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How many atoms are in 9 moles of hydrogen

if a light particle and a heavy particle are both at the same temperature do they have the same average energy?

How do bears, birds, invertebrates and trees each benefit from the presence of salmon?

Why does a chemical equation need to be balanced to support the law of conversation of matter?

What is the difference between the independent variable and the control?

What jobs involve chesmistry

Think about a neutral magnesium atom. Then think of a magnesium ion with a 2+charge. How are these two alike? How are they different? Be sure to use the terms proton, neutron, and electron in your answer.

What subatomic particle is specifically responsible for combining the atoms together to form a new substance?

A chemist reported that 100 gallons of a gas were available in a laboratory. Which property of the gas did the chemist report?

Is the water density higher than the aluminum density