Reactant P contains 50 J of energy, and reactant Q contains 35.3 J of energy. The reactants combine to form product PQ, which contains 104 J of energy. What is the energy transformation?

Alpha Centauri B is a star that is about the same size as the Sun. Why does it appear much smaller and dimmer than the Sun when seen from Earth?

The average density of a planet is 3.05 g/cm3. What is its density in kg/m3? (Enter your answer in scientific notation.)

Explain how seismic waves are generated by an earthquake

The density of solid cu is 8.96 g/cm3. how many atoms are present per cubic centimeter of cu?

What is the solubility of KI at 10C?

What is the difference between a subscript and a coefficient?

Find the temperature from 150ml cylinder containing 0.75 moles gas at 153kpa.

The balanced equation for the gaseous state oxidation of ammonia is shown below. 4 nh3 + 5 o2 → 4 no + 6 h2o how many moles of o2 are required to react with 1.2 mole of nh3?

You have 0.00891 g of platinum. What is this in micrograms?

When electrons are removed from the outermost shell of a calcium atom, the atom becomes an anion that has a larger radius than the atom. an anion that has a smaller radius than the atom. a cation that has a larger radius than the atom.