How can i demonstrate that a piece of chalk has mass

How can you find thing you lost

How would the composition of an atom change both the atomic number and mass number each increase by one

In a chemical interaction 10 g of hydrogen chloride is added to 20 g of zinc to form 24 g of zinc chloride and a certain amount of hydrogen gas. What mass of hydrogen gas is expected to be formed? 6 g, 14 g, 34 g, 54 g

Which of the following types of energy does an object have because of its motion? Chemical energy Gravitational energy Kinetic energy Potential energy

HURRY I"M BEING TIMED! if an unknown solution has a pH of 2. how would you classify this solution?

The mixing of which pair of reactants will result in a precipitation reaction? the mixing of which pair of reactants will result in a precipitation reaction?

A balloon has 18.9 moles of hydrogen gas at a volume of 428 L. What would the volume of the gas be if the balloon had 14.0 moles of hydrogen gas left after 1 day?

An analytical chemist is titrating 242.5 mL of a 1.200 M solution of hydrazoic acid HN3 with a 0.3400 M solution of NaOH. The pKa of hydrazoic acid is 4.72. Calculate the pH of the acid solution after the chemist has added 1006.

A gas stream contains 18.0 mol% hexane and the remainder nitrogen. the stream flows to a condenser, where its temperature is reduced and some of the hexane is liquefied. the hexane mole fraction in the gas stream leaving the condenser is 0.0500.

What type of solution is aerated water. why is it so.