Based on their chemical formulas, which of these common substances is an

element?

A. Bleach (NaClo)

B. Silver (Ag)

C. Quartz (SIO2)

D. Marble (CaCO3)

Why is a kite flying in the sky an example of potential energy? A. The kite is constantly moving. B. The kite is being pushed by the winds. C. The kite is high above the ground. D. The kite is being pulled by a string.

The pH of a. 0727 M aqueous sodium cyanide, KCN, solution at 25 degrees C

4. Calculate the final concentration if water is added to 1.5 L of a 12 M NaOH solution to make 3.0 L of a diluted NaOH solution. Your answer

What property of water allows water to work as a universal solvent?

Metaloids definition

Consider the following thermochemical equation: C (s) + O2 (g) → CO2 (g) ΔH = - 393 kJ CO (g) + ½O2 (g) → CO2 (g) ΔH =

Two colorless solutions are mixed together. Bubbles form as the solution is stirred. Give TWO possible explanations for this result.

What is a light-year? A. the distance light travels in one earth year B. the distance light travels from the sun to the earth C. the distance light travels in one orbit of the moon D. the time it takes light to travel across the universe

What's is a logical way that you could begin to investigate why your tire had low air pressure?

after balancing the redox equation FeCl3+Zn--->ZnCl2+Fe, what are the coefficients, in order from left to right?