What compotent of air is least nessasery for life on earth

How many molecules are there in the following 25.0 g H2SO4

How are Renewable and Nonrenewable energy alike?

How many grams are in 1.11 moles of manganese sulfate, Mn3 (SO4) 7?

A camper burned a piece of paper to start a campfire. is burning paper a physical or chemical change? why? If you said chemical, what are the reactants and products? The ash has less mass than the paper, was mass conserved during the reaction?

A bomb calorimeter has a heat capacity of 2.18 kJ/K. When a 0.176g sample of gas with a molar mass of 28.0 g/mol was burned in this calorimeter, the temperature increases by 2.12 K. Calculate the heat of combustion for 1 mol of this gas. - 1.

The Minoan civilization existed on the island of Crete, and it was influential in the Mediterranean during the 2000s BCE. In which way can the Phoenicians be described as successors to the Minoans? A. Phoenicia had a powerful, well-trained army. B.

In a distillation experiment, Provide reasons for any discrepancies between the initial volume of the liquid mixture (20ml) and the sum of the total final volume (18.4ml). Take into account water's property of solvent.

1. Bromine is a A. black solid B. red liquid C. colourless gas D. highly inflammable gas 2. The hardest substance available on earth is A. Gold B. Iron C. Diamond D. Platinum 3.

What does a positive standard reduction potential mean about a given element? The element is more readily oxidized than hydrogen. The element is more readily oxidized than most other elements. The element is more readily reduced than hydrogen.

Which statement correspond to a cellular respiration