How many moles of oxygen are produced when 8 moles of Al are produced?

What types of evidence do geologists usually study?

Describe the process by which ag + ions are precipitated out of solution

Which of these is a demonstration of a chemical change? A. ice melting into water B. wood becomes charred and black from burning C. water evaporates from a sugar solution, leaving behind sugar crystals D. a balloon suddenly popping

Which occurs when two fluorine atoms react to produce a fluorine molecule? (1) Energy is absorbed as a bond is broken. (2) Energy is absorbed as a bond is formed. (3) Energy is released as a bond is broken. (4) Energy is released as a bond is formed.

Why is carbon ideal for making different compounds?

Just as heat can denature enzymes, so can a change in the pH. Enzymes that normally work in an acidic environment in the body can become denatured if the pH becomes too alkaline.

In a reversible reaction, both the forward and reverse reactions take place A. at the same rate. B. at two different rates. C. at varying, unequal rates. D. under different experimental conditions.

Choose the element that would be the most reactive of the three.

Por qué dos iones sodio reemplazan un ion de calcio o de magnesio

How and when did scientists discover cells