General Chemistry Answers

Calculate the mass of a sample of CO2 with a volume of 0.575 at 50°C and 115 kPa

A gas has a volume of 28 liters at STP. Calculate the pressure if the temperature is increased to 35°C and the volume is decreased to 15 liters

In an experiment, 57.4 g of iron (II) chloride solution reacts with 45.3 g of sodium hydroxide solution.

FeCla(an) + 3NaOH(an) -› Fe(OH) scs) + 3NaC|(ag)

Which reactant is the limiting reagent?

How much (in grams) of each product forms?

How much of the excess reagent (in grams) will be leftover after the reaction is complete?

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

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.

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

H2O -> H2 + O2

A.How many moles of O2 are produced when 1.26 moles if H2O is reacted?

B. How many moles of H2O are needed to produce 55.7 moles of H2

C. If enough H2O is reacted to produce 3.40 moles of H2 then how many moles of O2 must have been made?