Is hydrogen a molecule or compound

A student wishes to prepare 2.00 liters of 0.100-molar KIO3 (molecular weight 214). The proper procedure is to weigh out.

If I have 9 moles of a gas at a pressure of 8.7 atm and a volume of 18 liters, what is the temperature?

Consider four sealed, rigid containers with the following volumes: 50 mL, 100 mL, 250 mL, and 500 mL. If each of these contains. 25 moles of helium gas at standard temperature, which container would have the greatest pressure?

The geological time scale divides the history of Earth into blocks of time known as eras, epochs, periods, and eons.

An element like silicon is not usually used to make wires or pans because it?

A block of lead has dimensions of 4.50cm by 5.20cm by 6.00 cm. The block weighs 1587 g. From this information, calculate the density of lead.

Which states of matter have no definite volume?

Which weighs more 10g of iron or 10g of water

Which pair of elements would combine to form an ionic compound? а b sodium and calcium sodium and chlorine carbon and oxygen carbon and sulfur с d

How many moles are there in 545g of Fe2O3?