2. You have 2 m3 of a mineral ore sample. It has a mass of 1 * 104 kg. Calculate the density of the ore sample and express your results in g/cm3 with appropriate scientific notation.

Which element is classified as a noble gas at STP? hydrogen oxygen neon nitrogen

The pH of a solution is measured to be pH=3. what is true of this solution? A. the solution is a base B. the solution is neutral C. the solution is an acid D. the solution is neither an acid or a base

If the proper dosage of a drug is 2.0mg/kg of body weight, how many milligrams (mg) of the drug would a 110 lb individual need? (5%)

A significant limitation for early scientists studying the elements was

Which one of the following statements about absolute zero is correct? (a) At absolute zero, the volume of an ideal gas is zero. (b) At absolute zero, ideal gases freeze to give solids. (c) At absolute zero, solid and liquid water are at equilibrium.

Electric force is an A. attraction and repulsion between protons and electrons . B. attraction and repulsion between protons and neutrons. C. attraction and repulsion between neutrons and electrons.

A salt crystal has a mass of 0.18 mg. how many nacl formula units does it contain?

Which of the following is easist to accelerate? A. bowling ball B. tennis ball C. golf ball D. ping pong ball

Fish need at least 4 ppm dissolved o2 for survival. part a what is this concentration in mol/l?

How does a runoff get polluted.