C: 1.5 moles (NH4)3PO4
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For which molecules are the empirical and molecular formulae the same? 1. methanoic acid, HCO2H 2. ethanoic acid, CH3…
A 10 cm³ sample of a gaseous hydrocarbon is completely burnt in oxygen. The total volume of the products is 70 cm³. A…
Which statement most clearly indicates that diamond and graphite are forms of carbon?
Four substances have the following electrical properties. What are these four substances?
The proton number of element X is 6. The proton number of element Y is 9. What is the formula of a compound of these …
Which ion reacts with aqueous ammonia to give a precipitate that dissolves in an excess of ammonia?