Question

Pls Answer the questions above!! its really urgent!! I want only correct answers!​

Answer 1

Answer:

b= 9 gram

c= 22 gram of carbon dioxide is equals to 0.5 moles

Answer 2

a) the number of molecules present in 90 gram of H2O is 30.11 ×10^(23).

b) to find the mass of 0.2 mole of O2 gas , we should know the mass of a single atom of the oxygen that is 16. therefore the mass of 0.2 mole of O2 gas is 3.2 gram.

c) molar mass of 1 mole of CO2=molar mass of C + 2 × molar mass of O =12+34=44.

c) molar mass of 1 mole of CO2=molar mass of C + 2 × molar mass of O =12+34=44. -----≥ 44 g of CO2 = 1 mole of CO2.

44 g of CO2 = 1 mole of CO2. so, 22 g of CO2 = 22/44 moles of CO2 = 0.5 moles of CO2.

d) the chemical formula of ammonium phosphate is (NH4)3PO4.