Chemistry Answers

When a solution containing excess Sodium sulfate is added to a second solution containing 3.18 g of Barium nitrate, Barium sulfate precipitation. a. Calculate the theoretical yield of barium sulfate. b. If the actual yield is 2.69 g. Calculate the percent yield.

how many grams would be contained in 3.49 x 10^80 molecules of H2SO4?

A rigid plastic container holds 1.00 L methane gas at 0.9 atm pressure when the temperature is 295.0 K. How more pressure will the gas exert if the temperature is raised to 317.6k

A gas occupies 19.3 L at STP. What volume will it occupy at 735 torr and 57°C?

1.      Assume that in the decomposition of KCIO₃ the volume of oxygen gas produced at STP in cm³ is 100 times its molar mass. Calculate the mass of KCI formed in this reaction 

What mass of silver metal is produced from an excess of copper wire added to 4.92g of AgNO3?

What is the balanced equation when cupric oxide, a black solid, and aqueous sulfuric

cupric sulfate crystals and water are formed.

Which are the product(s) of this chemical reaction?

FeCl3 + 3NH4OH

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For a cylinder containing helium gas indicate if cylinder A or cylinder B represents the new volume for the following changes (n and T are constant).

1) pressure decreases

2) pressure increases

What is the volume (mL) of 55 g of Pb with the density of 11.29 g/mL