What is pH?

A)

the concentration of potassium ions in a solution

B)

how basic a solution is

C)

how acidic a solution is

D)

the concentration of hydrogen ions in a solution

Which of the following is false? Charged molecules are insoluble in water. Hydrophobic molecules tend to be nonpolar and hydrophilic molecules tend to be polar. Gasoline has partial positive and negative charges which allows it to dissolve in water.

The modern atomic model includes electrons orbiting the nucleus. which of the following parts of dalton's atomic model was disproved by the discovery of the electron? - atoms are tiny particles. - atoms cannot be divided into smaller parts.

A 22.5-g sample of ice at - 10.0°C is mixed with 110.0 g water at 85.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities for H₂O (l) and H₂O (s) are 4.18 J/g･°C and 2.

Name the 3 processes of physical weathering

A beaker contains a clear, colorless liquid. part a if it is water, how could you determine whether it contained dissolved table salt? do not taste it!

The osmotic pressure exerted by a solution is equal to the molarity multiplied by the absolute temperature and the gas constant RSuppose the osmotic pressure of a certain solution is measured to be 22. atm at an absolute temperature of 353.

Which one of the following is a redox reaction?. 2 Na (g) + Cl2 (g) 2 NaCl (s) A. K2Cr2O7 (aq) + 2 KOH (aq) 2 K2CrO4 (aq) + H2O (l) B. H2O (l) H + (aq) + OH - (aq) C. Na2CO3 (s) + 2 HCl (aq) 2 NaCl (aq) + CO2 (g) + H2O (l) D.

Name 4 common chemical properties of matter

Why is photosynthesis so important to plants, and can't animals use it?

One way the government of Kim Jong-il controls the lives of the people who live in North Korea is by a. requiring every citizen to vote. b. controlling information its people receive from the outside world. c. enforcing free trade with other nations.