What is the Element hydrogen made from

What information do the coefficients in a balanced chemical equation tell you? the amount of energy from the products the ratios of the number of moles of each substance that react and that are produced the physical states of the compounds reacting

A gas has a volume of 590 mL at a temperature of - 55.0 C. What volume will the gas occupy at 30.0 C?

3. In a first order reaction, what is the rate constant if the rate is 0.060M/s and the reactant concentration is 0.030M?

Which statement best reflects a change in weather? Today is cloudy, but tomorrow will be clear and sunny. The average rainfall has decreased over the past five years. Ocean temperatures are projected to increase over time.

If a landlord does not allow you to have pets in the building, but allows you to have a dog, is that an exception? Why or why not?

How much more acidic is a solution with a PH of 5 than a solution with a PH of 8?

A sealed balloon is filled with 2.20 liters of helium gas at 20.0° C. If the pressure does not change, what is the temperature when the balloon expands to a volume of 2.60 liters? 16.9° C 23.6° C 25.1° C 73.3° C

If I have a molar concentration of Na2S2O3 of. 02M and a volume of. 001L. As well as a Molar Concentration of KI. 3M and H2O2 of. 1M. The equation of the reaction is 2S2O3+I3 - >3I+S4O6. The question is "How many moles of S2O3 are consumed".

Solid sodium reacts violently with water producing heat, hydrogen gas and sodium hydroxide. How many molecules of hydrogen gas are produced when 65.4g of sodium are added to water? 2Na (s) + 2H2O (l) - - >. 2NaOH (aq) + H2 (g)

Use "Folded Mountain" in a sentence? For science