Which of these represents a physical change? a iron rusting b ice melting c wood burning d food spoiling

The gene for curled ears is dominant over the gene for straight ears (e). If you crossed a cat with curled ears (Ee) and a cat with straight ears (ee), what percent of the offspring are expected to have curled ears?

How well can you apply boyle's law to this sample of gas that experiences changes in pressure and volume? assume that temperature and number of moles of gas are constant in this problem.

Which element would have properties most like ca (calcium) ?

Name three subatomic particles. Describe the mass, relative mass, and charge of each one

The air pressure in a tire is 2.38 atm. What is this pressure in kilopascals?

Compare and contrast the outer core and the inner core.

What colors make the color turquoise?

12.23 g of ammonia (NH3) are dissolved in enough water to make 560.0 mL of solution. How many moles of NH3 are added to the water?

According to the ph scale, what is the approximate ph of acid rain? a. 4.0 b. 4.5 c. 5.0 d. 5.5

You find a little bit (0.150g) of a chemical marked Tri-Nitro-Toluene, and upon combusting it in oxygen, collect 0.204 g of CO2 and 0.030 g H2O (we'll assume that these are the products, along with nitrogen).