How many moles of each element 19.5g platinum

What are two ways radio waves and x rays are alike and different

How can we find the number of moles in equilibrium?

How are a bar magnet and a electromagnet different

The si base units for length and time are

Use the equation 2Cu+O2-->2CuO, to find how many grams of copper react to produce 2.44 mol CuO.

Which is the most important factor in determining the state of a substance? the size of the atoms in a substance the number of molecules in a substance the position of the electrons on the outer valence shells the balance between intermolecular

What happens when Potassium (K) forms and ion? A. It gains an electron <- - I believe this is correct. B. It loses an electron C. It shares and electron with a nonmetal D. It shares and electron with a metal

Which of the following is not a strong acid in aqueous solution? a. HI b. HF c. HClO4 d. HCl e. HBr

Consider this reaction: Zn (s) + 2HCl (aq) → ZnCl2 (aq) + H2 (g). Which combination of factors will affect the rate of the reaction?

Which of these makes it easier for scientists to understand measurement data A. having a universal language B. having a standard system of measurements C. having multiple languages D. having multiple systems of measurement