A solution is made containing 22.8 g of magnesium nitrate per 325 g of water. What is the weight / weight % or percent by mass of the solute?

The speed of a motorcycle increases from 10 kilometers per hour to 50 kilometers per hour in 9 seconds. What is its acceleration?

When you inflate a raft with air, the air expands to fill the raft and takes the shape of the raft. Why does this occur? A. Gases have a fixed volume but not a fixed shape. B. Gas particles are close together but can freely move past one another. C.

Which is the most reducing agent in the periodic table? ... ?

Atomic radii decrease, moving from left to right across a period. As a result, the electrons become closer to the nucleus.

An example of an extensive property of matter is

The density of a substance with a mass of 48 grams and a volume of 3 ml is what

An atom of beryllium (m = 8.00 u) splits into two atoms of helium (m = 4.00 u) with the release of 92.2 kev of energy. if the original beryllium atom is at rest, find the kinetic energies and speeds of the two helium atoms

The most penetrating neclear radiation is

Certain object has a mass of 60 g and a volume of 32.6 cm³ what type of objects is the density

Which of the following statements is true? A. A producer usually obtains food by hunting other organisms. B. Humans that prepare their own meals are producers. C. A producer must be a plant. D. Consumers depend upon producers for food.