A rock is found to have a mass of 200 g and a volume of 100 ml. what is the rock's density?

Consider the following representation of a reaction mechanism. Step 1: Unimolecular (fast) Step 2: Bimolecular (slow) Step 3: Unimolecular (fast) Which conclusion about the rate law for the reaction above is reasonable? A.

A chemist adds of a zinc nitrate solution to a reaction flask. Calculate the mass in kilograms of zinc nitrate the chemist has added to the flask. Round your answer to significant digits.

Calculate the atomic mass for zinc given the following data for its natural isotopes: 64Zn 63.929 amu 48.89 % 66Zn 65.926 amu 27.81 % 67Zn 66.927 amu 4.11 % 68Zn 67.925 amu 18.57 % 70Zn 69.925 amu 0.62 %

1. Given the reaction: Ca + 2 H2O → Ca (OH) 2 + H2 How many moles of water are needed to react completely with 2.0 moles of Ca? a. 1.0 moles b. 2.0 moles c. 0.5 moles d. 4.0 moles 2. Fe + H2SO4 → FeSO4 + H2 is an example of a. Single Displacement b.

How many atom are in 3 moles of Ca (OH) 2

Cecil writes the equation for the reaction of hydrogen and oxygen below. H2 + O2 → H2O Why does his teacher ask him to balance the equation by including the correct coefficients? A. to show that most molecules exist in pairs B.

Which type of reaction occurs when you bake a tray of cookies?

How can you separate a mixture containing two different liquids? filtration evaporation distillation magnetic attraction

What is the hydrogen ion concentration [H+] in a 3.76 x 10^-2 M solution of nitric acid (HNO3)

The condensation temperature of a material is the temperature at which the material makes a transition between being a vapor and being a solid. Three of the most important materials in the early solar nebula were water vapor, iron, and hydrogen.