The equation 2NaNO3 + CaCl2 - -> 2NaCl + Ca (NO3) 2 is balanced. How many atoms of oxygen (O) are there on either side of the equation?

a.) four

b.) six

c.) two

d.) one

When an electron jumps from a high energy state to a lower state, what form does the emitted energy take?

Which factor cause Earth to experience seasons? Check all that apply.

Which of the following is true? A. Lithium is the least reactive element in group 1, because it is the smallest and holds its valence electron more tightly than the others in the same group. B.

Carbon cycle is returned to the atmosphere primarily by the respiration of consumer.

A model is any representation of an object or

Car Q and z are put though an endurance test to see if they can travel at 120 km/h for 5.0 hours. Each car has a 45-L fuel tank. Car z must stop to refuel after traveling for 4.2 hours. Car Q, however, travels for 5.4 hours before running out of gas.

What happened to the atoms in the heated metal ball so that it didn't fit through the ring?

A 3.00 L flexible container holds a sample of hydrogen gas at 153 kPa. If the pressure increases to 203 kPa and the temperature remains constant, what will the volume be?

Measurement of the functions of a nephron reveals a glomerular capillary pressure of 69 mm Hg, and a pressure in the capsular space of 15 mm Hg.

Water is unique because the density of it's solid is less than the density of it's liquid. Describe how life would be different if this weren't true