Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical equation.
1 answer:
Answer:
Explanation:
Neutralization is a chemical reaction where an acid reacts with a base to form salt and water.
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.
The balanced chemical equation will be:
Thus the reactants are calcium hydroxide and hydrochloric acid
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Answer:
Approximately .
Explanation:
Note that both figures in the question come with four significant figures. Therefore, the answer should also be rounded to four significant figures. Intermediate results should have more significant figures than that.
<h3>Formula mass of strontium hydroxide</h3>Look up the relative atomic mass of ,
, and
on a modern periodic table. Keep at least four significant figures in each of these atomic mass data.
:
.
:
.
:
.
Calculate the formula mass of :
.
means that each mole of
formula units have a mass of
.
The question states that there are of
in this solution.
How many moles of formula units would that be?
.
There are of
formula units in this
solution. Convert the unit of volume to liter:
.
The molarity of a solution measures its molar concentration. For this solution:
.
(Rounded to four significant figures.)
Answer:
Option A (0.043 g) is the correct answer.
Explanation:
Given:
= 43 mg
As we know,
then,
⇒
Thus, the above is the correct alternative.