chem test 4 Flashcards
1
Q
avogadro’s number
A
6.02 x 10 ^ 23
2
Q
how many atoms is in a mole of carbon?
A
6.02 x 10 ^ 23
3
Q
how many atoms are present in 2.5 moles of carbon?
A
2.5 mol C x 6.02 x 10 ^ 23 =
1.51 x 10 ^ 24
4
Q
1 mol of C is _____g/mol
A
12
5
Q
1 mol of any atom is equal to its______
A
AMU
6
Q
2 mol of N is _____ g/mol
A
28
7
Q
what chemical reaction is this:
A + B = AB
A
synthesis (combination)
8
Q
what chemical reaction is this:
AB = A + B
A
Decomposition
9
Q
what chemical reaction is this:
AB + C = AC + B
A
single replacement (single displacement)
10
Q
what chemical reaction is this:
AB + CD = AD + BC
A
double replacement (double displacement)
11
Q
what chemical reaction is this:
CH + O2 = CO2 + H2O
A
combustion
12
Q
catalyst
A
substance that speeds up a reaction
13
Q
chemical equation
A
represents a chemical reaction
14
Q
A
