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25 Cards in this Set

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How many atoms are in each of the following.

0.230 g Pb
0.0066888 x 10 (23rd) atom

6.69 x 10 (20th) atom
how many mole of each elemnt in 0.250 molK2 Cr04
0.0250 mol K2Cro4x 2 molK
calculate the number of moles of each element in 1.25 mole glucose (C6H12O6)
9.04x10 24th atom/oxygen
How many moles are in
3.75 x10(24th) molecules CO2
.623x 10(1st) = 6.23
molecules CO2
calculate the molar mass of acetic acid (CH3OOH)
C 2x 12 =24
H 4 x 1 =4
O 2 x 16= 32
____________
60
How many atoms are in the following:
45.6 g Si
9.77 x 10 (23rd) atoms
what mass of sodium chloride contains 4.59 x 10 24 form. units
446g
4046 x 10 2nd g
what is the mass of 4035x10-2 moles of zinc Chloride (znCl2)
Zn=65.4
Cl=35.5
_______
100.9
what mass of sodium chloride contains 4.59 x 10 24 form. units
446g
4046 x 10 2nd
Determine the # of moles present
2206g AgNo3 x 1/170. = 0.13 mole

Ag 1x 10=108
N 1 x 14.0 = 14
O 3x 16.o=48
____________
170.g/mol
How many moles are in:
5.75 x 10(24th)
0.955 x 10(1) = 9.55 Mo Al
Determine the number of moles of Chloride ion in:
2.50 mol ZnCl2
3.01 x 10(24th) ion Cl
How many atoms in:
4.56 x 10 -2 g sodium
2.4608 x 10(25)
Determine the mass in grams of 125 mol of Neon?
1.19 x 10(21st)atoms
Calculate the mass in grams of:

2.56 x 10 -3 moles of iron
143 x 10 -3g Fe

*1.43 g Fe*
Calculate the number of moles of each element in 1.25 mole glucose(C6 H12 O6)
9.04 x 10(24th)atoms/22H
find the molar mass (NH4)3 PO4
N=3x14=42
H=12x1=12
P=1x31=31
O=4x16=64
_________
149g/mole
what is the mass of 3025 mole HeSo4
H 2x 1.01
S 1x32.1 = 32.1
O 4x16.o= 64.0
______________
98.12


318.g/HeSO4
Determine the mass in grams of 125 mol of neon.
2525g Ne
__________

1 mole Ne

* 2.53 x 10 (3rd) g Ne *
find the molar mass of
CaCl 2
110.984

Ca=1x40.078=4.078
Cl=2x35.453=70.906
What is the mass in grams?
6.69 g pb
determine the molar mass of Silver Nitrate.
AgNo3

Ag 1x108=108
N 1x14=14
O 3x16=48
_________
170g/mole AgNO3
How many moles of titanium are contained in 71.4 g
1.49 mol Ti
determine the molar mass of Silver Nitrate.
AgNo3

Ag 1x108=108
N 1x14=14
O 3x16=48
_________
170g/mole AgNO3
how many mole of each elemnt in 0.250 molK2 Cr04
0.0250 mol K2Cro4x 2/1 mol K