A fictitious element X is composed of 10.0 percent of the isotope 55X, 20.0 percent of the isotope 56X, and 70.0 percent of the isotope 57X. Calculate the weighted atomic mass of element X to the nearest tenth.

I don't know why I'm getting it wrong but isn't CrS Chromium (II) Sulfide?

How many grams are there in 4 moles of cu (cn) 2?

For the reaction below, describe the temperature and pressure conditions that would produce the highest yield of the forward reaction. Explain your answer in terms of Le Châtelier's principle.

Which of the following statements is predicted to be false? (a) an aqueous solution of CaCl2 exhibits ion-dipole forces between solute and solvent (b) an aqueous solution of ethanol exhibits H-bonding forces between solute and solvent (c) an aqueous

In the lab, ammonia was mixed with water to form ammonium hydroxide. What is/are the reactant (s) ? A. water and ammonia B. ammonia C. ammonium hydroxide D. water and ammonium hydroxide

How will increasing the pressure on the system affect this equilibrium reaction? 2H2 (g) + O2 (g) - > 2H2O (g)

What are small round structures in the cell that breaks down large food particles into smaller ones

A balloon has a volume of 2.5 L and contains 0.100 moles of Helium. Another balloon has a volume of 5.0 L. They are at the same temperature and pressure. How many moles of gas does the second balloon contain?

Why is it important to that the solid be dry before the final mass measurement?

What is 0.00055030 in Scientific form?