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pentagon [3]
3 years ago
9

2. A car travels at 65 miles/hr for 4.5 hours from Houston to Dallas. What is the

Chemistry
1 answer:
JulsSmile [24]3 years ago
4 0
292.5 miles because 65x4.5=292.5
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Is there a picture or smth?

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Suppose a thermometer has marks at every one degree increment and the mercury level on the thermometer is exactly between the 25
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If there is no net force on an object, then the object will
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3 years ago
How many grams of NaCl are in 3.5 mol of NaCl? Also, how many moles of NaCl are in 150 g of NaCl?​
alexandr402 [8]

Answer:

204.5505 grams

2.5666 moles

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For the first question, multiply 3.5 (# of moles) by 58.443 (g/mol for NaCl).

58.443 * 3.5

<em>I'll distribute 3.5 into 58.443.</em>

(3.5 * 50) + (3.5 * 8) + (3.5 * 0.4) + (3.5 * 0.04) + (3.5 * 0.003)

175 + 28 + 1.4 + 0.14 + 0.0105

203 + 1.4 + 0.14 + 0.0105

204.4 + 0.14 + 0.0105

204.54 + 0.0105

204.5505 grams

There are 204.5505 grams in 3.5 moles of NaCl.

For the second question, divide 150 (# of grams) by 58.443 (g/mol for NaCl). I'll convert both into fractions.

150/1 * 1000/58443

150000/58443

2.56660336 moles

2.5666 moles (rounded to 4 places to keep consistency with the first answer) are in 150 grams of NaCl.

6 0
3 years ago
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