Which of the following is an example of a compound?

H2O

Na

Cl

O

Which of the following best describes bases? A. They feel slippery and taste sour. B. They turn red litmus paper blue and react with metals. C. They taste bitter and react with carbonates. D. They turn red litmus paper blue and taste bitter.

Identify five items around your home that use SI units of measurement

What is produced when a base neutralizes an acid? a. hydrogen gas b. water and salt c. a solution with a ph of 1 d. a solution with a ph of 14

What mass of pcl5 will be produced from the given masses of 26.0 g of p4 and 50.0 g of cl2?

The energy of colored light increases in the order red, yellow, green, blue, violet. List the metallic elements used in the flame tests in increasing order of the energy of the light emitted

1 75 ml of lemon juice are added to 50 ml of water. What is the percent by vo of the solute?

How many moles of tungsten atoms are in 4.8 x 1025 atoms of tungsten?

At what speeds do you criuse down the track of a roller coaster

A sample of hydrogen gas is mixed with water vapor. The mixture has a total pressure of 755 torr and the water vapor has a partial pressure of 24 torr. What amount (in moles) of hydrogen gas is contained in 1.55 L of this mixture at 298 K?

Both equation I and II are balanced, but equation II is the correct way to write the balanced equation. Why do you think this is? (Hint: Think fractions.) I) 2 SnO2 + 4 H2 → 2 Sn + 4 H2O II) SnO2 + 2 H2 → Sn + 2 H2O