Na2S is a strong electrolyte. If 5.00 g of Na2S is dissolved in 200.0 ml of solution b. Calculate the molarity of the sodium ion in solution

An atom contains 92 protons, 90 electrons, and 146 neutrons. b. What is the atomic number?

A sample of nitrogen gas is confined to a 14.0 L container at 375 torr and 37.0°C. How many moles of nitrogen are in the container?

Name the following compound: TiCl5

A 16.0 gram sample of propane gas (C3H8) is burned according to the equation C3H8(g) + 5O2(g) –> 3CO2(g) + 4H2O(g) In an enclosed container with a volume of 2.25 L at a temperature of 322 K. If 12.1 grams of propane is burned in the presence of 10.2 atm of oxygen at the above temperature and volume conditions, determine the theoretical yield of H2O in grams.

Calculate the relative (percent) uncertainty

At moderate pressures (~ 200 atm), the measured pressure exerted by CO2 gas is less than that predicted by the ideal gas equation. This is mainly because

Write the correct chemical formula for the following compound: diphosphorus pentoxide

A 16.0 gram sample of propane gas (C3H8) is burned according to the equation C3H8(g) + 5O2(g) –> 3CO2(g) + 4H2O(g) In an enclosed container with a volume of 2.25 L at a temperature of 322 K. a. If the sample of propane burns completely and no oxygen remains in the container, calculate the mole fractions of CO2 expressed as a decimal with 3 significant figures.

A student attempting to determine the density of an unknown liquid collects the following data Mass  (g)                  Volume  (mL) 8.709                       12.0 12.352                     17.0 16.345                     22.5 Calculate the average density