7 Determine the mass of each of the following:

i) 10.2 mol of ethane
ii) 0.0146 mol of potassium hydroxide and Calcium hydroxide respectively

Explanation:

mass = no. of moles x molar mass (Mr)

i- mass = 10.2 mol x 30 g/mol

            = 306 g

ii- mass of potassium hydroxide = 0.0146 mol x 56g/mol

                                                      = 0.8176g

  mass of calcium hydroxide= 0.0146mol x 74 g/mol

                                               = 1.0804g

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.

the answer your looking for is c).