What must happen in a chemical reaction? A. Energy is created B. Energy is transferred. C. Atoms are destroyed. D. Energy is destroyed

What will happen to the rates of the forward and reverse reactions when a catalyst is added?

What is the number of electrons shared between the atoms in a molecule of nitrogen N2?

How would you calculate the % yield of hydrogen if 40.0 grams of magnesium react with an excess of nitric acid producing 1.70 grams of hydrogen gas. mg + 2hno3 → mg (no 3) 2 + h?

Explain how the combustion of coal results in acid rain

The granite statue of a hero in the local park is discolored. Your friend suggests that the rain will clean the statue. Do you agree? Explain your response

What is a light-year? A. the distance light travels in one earth year B. the distance light travels from the sun to the earth C. the distance light travels in one orbit of the moon D. the time it takes light to travel across the universe

What's is a logical way that you could begin to investigate why your tire had low air pressure?

after balancing the redox equation FeCl3+Zn--->ZnCl2+Fe, what are the coefficients, in order from left to right?

Aluminum oxide, Al2O3, is used as a filler for paints and varnishes as well as in the manufacture of electrical insulators. Calculate the number of moles in 47.51 g of Al2O3.

What volume of 2.00 m must be added to 150.0 ml of 1.00 m chloroacetic acid to produce a buffer solution having a ph of 3.30?