Libby is doing experiments with two different magnets. Magnet A can only attract thumbtacks that are up to 1 inch away from it. Magnet B can attract thumbtacks that are up to 3 inches away from it. What is likely true of the magnets?

Which is an example of a chemical change? a pan of water boils. a candle burns. a teaspoon of salt dissolves. a burner gets red hot

A 5.0L balloon in a freezer is at a temperature of - 50˚C has a pressure of 800 mm Hg. What will be the new pressure (in mm Hg) if the balloon is taken out and placed in a warm room (Temperature 37˚C) and the volume expands to 7.0 L? Your answer

What mass of magnesium oxide is produced from 2.00 moles of magnesium?

This is a net gain or loss of electrons

A voltaic cell consists of a strip of cadmium metal in a solution of cd (no3) 2 in one beaker, and in the other beaker a platinum electrode is immersed in a nacl solution, with cl2 gas bubbled around the electrode.

Using the kinetic theory what happens to oxygen particles as they are cooled

Identify the following: 1. The only 2 liquid elements. 2. The element in period 4, group 0. 3. The second metalloid in period 4. 4. The first element in group 4A.

You are about to open a container of soy milk but notice that there are instructions to "shake well before serving." the soy milk is most likely a

Give reason: a. Fractionating columns with beads are used for fractional distillation b. Crystallisation is a better technique than evaporation

How can a gardener remedy soil that is overly acidic?