Determine the mass in grams of copper (ll) sulfide (Cu2S) formed when 15.0 g copper(I) chloride (CuCl) reacts with excess hydrogen sulfide (H2 S) according to the following unbalanced chemical equation.
CuCl(aq)+ H2S(g) —> H2S(s)+ HCl(aq)

What is the independent variable in this investigation? mass volume sample number substance density

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.