What can explode up out of a volcano 40 km in the air

If calcium carbonate (CaCO3) decomposes, what would the product of the reaction be?

Rutherford's gold foil experiment provided evidence for which of the following statements? There is a dense, positively charged mass in the center of an atom. Gold is not as dense as previously thought.

When a bond forms between two atoms A. protons are lost. B. neutrons are lost. C. energy is released. D. energy is absorbed.

Warm air rising and cold air sinking to replace it causes what phenomenon of a hurricane? the strong winds the strong water the circular motion the eye

What is thermal conduction? A. Heat transfer from one molecule to another B. Heat transfer around an insulation block C. Heat transfer through circulating currents D. Heat transfer through electromagnetic waves

Which of the following volumes is the smallest?

Which of these are common to all mammals? A: type of reproductive system, brain size, skin B: digestive system, heart lungs C: digestive system, number of toes, blood D: kidneys, liver, skeletal structure

Which explanation best compares the movement of particles in the three states of matter?

A steel tank with a volume of 9.583 L contains N2 gas under a pressure of 4.972 atm at 31.8 °C. Calculate the number of moles of N2 in the tank. a. 0.002 mol c. 0.525 mol b. 0.018 mol d. 1.90 mol

Is phosphorous an atom, element, or compound