Is perfume in a bottle a solid, liquid or gas

A sample of helium gas has a volume of 2.0 L at a pressure of 4.0 atm. What is the volume of gas at 380 mmHg

A 100.-gram sample of H2O () at 22.0°C absorbs 8360 joules of heat. What will be the final temperature of the water?

Is torn paper physical or a chemical change

The nutritional information on a cereal box shows that one serving of dry cereal has 90 calories (actually kilocalories).

Which models are most appropriate for him to use?

A certain element consists of two stable isotopes. The first has a mass of 62.9 amu and a percent natural abundance of 69.1 %. The second has a mass of 64.9 amu and a percent natural abundance of 30.9 %. What is the atomic weight of the element?

Nonmetals rarely lose electrons in chemical reactions because?

What is the mass of carbon in 500. g of octane?

Which of the following is true about the relationship between the energy gap (∆E) between the spin states for a 1H nucleus and the strength of the external magnetic field?

Why does a neutral solution have a of 7.0? In a neutral solution, the [H3O+]=1*10^-7 at 25∘C. pH=-log[1*10^-7]=7.0. In a neutral solution, the [H3O+]=1*10^7 at 25∘C. pH=log[1*10^7]=7.0. In a neutral solution, the [H3O+]=1*10^14 at 25∘C. pH=0.