Calculate the empirical formula from the given percent compositions. 82% nitrogen (N), 18% hydrogen (H)

A sample of nitrogen occupies 10.0 liters at 25°C and 98.7 kPa. What would be the volume at 20°C and 102.7 kPa?

If an acid is splashed on your skin, wash at once with A. Soap B. Oil C. Weak base D. Plenty of water

The formula for magnesium carbonate is mgco3. what is the charge of the cation in ag2co3?

How many moles of atoms are in 2.00 g of 13c?

When a sample of Mg (s) reacts completely with O2 (g), the Mg (s) loses 5.0 moles of electrons. How many moles of electrons are gained by the O2 (g) ?

For the reaction A + B - ⇀ ↽ - C + D, assume that the standard change in free energy has a positive value. Changing the conditions of the reaction can alter the value of the change in free energy (Δ G).

Research results showed that 200 mg of experimental drug r had a minimal-to-modest effect in reducing the symptoms of generalized anxiety disorder (gad).

A sample of air has a volume of 140.0 mL at 67C. To w hat temperature must the gas be lowered to reduce its volume to 50.0 mL at constant pressure?

Consider the following equilibrium reaction having gaseous reactants and products. 4HCl + O2 ⇌ 2H2O + Cl2 Which of the following would result from increasing only the concentration of hydrochloric acid? The concentration of oxygen increases.

What type of temperature changes produce large crystals