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Chemistry

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Stefanie Little

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Cards in this guide (13)
The subscripts of a compound indicate

the ratio of elements

Sodium will react with oxygen to form sodium oxide Use the formula below to determine how many grams of sodium oxide will be formed if 46 grams of sodium are used in the reaction

62 grams a+

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

Subtracting four from the period number of an inner-transition metal will indicate the number of shells

false

Choose the empirical formula

A+..... All Of Those

An unknown sample with a molecular mass of 180.0g is analyzed to yield 40 percent C 6.7 percent H and 53.3 percent O What is the empirical formula and the molecular formula of this compound

ch2o and c6h12o6

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

Using the periodic chart indicate the most common charge of magnesium

1

Calculate the empirical formula of a compound formed from 3 percent C 0.3 percent H and 96.7 percent you Which formula below correctly represents the empirical formula

Chi a+

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

As2O3

Use the electronegativity chart to determine the type of bond that will form between this pair of elements.

Use the electronegativity chart to determine the type of bond that will form between this pair of elements.

N + N

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