A 2.5 mg sample of magnesium powder is ignited with 2 mg oxygen in a sealed container. All of the magnesium is consumed and 4.15 mg of white solid magnesium oxide is formed.

Find the mass of the unreacted oxygen

Using Dalton's Law solve the following problem. What is the total pressure of a submarine vessel when the partial pressures are the following: 0.77 atm of N2, 0.21 atm O2, 0.1 atm of CO2, and 0.1 atm of CO? PT = P1 + P2 + P3 + P4

What is the percent yield for the reaction below when 544.5 g SO2 and 160.0 g O2 produce 382.0 g SO3? 2SO2 (g) + O2 (g) 2SO3 (g)

How Can you saperate Sand and sugar?

How is density found

A voltaic cell is constructed using the following half-reactions: Ag + (aq) + e - - - - > Ag (s) EoAg + = + 0.80 V Cu2 + (aq) + 2e - - - - > Cu (s) EoCu2 + = + 0.34 V Determine the cell reaction and the standard cell potential.

Tina has a sample of gaseous water at a temperature of 400 C and a pressure of 4 atm. If Tina increases the pressure to 200 atm, will the gaseous water liquefy? Why or why not?

Label the molecular shape around each of the central atoms in the amino acid glycine. hint

Which has more atoms, 2moles of carbon or 2 moles of aluminum

At 100 degrees c, water reacts with acetic anhydride to make acetic acid. also, at 100 degrees c, water reacts with acetylsalicylic acid and reverts it to salicylic acid and acetic acid.

What is the valence electron configuration of the group 2a elements?