1 mole of phosphoric acid (H3PO4) and 1.75 moles of NaOH are added to the one liter water. Calculate the pH.

Lead 2 nitrate reacts with sodium sulfate to form lead 2 sulfate and sodium nitrate. Balance the equation.

What is the Ka value if pka=10.36

When 0.40 mol Al is mixed with 0.40 mol Br2, the following reaction occurs: 2Al (s) + 3Br2 (l) → 2AlBr3 (s) Identify the limiting reactant and the moles of leftover reactant, assuming the reaction goes to completion. a.

What has more inertia, a kilogram of feathers or a kilogram of bricks? Explain.

Compounds that are ductile and excellent conductors of electricity have a. isotopic bonds. b. covalent bonds. c. ionic bonds. d. metallic bonds.

56 Explain, in terms of atomic structure, why the elements in Group 2 have similar chemical properties. 131

What must molecules do to react? a. Molecules must heat up b. Molecules must collide c. Molecules must expand to fill their container d. Molecules must interact with a catalyst

How many pictograms are in a gram?

Which type of signaling pathway uses second messengers because the hormone cannot pass through the plasma membrane? a.) amino acid based b.) lipid based

Why are the gases in the troposphere layer denser than the gases in the other layers?