Which formula represents a compound?

(1) Ca

(2) Cr

(3) CO

(4) Co

Calculate the volume of liquid in the tank sketched below. Give your answer in liters, and round to the nearest 0.1 L. 5.1 cm 7.0 cm x ? 0.112 m

When your heart doesn't know what it wants ... what do you do?

In a diagnostic test for leukemia, a person receives 3.9 mL of a solution containing selenium-75. If the activity of the selenium-75 is 40 μCi/mL, what dose, in microcuries, does the patient receive?

Suppose you wanted to find out how many milliliters of 1.0 m agno3 are needed to provide 169.9 g of pure agno3? what is step 1 in solving the problem? calculate moles agno3 needed what is the molar mass of agno3? 169.

State the reason that soft drinks is a mixture and water is a compound?

What happens to the velocity of a sound wave in air if the temperature of the air increases

Determine the [oh-] concentration of a 0.741 m koh solution at 25°c.

In the lab, students decomposed a sample of calcium carbonate by heating it over a Bunsen burner and collected carbon dioxide according to the following equation: CaCO3 (s) CaO (s) CO2 (g) (a) How many mL of carbon dioxide gas were generated by the

J. J. Thomson A) Electrons are in orbital levels. John Dalton B) Atoms are the smallest unit of an element. Ernest Rutherford C) Electrons are scattered within the atom. Niels Bohr D) Protons are at the center of an atom.

Which answer best describes an alloy