In an oxidation-reduction reaction, the number of electrons lost is

(1) equal to the number of electrons gained

(2) equal to the number of protons gained

(3) less than the number of electrons gained

(4) less than the number or protons gained

Sodium Carbonate was added to solution G with a p. H value of 1.5 ldentify the observation that was made and explain

Why did construction of the Panama Canal become more important to the United States after the Spanish-American War? (1) Congress realized that the key threat to national security came from South America.

The mass number of an atom is the sum of the atomic number and the number of ...

How is the sun the major source of energy in the water cycle? Group of answer choices It provides the energy to condense atmospheric water vapor into rain. It provides the energy to create winds that blow air masses across the Earth.

Write an equation that represents the action in water of rubidium hydroxide as an Arrhenius base.

All the isotopes of a given atom have (1) the same mass number and the same atomic number (2) the same mass number but different atomic numbers (3) different mass numbers but the same atomic number (4) different mass numbers and different atomic

A 2.40 L volume of air has a pressure of 101.7 kPa. If initially the pressure of the air was 101.01 kPa, what was the initial volume of air? Assume all other properties remain constant.

Water has a large K, value. True False

What mass of CO2 will sublimate given 500 kJ of energy at room temperature? (ΔHsub=26.1kJmole)

A sample of helium, at 20 °c, occupies a volume of 3.17 l at a pressure of 6.21 atm. what volume does this helium sample occupy if the pressure is reduced to 5.57 atm while maintaining the temperature at 20 °c?