How Many Moles of Atoms Are in Each Elemental Sample

How many moles are in a gas in 890mL at 21 C and 750 mmHg. How many moles of CO_2 g are in a 56 L sample of CO_2 measured at STP.

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. Find the empirical formula of a compound with a sample mass of 10150 g which is known to contain only phosphorus and oxygen and has a phosphorus content of 4433 g. Calculate the moles of each element and divide each value by the smallest number within the values. You have to change the atoms that come before left of arrow- ex H2 and O2 2 H2 O2 -- 2H2O 4 hydrogen atoms- 4 hydrogen atoms 2 oxygen atoms-2 oxygen atoms now the reaction is balanced.

2 hydrogen atoms- 2 hydrogen atoms 2 oxygen atoms - 1 oxygen atom this equation is not balanced.

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