Which reactions are exothermic?

Microwave ovens emit microwave energy with a wavelength of 12.8 cm. What is the energy of exactly one photon of this microwave radiation?

What function is most important the heart or the brain

Gimme more info on natural resources

Which of the following best describes plasma? A) the most abundant state of matter in the universe B) is a special type of liquid C) is not found on Earth

Consider the following equilibrium systems: A⇌2B ΔH o = 20.0 kJ/mol Reaction 1 A+B⇌C ΔH o = -5.4 kJ/mol Reaction 2 A⇌B ΔH o = 0.

The atomic mass of fluorine in 19.0 amu, so the molar mass is?

A rod shaped organism with no nucleus commonly found in Garbage will most likely belong to which kingdom

Alka-Seltzer is a solid mixture of two substances, sodium bicarbonate (NaHCO3) and citric acid (H3C6H5O7). The substances react to form water, carbon dioxide (CO2), and Na3C6H5O7.

Four properties of water are listed. 1. It is colorless and odorless in its pure form. 2. It reacts with metals to form metal hydroxide and hydrogen gas. 3. When heated to 100 °C, water evaporates. 4. It decomposes to form hydrogen and oxygen.

Water is A. Acidic B. Basic C. Neutral