Is this reaction endothermic or exothermic

d) NH4NO3 (s)  NH4 + (aq) + NO3 - (aq) [Note, this is the reaction that takes place in a cold pack]

A beta particle is a fast moving electron that is emitted when a neutron in an unstable nucleus converts into a proton. True False

Our sun is A) a very small star. B) a very large star. C) a medium-sized star. D) not actually a star at all.

What type of bond between water molecules pulls them into this tight ball?

If i have 17 moles of gas at a temperature of 67c, and a volume of 88.89 liters what is the pressure of the gas

Identify one type of electromagnetic energy that has a shorter wavelength than green light.

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