How many significant figures should be present in the answer of the following calculations: 2.5 x 1.25 x 3.5/2.01

Think about a neutral magnesium atom. Then think of a magnesium ion with a 2+charge. How are these two alike? How are they different? Be sure to use the terms proton, neutron, and electron in your answer.

In 1989, the Exxon Valdez spilled nearly 42,000,000 liters of oil into Prince William Sound, Alaska. How would this spill be classified? Abiotic environmental Biotic environmental Genetic Pathogenic

Which element has a partially filled F orbital? Sm Os Ba Bi

Which of the following types of fossils is most commonly associated with wood? Group of answer choices imprint fossil dinosaur fossil trace fossil petrified fossil

Calculate the vapor pressure of a solution made by dissolving 109 grams of glucose (molar mass = 180.2 g/mol in 920.0 ml of water at 25 °c. the vapor pressure of pure water at 25 °c is 23.76 mm hg. assume the density of the solution is 1.00 g/ml.

Why must you wear safety glasses at all times

How do you classify solutions as acidic, basic, or neutral?

Which statements describe abiotic factors in an environment?

A ball rolling across the ground in Death Valley will slow and eventually stop. Why? - the ball's kinetic energy evaporates. - the ball's force is destroyed. - the friction of the ball changed the force to negative ions.

Calculate ∆h0 for the following reaction. br2 ( g. → br2 (l) ∆hf0 br2 ( g. = 30.91 kj/mol; ∆hf0 br2 (l) = 0 kj/mol)