A motorcycle travels 825 meters in 12 seconds. What is its average speed? m/s

How many grams of Hydrogen (H) would need to react with 190 grams of Fluorine (F) to make 200 grams of HF (Hydrofluoric Acid) ? Question 6 options: 200 20 10 5

Most elements will have the same number as what?

How many molecules are contained in 0.800 mol o2?

Which of the following is not true? Newton's Laws include three laws about force and motion. An object will not change velocity unless acted upon by a force. Every action has an equal and opposite reaction.

What molality of pentane is obtained by dissolving 15 g pentane, c5h12, in 245.0 g hexane, c6h14?

7. Convert 158 g of C to moles.

How does molecular size affect solubility

Is mass conserved when 200 g of water undergoes a physical change? Use complete sentences to support your answer by explaining how this can be demonstrated.

For wach of the following cases, state whether the density of the object increases, decreases, or remains the same: (a) A sample of chlorine gas is compressed (b) A lead weight is carried up a high mountain. (c) A sample of water is frozen.

A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. In an experiment, a 0.