Which material has a crystalline structure at room temperature (20 degrees Celsius)

1. Water

2. glass

3. Nitrogen

4. Sucrose

Which definition describes activation energy? the speed which reactants form products in a chernical reaction the short-lived, high - energy intermediate between reactants and products the diagram showing a change in energy between reactants and

Gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water. Suppose 56. g of butane is mixed with 138. g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction.

The number of moles in 2.93 g of Li2O in corrext sig figs

Which is true with respect to the kinetic energy of a molecule? O A. it is the lowest at low temperatures B. it increases at low temperatures C. it is the same at all temperatures D. it is the lowest at high temperatures

Assume you had a silver sphere with a mass of 1.50kg. calculate the diameter of the sphere (in cm). the density of silver is 10.5 g/cm^3. the formula for the volume of a sphere is ... v = 4/3 3.14 r^3

Condension occurs in the inside of your windows in Winters, why?

How can you use Hess's law to determine a reaction's enthalpy?

7. How much energy in KJ is released when 15.0 g of steam at 100.0 degrees Celsius is condensed and then frozen to ice at 0.0 degrees Celsius?

Consider the reaction: 8H2S (g) + 4O2 (g) →8H2O (g) + S8 (g). Δ[H2S]/Δt = - 0.033M/s. Find Δ[O2]/Δt. Δ[H2O]/Δt. Δ[S8]/Δt. Find the rate of the reaction.

At room temperature and pressure what is the volume of one mole of oxygen?