An irregularly stone was lowered into a graduated cylinder holding a volume of water equal to 2.0 mL. the height of the water rose to 7.0 mL. if the mass of the stone was 25g, what was it's density

What is the empirical formula of a compound which consists of 89.14% au and 10.80% o?

Which of the following is the best indication that a chemical change has taken place? a. The matter changes color. b. A mixture separates into layers. c. The change is reversible. d. The shape of the substance changes.

Inertia is the tendency of an object to resist motion. True / False

A fuel has 30.43% nitrogen and 69.57% oxygen. Find the molecular formula of the compound if it has a mass of 92 grams per mole A. NO B. N2O4 C. NO2 D. N4O8

What is the chemical equation for ethyl alcohol?

What happens to atomic radius down a group?

In the calvin cycle, why are fewer than six rubp molecules required to fix six molecules of co2?

An atom that loses an electron is called a?

Which family on the periodic table contains elements that already have the octet in their valence energy level? a:family 1 b:family 13 c:family 15 d:family 18?

A scientist measures the pH of some rain water and finds that it is acidic. Which pH corresponds with the acidic quality of the rain water? A. 6 B. 7 C. 8 D. 9