What is the total charge of the nucleus of a boron atom

what is the acceleration of gravity if the force is 390000 N abd the Mass is 9000 kg (also what formula do you use for this?)

Stone tools enabled people to hunt and grow crops made the food supply more

Is yeast the same as baking powder

Consider that calcium metal reacts with oxygen gas in the air to form calcium oxide. suppose we react 6.84 mol calcium with 4.00 mol oxygen gas. determine the number of moles of calcium oxide produced after the reaction is complete.

How many energy levels does calcium have?

What kind of information can we gain by calculating H

How many moles of oxygen (O2) are present in 33.6 L of the gas at 1 atm and 0°C? A: 1.5 B: 2 C: 22.4 D: 32

A mixture of gases at a total pressure of 95 kPa contains nitrogen, carbon dioxide and oxygen. The partial pressure of carbon dioxde is 24 kPa and the partial pressure of the nitrogen is 48 kPa.

The colour change of methyl orange with neutral substance

What occurs in a displacement reaction