Which is true about mechanical waves

A. It must travel in empty space

B. Both sound and light are examples.

C. It must have a medium

D. It can travel in a vacuum.

The heat of a reaction may be found with the equation q=mcΔT. A hot pot is set on a 2.51 kg slab of granite. The temperature of the granite increases from room temperature, 23.5°C, to 98.6°C.

Suppose 0.410 kg of hexane are burned in air at a pressure of exactly 1 atm and a temperature of 13.0 °C. Calculate the volume of carbon dioxide gas that is produced. Round your answer to 3 significant digits.

Which substance has the lowest [H+] concentration but is still considered an acid? milk blood gastric fluid household lye

A neutral atom contains 12 neutrons and 11 electrons. The number of protons in this atom is (1) 1 (3) 12 (2) 11 (4) 23

What things can water do while in the gaseous phase?

A piece of solid carbon dioxide, with a mass of 21.0 g, is placed in an otherwise empty 4.60 L container at 25°C. What is the pressure in the container after all the carbon dioxide vaporizes?

What is the volume of 1 mile of gas at a standard temperature and pressure

Next to each formula, write the number of atoms of each element found in one unit of the compound

A particular atom has 58 protons and 82 neutrons. what are the atomic number, mass number, and periodic table symbol of this isotope?

Chemicals that are able to reduce activation energy in a reaction and speed the reaction rate are a. inhibitors. b. reactants. c. products. d. catalysts.