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Chemistry

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Art Kshlerin

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Cards in this guide (12)
The subscripts of a compound indicate

the ratio of elements

The ideal gas law measures pressure in

atmospheres A+

Laboratory data indicates a compound is composed of 43.3 percent sodium 11.3 percent carbon and 45.3 percent oxygen How many grams of each element could be presumed to be present

43.3 g Na, 11.3 g C and 45.3 g O

A multiple of an empirical formula is often called what

Molecular Formula

Choose the empirical formula

A+..... All Of Those

Type the capital letter that represents this equation after it has been correctly balanced Press Enter

3MgCl2...

When determining empirical formulas from laboratory data the mole ratio is used to determine what

subscripts

Which is the correct set of coefficients for the equation below na2cr2o7 plus alpo4 na3po4 plus al2cr2o73

3, 2, 2, 1

Copper will react with silver nitrate to form copper nitrate and silver From this reaction 127.1 grams of copper will produce how many grams of silver

431.5 grams

A compound found to contain 75.7 arsenic and 24.3 oxygen would have which of the empirical formulas below

As2O3

The formula for methane is CH4. Four moles of methane would have a mass of how many grams

Four moles of methane would have a mass of 64,12 grams.

The formula for ethyl alcohol is C2H5OH. The mass of 2 moles of ethyl alcohol would be how many grams

The mass of 2 moles of ethyl alcohol would be 92,14 grams.

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