Mercury(ii) oxide (hgo) decomposes to form mercury (hg) and oxygen (o2). the balanced chemical equation is shown below. 2hgo mc020-1.jpg 2hg + o2 the molar mass of hgo is 216.59 g/mol. the molar mass of o2 is 32.00 g/mol. how many moles of hgo are needed to produce 250.0 g of o2?

moles of HgO needed to produce 250.0 g of O2 = 15.63 moles

Explanation:

The chemical reaction is:

Amount of O2 produced = 250.0 g

Molar mass of HgO = 216.59 g/mol

Molar mass of O2 = 32.00 g/mol

Moles of O2 produced =

Based on the reaction stoichiometry:

2 moles of HgO produces 1 mole of O2

Therefore, moles of HgO needed to produce 7.813 moles of O2 is:

=

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa