What are two reasons that the noble gases had escaped notice?

What are groups 1, 2, and 3 examples of on the periodic table? A. Nonmetals B. Metals C. Noble gases D. Metalloids

Why is refraction so important in eyeglasses.

Deter - mine how many moles of vitamin A2 contain the same number of atoms as 1.000 mol vitamin A.

Do you know how to do this? if you have 4 grams of carbon-14, how much carbon 14 remains after 11,460 years? the half life is 5,730 years.

A double carbon-carbon bond is found in a molecule of (1) pentane (3) pentyne (2) pentene (4) pentanol

Suppose you find a rock that contains some potassium-40 (half-life of 1.3 billion years). you measure the amount and determine that there are 5 grams of potassium-40 in the rock.

What are some positive and negative effects of the production of maple syrup on society and the environment?

Describe and give an example of parasitism.

Why is a dilute solution of oleic acid used instead of pure oleic acid?

The vapor pressure of benzene (C6H6) is 73.0 mm Hg at 25 °C. What is the vapor pressure of a solution consisting of 179 g of benzene and 0.217 mol of a nonvolatile nonelectrolyte?