When an atom that has no charge loses two electrons, it becomes a:

A: positive ion.

B: negative ion.

C: positive isotope.

D: negative isotope.

2 H2 + O2 → 2 H2O How many grams of H2O are produced when 2.50 moles of oxygen are used?

What is a simple chemical test that will distinguish calcite from non-carbonate minerals?

What is the primary difference between a hypothesis and a theory? A. A theory is supported by more data and observations than a hypothesis is. B. A hypothesis is falsifiable, but a theory has been proven to be correct. C.

18. Explain how an organism with a genotype Gg and an organism with the genotype GG could have the same phenotype. I

Air flows according to differences in thermal energy. If a warm air mass is located in the northeast United States and a cold air mass is located in the southwest United States, from which direction will the winds blow?

Are energy levels and orbitals the same thing?

Heating devices can be made by passing an electric current through a conductor of: high resistance low resistance high conductivity low conductivity

What is the element 3O2 name

Why sulphur used for food preservation?

How would a solution that is labeled 5.0 molar be similar to one labeled 5.0 molal?