Which of these is a mixture?

A. carbon

B. carbon dioxide

C. air

D. oxygen

For the reaction at equilibrium: 2 NO (g) + O2 (g) = 2 NO2 (g) which change will increase the amount of NO2 (g) ? 1) add NO gas 2) remove NO gas 3) add a catalyst 4) remove O2 gas 5) add NO2 gas

What is the empirical formula of an oxide of nitrogen containing 63.61% by mass of nitrogen and 36.69% by mass of oxygen? A. NO B. N2O3 C. NO2 D. N2O

Which of the following Van der waals forces would have the most action among molecules of methane (CH4) ? A) Dipole-dipole B) ion-dipole C) london dispersion 2.

What mass of carbon dioxide gas occupies a volume of 8.13 L at 204 kPa and a temperature of 95 0 °C?

What became of alchemy after the 1700s

200 lb/in" = ? tons/ft?

What variable is not used in the combined gas law

What is bromic acid

Which answer choice best explains why atoms of carbon-14 (C-14) are unstable?

When can polar bears take care of themselves