amount of substance (2)

Question 1

what to times dm3 to get to m3

Answer 1

10(-3)

Question 2

what to times cm3 to get to m3

Answer 2

10(-6)

Question 3

what to times kPa to get to Pa

Answer 3

10(3)

Question 4

what to times MPa to get to Pa

Answer 4

10(6)

Question 5

what to add to temp to get it to K

Answer 5

+273

Question 6

what is the ideal gas equation

Answer 6

PV = nRT

Question 7

what is the gas constant

Answer 7

8.31

Question 8

meaning of percentage yield

Answer 8

the percentage ratio of the actual yield of product from a reaction compared with the theoretical yield

Question 9

meaning of atom economy

Answer 9

measure of the amount of starting materials that end up as useful products

Question 10

meaning of Avogadro constant

Answer 10

number of atoms, molecules or ions in one mole of a given substance

Question 11

meaning of concentration

Answer 11

amount of substance per unit volume

Question 12

meaning of empirical formula

Answer 12

smallest whole number ratio of atoms of each element in a compound

Question 13

meaning of limiting reactant

Answer 13

the reactant that is completely used up since it limits the amount of product formed

Question 14

meaning of a mole

Answer 14

the mass of a substance containing the same number of units as there are atoms in exactly 12g of carbon-12

Question 15

meaning of molecular formula

Answer 15

the actual ratio of atoms of each element present in a compound

Question 16

relative atomic mass

Answer 16

the average mass of an atom of an element compared to 1/12th the mass of an atom of carbon-12

Question 17

relative molecular mass

Answer 17

the average mass of an molecule of an element compared to 1/12th the mass of an atom of carbon-12