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163 solutions

Mole Concept

Q. Assume that you have 1.75 g of nitroglycerin in a 341.0 mL steel container at 20.0 °C and 1.00 atm pressure. An explosion occurs, raising the temperature of the container and its contents to 425 °C. The balanced equation is 4 C3H5N3O9(l) → 12 CO2(g) + 10H2O(g) + 6 N2(g) + O2(g) (Figure 1) How many moles of nitroglycerin were in the container originally?

Solved • Nov 13, 2019

Mole Concept

Q. What was the actual number of moles of water per formula unit CoCl2?

Solved • Nov 11, 2019

Mole Concept

Q. Using the Avogadro Number A copper atom has a mass of 1.06x10^-22g and a penny has a mass of 2.5g. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits.

Solved • Nov 11, 2019

Mole Concept

Q. Using the Avogadro Number. A brick has a mass of 4.0 kg and the Earth has a mass of 6.0 x 10 ^27 g. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits.

Solved • Nov 10, 2019

Mole Concept

Q. How many protons are in 37mg of tungsten atoms?

Solved • Nov 9, 2019

Mole Concept

Q. The combustion of 0.225 g sample of an unknown organic compound produces 0.512 g of carbon dioxide and 0.209 g of water. 5CxHyOz+ O2CO2+ H2O How many moles of carbon are in 0.512 g of carbon dioxide?

Solved • Oct 27, 2019

Mole Concept

Q. Determine the mass in grams of a sample of natural copper that has 25 atoms

Solved • Oct 23, 2019