Evaluate the expression for x=4 and y=3 4x-3y

What name should be used for the ionic compound Pb (SO4) 2

Which item below is NOT an example of how the general rule for dissolving works?

Transmutation involves___ A. nuclear change. B. chemical change. C. both a nuclear change and a chemical change. D. neither a nuclear nor chemical change.

Why do you think the process to create a protected area takes so long?

What is the gram formula mass of Mg (ClO3) 2? A 107 g B 142 g C 174 g D 191 g

Identify the spectator ions in the following complete ionic equation. 2k (aq) s2 - (aq) pb2 (aq) 2no-3 (aq) →pbs (s) 2k (aq) 2no-3 (aq) express your answers as ions separated by a comma.

4. A bird left its post and flew in a triangular path. It flew 21 yards south, 72 yards east and 75 yards diagonally to end back at the post. Is it a right triangle?

Condension occurs in the inside of your windows in Winters, why?

How can you use Hess's law to determine a reaction's enthalpy?

7. How much energy in KJ is released when 15.0 g of steam at 100.0 degrees Celsius is condensed and then frozen to ice at 0.0 degrees Celsius?