Which TWO of the elements listed below would most like form a covalent bond?

Oxygen Hydrogen Carbon Magnesium

Explain the relationship between the dissociation of water and the ph of a particular aqueous solution.

How the atmospheric air can be used, besides our breathe?

Marley has a vegetable garden in her yard. During a storm heavy rain falls. The rain runs over the garden and some of the soil is washed away. Which term is best describes this movement of soil from one place to another? A. Erosion B. Discharge C.

Which energy transformation occurs when an electrolytic cell is in operation? (1) chemical energy → electrical energy (2) electrical energy → chemical energy (3) light energy → heat energy (4) light energy → chemical energy

Which of the following happens during a lunar eclipse? Select one: a. Earth casts a shadow on the moon. b. The moon casts a shadow on Earth. c. Earth stops revolving in its orbit. d. Earth starts revolving around the moon.

What is the temperature of 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals

5.2*10^26 molecules of ch4 in volume

Which of the following statements about igneous rocks is correct A. intrusive igneous rocks are formed when magma is called above the ground. B. Extrusive igneous rocks are formed when magma is cooled above the ground C.

The compound KOH is called

A balloon contains 1.00 mol helium gas at STP. What will the volume of the balloon be if the pressure increases to 2.00 atm?