The formula that only shows the ratio of one atom to another is called the empirical formula.
Answer:
I think carbon and hydrogen
<span>I believe its, the federal principle or system of government. Hope this can help!! >-<</span>
<span>On the periodic table, the majority of elements are classified as "Metals"
In short, Your Answer would be Option A
Hope this helps!</span>
Moles of phosphoric acid would be needed : 0.833
<h3>Further explanation</h3>
Given
15 grams of water
Required
moles of phosphoric acid
Solution
Reaction(decomposition) :
H3PO4 -> H2O + HPO3
mol water (H2O :
= mass : MW
= 15 g : 18 g/mol
= 0.833
From the equation, mol ratio H3PO4 = mol H2O = 1 : 1, so mol H3PO4 = 0.833
