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irina [24]
3 years ago
11

PLEASE PLEASE PLEASE HELP ME CHEM! DUE IN 10 MINS!! 20 POINTS (SPAM COMMENTS WILL BE BLOCKED) GIVING OUT BRAINLIEST

Chemistry
1 answer:
geniusboy [140]3 years ago
8 0

Answer:

Natrium oxide

4 Na atoms

2 O atoms

Fluoride

6 F atoms

Lithium sulfate

8 Li atoms

16 SO atoms

Calcium

2 Ca atoms

Aluminum hydroxide

2 Al atoms

3 OH atoms

Manganese sulfate

2 Mn atoms

12 SO atoms

Cuprum chloride

1 Cu atom

2 CI atoms

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 <span>Calculating average atomic mass is exactly like calculating a weighted average. Perform the following calculation: 

(mass1)(percentage1) + (mass2)(percentage2) = average atomic mass 

(35.0)(0.75) + (37.0)(0.25) = average atomic mass 

Make sure your percentages are in decimal form for this calculation. 

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