles:
Next, since the STP conditions account for a pressure of 1 atm and a temperature of 273 K, the moles turn out to be:
Thus the answer is a. .250 moles
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Gymnosperm seeds develop either on the surface of scales or leaves, which are often modified to form cones, or solitary as in yew, Torreya, Ginkgo.
Theoretical yield:
02 -> H2O
1mol -> 2mol
2mol -> 4mol
32g -> 72g
Theoretical yield = 72g
Percent yield = actual yield/theoretical yield * 100
= 33.1/72 *100
=45.97%