How many valence electrons are in carbon?

to prepare 100 mL of a 0.5 M solution of CuSO4 using water as the solvent. Calculate the amount of solid needed.

What does this mathematical expression mean? D P Density equals pressure. Density is directly related to pressure. Density is indirectly related to pressure. Density is inversely related to pressure.

Whitney's lung capacity was measured as 3.2 l at a body temperature of 37 ∘c and a pressure of 747 mmhg. how many moles of oxygen is in her lungs if air contains 21% oxygen?

A natural charge by an atom is caused by which of the following conditions? A.) presence of neutrons in the nucleus B.) balance in the number of protons and neutrons C.) balance in the number of electrons and protons D.

Which set of procedures and observations indicates a chemical change? A) Ethanol is added to an empty beaker and the ethanol eventually disappears. B) A solid is gently heated in a crucible and the solid slowly turns to liquid.

What are the three parts that make up Earth's mantle?

which pattern is a characteristic of a graph of exponential growth A straight line B rises sharply on the right C A shape D rises sharply on the left

What can be determined from the frequency and wavelength of a wave?

What is the basic definition of carbohydrates

1. Describe a few of the properties of ozone and compare these to the properties of diatomic oxygen.