A scientist who wants to date materials older than 40,000 years would most likely use.

If the pressure exerted by a gas at 100 Celsius in a volume of 0.044 L is 3.81 atm, how many maples of gas are present

In Haber's process, 30 moles of hydrogen and 30 moles of nitrogen react to make ammonia. If the yield of the product is 50%, what is the mass of nitrogen remaining after the reaction?

A manual page break is also known as a soft page break.

How much heat, in joules and in calories, must be added to a 75.0-g iron block with a specific heat of 0.449 j/g °c to increase its temperature from 25 °c to its melting temperature of 1535 °c?

In the reaction between bromine and sodium, a bromine atom gains an electron. What ion is formed? Is the bromine oxidized. or is it reduced?

A solution containing 292 g of Mg (NO3) 2 per liter has a density off 1.108 g/ml. What is the molarity of the solution?

Ozone, o3 (g), is a form of elemental oxygen produced during electrical discharge. is δh∘f for o3 (g) necessarily zero?

Calculate the molecular mass of carbon dioxide (CO2) :

You and your lab partner are asked to determine the density of an aluminum bar. The mass is known accurately to 4 significant figures. You use a simple metric ruler to determine its size and calculate the results in column A.

What is more inflammable? gasoline or ethanol?