Generate Quiz 6A91D8F79A2E4

The simplest, most simplified ratio of the various atom types in a chemical compound is expressed by the empirical formula. The ratios are always in the smallest whole numbers and give information about the relative numbers of each type of atom present.

6.02×1023 is the number of molecules in Avogrado.

The volume of one mole of an ideal gas at Standard Temperature and Pressure (STP) is 22.4 dm3.

One mole of an ideal gas takes up 24 dm3 at room temperature and normal pressure (NTP).

Moles of Calcium = 3

Calcium (Ca) molar mass = 40

What is the mass of calcium in grams?

Moles = Mass/Molar mass

Mass = Moles × Molar mass

3 x 40 = a total of 120 of mass

There are 14 g of nitrogen and 16 g of oxygen in total. We obtain 2 by dividing the mass of nitrogen in the compound (28g) by 14g. Five is obtained by dividing the mass of oxygen in the compound (80g) by 16g. Thus, we can state that the formula is N2O5 since the molar ratio of N to O is 2:5.

Silver nitrate is broken down to produce silver, nitrogen dioxide, and oxygen gas. The balanced chemical equation for silver nitrate’s breakdown is as follows:

2AgNO3 → 2Ag + 2NO2 + O2

We obtain from a balanced chemical equation:

Two moles of Ag are produced from two moles of lunar caustic (AgNO3).

Thus, 0.5 moles of Ag will be produced from 0.5 moles of lunar caustic.

Mass/molar mass = moles

mass = molar mass * moles

0.5 * 107.8 = mass

mass = 53.9 or 54 g.

It’s true. Copper (Cu) has a relative atomic mass of roughly 63.546.