Which of the following is a period 4 representative element? C Ti K Sn

What is mole percent?

The volume of oxygen, collected over water, is 185 mL at 25 degrees Celsius and 600 torr. calculate the dry volume of the oxygen at STP (for the question, you have to convert from mL to L, Celcius to Kelvin, and torr to atmospheres)

A box has a mass of 100 grams and a volume of 20 mL. Will the box sink or float in water? How do you know?

The amount of energy required to change the phase of a molecular substance such as sucrose is greater than an ionic substance such as table salt. true or false

3. In the formation of acid rain, sulfur dioxide reacts with oxygen and water in the air to form sulfuric acid. Write a balanced chemical equation for the reaction. If 2.

When a soda can is dropped, it should not be immediately opened. Why? (A) The soda will squirt out because of decreased temperature. (B) The soda will squirt out because of increased temperature.

Explain the difference between layers and band.

A metal block has a mass of 122 grams and measures 2cm x 2cm x 4cm. What is the density of the block?

What are valency and radicals

Tell me some bad effects of Ethanol