How many moles of aluminum oxide (al2o3) are in a sample with a mass of 204.0 g?

What is one observation you can make aboit venus

Do you think the theory of plate tectonics is credible

What is the [oh-] of a solution if its ph = 8.78? answer in units of m?

What is the frequency of light with a wave - length of 4.0 * 10-7 m?

If a sample of gas has a volume of 5.00 L @ 92.3 C, what will the volume of the gas be if the temperature is lowered to - 37 C

Which of the following statements is not considered weather? The wind is blowing 20 miles per hour right now in Kansas. It is raining in Seattle. It is usually humid in Florida. It is snowing in Colorado.

A nickel atom (Ni) has a mass numbet of 61. how many neutrons does the atom have

Select the more electronegative element in each pair. a. Cl or Fb. Se or Oc. N or Asd. Na or Mg

Find the molar mass of potassium dichromate, K2Cr2O7

Zn (s) + cu2 + (aq) →zn2 + (aq) + cu (s). part a under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 51.0 g of copper is plated out?