Calculate the number of moles in 21.5g of calcium carbonate

You have 0.5 L of air at a pressure of 203 kPa and - 70 degrees C in a rigid, sealed container. What is the absolute temperature of the air? 1) 70 K 2) 273 K 3) - 70 K 4) 203 K

You are given a solution that is 518 mM lactose. You need to make up 4.5 L of 16.7 mM solution. What volume do you need to transfer from your stock?

If an aqueous solution contains 70% of Isopropyl Alcohol (d = 0.786 g/ml): a: how many ml are alcohol? b: how many ml are water? c: how many grams of alcohol were used to prepare this solution?

Citric acid is one component of some soft drinks. Suppose that 8 L of solution are made from 0.24 g of citric acid, C6H8O7, What is the molarity of citric acid in the solution? (need to convert grams to moles)

Free radical chlorination of ethane can produce higher halogenation products (dichlorinated, trichlorinated, etc ...) in addition to chloroethane.

How did scientists carry out research before and after the scientific revolution?

A student was comparing the solubility of equal amounts of table salt and table sugar at different temperatures. The table below shows the four samples that the student used and the temperature of the water that they were dissolved in.

How many cases of measles would you predict were reported last year

what happens when baking soda is mixed with vinegar a a new substance is formed B the substances are the same c but the baking soda stays the same but the vinegar changes form D the mixture turns from a liquid into a solid

Which celestial object is found in kuiper belt