If 500 ml of air contains 2 x 10^22 particles (Atoms and molecules), how many particles do you inhale in one day if you breath 15000 L of air?

a. 2 x 10^22

b. 6 x 10^26

c. 1.2 x 10^27

d. 5 x 10^24

In a science lab, when an acid is splashed on your skin what do you wash it with?

Common oxidation states of mercury are + 1 and + 2. In the + 1 oxidation state, mercury forms a diatomic cation. In the + 2 oxidation state, mercury is a typical monatomic cation.

Both the freezing temperature and the melting temperature of water are the same (0°C). Explain why a substance like water freezes and melts at the same temperature.

If you have 5.2 moles of Na and excess CI2 how many moles of NaCI will be produced 2Na+CI2->2NaCI 10.4 moles NaCI 2.6 moles NaCI 5.2 moles NaCI 2 moles NaCI

Which of the following landforms is formed by river erosion?

When you measure something in meters cubed, you are measuring

Low density: low pressure: high density Is which. evaporation? water vapor? condensation / liquid water

Which structures are found on sponges? pores medusae polyps stinging cells

Coefficients in a chemical equation are used to: balance the number of atoms on both sides of the equation ensure that all subscripts on both sides of the equation are the same indicate energy changes that occur during the reaction indicate the type

What determines your blood cholesterol level?