When an oxygen atom forms an ion, it gains two electrons. What is the electrical charge of the oxygen ion?

A.

+2

B.

-1

C.

+1

D.

-2

The shape of a planet's orbit is influenced by gravity. O True O False

When running a spectrum of a neat liquid, what are problems that may arise when: a. using a low-viscosity liquid? b. using a viscous liquid?

What does la chateliers principle state

The first stable compound produced from co2 in the light-independent reaction is

What lightens stains better vinegar or lemon juice also what is the hypothesis for it

When magnesium combines with oxygen, the reaction involves a. a conversion of protons into electrons. b. sharing of electrons between Mg and O. c. transfer of electrons from Mg to O. d. transfer of electrons from O to Mg.

The activation energy for the reaction no2 (g) + co (g) ⟶no (g) + co2 (g) is ea = 100 kj/mol and the change in enthalpy for the reaction is δh = - 375 kj/mol.

What process transform solar energy into chemical energy?

When the reaction was carried out the calculated theoretical yield for water was 176 grams but the measured yield was 148 grams what is the percent yield

For an atom's electrons, how many energy sublevels are present in the principal energy level n = 4?