Which of the following best describes a mole as used in chemistry?

A a simplification of mathmatics

B a salt dissolved in water

C a very large number of objects

D a measure of concentration

Which of the following is the correct electron configuration for titanium (Ti) ? 1s22s22p63s23p64s23d2 1s22s22p63s23p63d4 1s22s22p63s23p64s24p2

How do I know how many electrons an element has to gain and l ose to become stable

How to prove that a given colorless liquid is an acid

A sample of oxygen at room temperature occupies a volume of 500. l at 1.75 atm. what would be the volume of this gas at 2.50 atm at the same temperature?

Calculate the number of moles of o2 gas held in a sealed, 2.00-l tank at 3.50 atm and 25.0°c. how many moles would be in the tank if the temperature was raised to 49.0°c and the pressure remained constant (trick question) ?

Why is crushed ice used for snow cones

A gas mixture contains CO, Ar and H2. What is the total pressure of the mixture, if the mole fraction of H2 is 0.35 and the pressure of H2 is 0.58 atm?

Student follow up The ionic equation for the reaction between zinc and sulfuric acid is. Zn (s) + 2H (aq) - - Zn" (aq) + H2 (g) a State what has been oxidised in this reaction. Explain your answer in terms of electrons.

What is required for reactants to form bonds? energy output energy input equilibrium exchange reaction

Check out the list of scientific names. These names all represent animals. These are all animals but they cannot reproduce to produce fertile offspring with each other.