If atoms were letters, molecules would be

Which gas would act most like an ideal gas? a. chlorine gas at 32oC b. chlorine gas at - 185oC

How can chemical changes be detected

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 is the relationship between radio waves and motion?

A mixture of CaCO3 and CaO has a mass of 2.750 g. After heating, the mass of the sample is reduced to 2.097 g. What is the mass percent of CaCO3 in the mixture

Predict whether or not a precipitate forms upon mixing 175.0 ml of a 0.0055 mkcl solution with 145.0 ml of a 0.0015 m agno3 solution. identify the precipitate, if any.

The nucleus of one boron atom has 5 protons and 4 neutrons wjat is the total number of electrons in a boron atom

Pure sodium metal explodes when it makes contact with water, and chlorine, in its natural state, is a deadly, poisonous gas. When these two chemicals combine, they form a harmless, white powder known as sodium chloride or table salt.

Why reducing power of elements increase, on moving down a group?

Which of the following is not a result of air pollution? A. Smog B. Breathing problems C. Global warming D. Soil erosion