Which is an empirical formula

CH4 + 2 O2 --> CO2 + 2 H2O. How many moles of oxygen are needed to completely react with 3 moles of CH4.

What is the gram formula mass of K2CO3.

In which type of reaction does a compound break down into 2 or more elements or simpler compounds

What is the empirical formula of the compound whose molecular formula is P4O10?

What is the percent by mass of oxygen in magnesium oxide, MgO?

A compound is 86% carbon and 14% hydrogen by mass. What is the empirical formula for this compound?

What is the percent by mass of water in the hydrate Na2CO3 * 10H2O (formula mass = 286)?

What is the total number of oxygen atoms in the formula MgSO4 * 7 H2O?

What quantity is equivalent to 39 g of LiF

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