Uranium-232 has a half-life of 68.8 years. After 344.0 years, how much uranium-232 will remain from a 100.0-g sample?

1.56 g

3.13 g

5.00 g

20.0 g

what happens if you decrease the kinetic energy of a substance? what would happen if you increased the kinetic energy of a substance?

To do work, this truck uses energy stored in chemical fuel and an electrical battery. How much total energy does this truck put out? 50 J 250 J 400 J 800 J

In natural convection heat transfer, the parameter is the Choose the right answer a) Nusselt number b) Rayleigh number c) Grashof number d) Lewis number

After heating your beaker of Cu (OH) 2, you formed copper (II) oxide. Before you added the H2SO4, you were instructed to decant the supernatant, add warm water, and decant again. What was the purpose of this step

A mixture of benzoic acid and naphthalene was dissolved in tert-butyl methyl ether and the resulting solution was extracted with aqueous sodium bicarbonate.

What is the oxidation number of chlorine

What is a triglyceride? Draw the skeletal structure for a saturated triglyceride whose hydrocarbon tails each contain six carbons.

A 500 g block of metal absorbs 5016 J of heat when its temperature changes from 20.0 ⁰C to 30.0 ⁰C. Calculate the specific heat of the metal.

When delta h is negative the reaction will be endothermic?

Why the atoms k2so4 bond