What reactions is : energy released as light or thermal energy (synthesis, combustion, replacement, decomposition)

In the chemical compound magnesium chloride, MgCl2, one mole of magnesium chloride contains how many chloride ions? A) 0.5 ions B) 1.20 x 1024 ions C) 3.01 x 1023 ions D) 6.02 x 1023 ions

How many helium atoms are in a helium blimp containing 498 kg of helium?

A mixture initially contains A, B, and C in the following concentrations: [A] = 0.700 M, [B] = 0.850 M, and [C] = 0.300 M. The following reaction occurs and equilibrium is established: A+2B⇌C At equilibrium, [A] = 0.570 M and [C] = 0.430 M.

Which of the following is true about the Sun? A. The Sun is the only star in the Universe. B. The Sun is one of many stars in the Milky Way Galaxy. C. The Sun is the only star in the Milky Way Galaxy.

If you put tungsten metal under high pressure, predict what would happen to the distance between w atoms.

What is the mass of 1 mole of carbon dioxide CO2?

An experiment is performed using 7 liquids; Methanol, Ethanol, Propanol, Butanol, Water, Pentane and Acetone. a.) The order of rates of evaporation from fastest to slowest are shown: Pentane, Ethanol, Methanol, Acetone, Water, Propanol and Butanol.

What does a molecule look like

If a student calculated 0.02789 moles of copper (II) cations (Cu2 + ions) in the sample, how many moles of copper metal (Cu0) could be obtain from the sample at the end of the experiment?

99pts! Which of the following best explains what happens when the kinetic energy of particles in a gas state decreases? They vibrate so quickly that the particles ionize and become plasma.