After swallowing, how does food go to the stomach through the esophagus?

A. solely by gravity

B. pushing at the tongue

C. air pressure

D. squeezing of esophagus

Which electron transition represents a gain of energy? A. from 2nd to 3rd shell B. from 2nd to 1st shell C. from 3rd to 2nd shell D. from 3rd to 1st shell

A common stain remover is sold in concentrated form as 3M sodium hypochlorite (NaOCl). You need to create 400 milliliters of a 0.5M solution of sodium hypochlorite to fill a spray bottle. What volume of 3M sodium hypochlorite is needed? 15.0 mL 66.

1. What hypothesis could you propose about the relationship between the position of a type of atom in a molecule and the number of bonds that the atom forms? Explain your thinking.

At a constant temperature, 600 mL of an ideal gas is at a pressure of 760 mmHg. If the volume is decreased to 300 mL, the pressure of the gas will be

What factor determines wether an acid is strong or weak?

Elements in the noble gas family are considered stable because

A race car driver starts a race with his tires at 13.2 psi at a temperature of 25 C. What will the pressure in the tires be (in psi) when they heat up to 63 C?

What source provides most of the energy consumed in the United States?

One way to experimentally measure the heat capacity of a Styrofoam cup calorimeter would be to melt a known mass of ice in warm water and measure hte temperature change.

For which gases does the ratio of PV to RT equal a constant? A. gases of very low temperature B. real gases C. gases at very high pressure D. ideal gases