How many copper atoms are in this amount of copper?

What's the atomic number of an atom that has 20 protons and 20 neutrons

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

What is the difference in the electrons between a covalent and an ionic bond?

Why does pure iron not have many uses?

Which of the following characterizes the sodium-potassium pump? A) Sodium ions are pumped out of a cell against their gradient. B) Potassium ions are pumped into a cell against their gradient. C) The pump protein undergoes a conformational change.

What is it called when the state of matter that keeps its shape and volume when it's placed in a different container

A 0.1 m solution of which salt is the most basic? (a) nano3 (b) naclo4 (c) nahso4 (d) nahco

How to conduct electricity with light bulb and battery

A cup can hold 50 ml of water and has a mass of 25g. If each penny weighs 2g, how many pennies can it hold before it sinks in fresh water? Explain how you got your answer.

How many moles of FeO are produced if 8 moles of CuFeS, are consumed?