What is the pH of a solution with [H ] = 1.25'10-10?

What is earth made out of?

Which is a correct comparison between the modern quantum model and John Dalton's model of the atom? The modern model is not as widely accepted by scientists as Dalton's model.

1. what is the formula or equation of motion? 2. what is the formula or equation of positive energy? 3. what is the formula or equation of speed?

The equilibrium vapor pressure is achieved when the rate of evaporation equals what? a. rate of sublimation b. rate of condensation c. rate of freezing d. rate of melting

When 4.21 grams of potassium hydroxide are added to 250 mL of water in a coffee cup calorimeter, the temperature rises by 4.14°C.

Do metals form anions or cations

Which of the following gases in Earth's atmosphere would you expect to find as molecules and which as individual atoms? a. Nitrogen b. Oxygen c. Argon

You just found a metallic object in a creek bed. From the following tests and Figure 2, determine what it is. 96.5g will balance the object. Its mass is g. The object displaces 5 mL of water. Its volume is cm 3. The density of the object is g/cm 3.

Extend your thinking: Why do you think the temperature does not change much during a phase change? If possible, discuss your answer with your classmates and teacher.

Which bond has the least degree of polarity? K-o Li-o No-o Rb - 0