Which unit would be used to measure the amount of matter in an object?

Use valence bond theory to explain the bonding in HCl

What activities could be done in lake Assad

A compound of barium and oxygen was dissolved in hydrochloric acid to give a solution of barium ion, which was then precipitated with an excess of potassium chromate to give barium chromate. If a 1.345-g sample of the compound gave 2.

Stephanie has been doing research on how petroleum is formed. She says that oxygen must be present while the tiny plants and animals are being compressed. Is Stephanie correct?

A 0.0200 gram piece of unknown alkaline earth metal, M, is reacted with excess 0.500 M H 2 SO 4, and the hydrogen gas produced is collected over water. The total gas pressure inside the collecting tube is 1.01 atm., the temperature 24.0 o C.

Are erasers made from rubber?

The specific heat of nickel is 0.44 J/g*⁰C. How much energy needed to change the temperature of 95.4g of nickel from 32⁰C to 22⁰C. Is the energy absorbed or released?

What compound do the ions Al3 + and O2 - form

Draw every stereoisomer for 1,2-difluoro-1,2-dimethylcyclopentane. use wedge-and-dash bonds for the substituent groups, and be sure that they are drawn on the outside of the ring, adjacent to each other.

Suppose an ice cube weighing 36.0 g at a temperature of 10°C is placed in 360 g water at a temperature of 20°C. Calculate the temperature after thermal equilibrium is reached, assuming no heat loss to the surroundings.