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nydimaria [60]
3 years ago
13

A train travels 380 miles in 5 hours 15 minutes. Calculate its average speed.

Chemistry
1 answer:
Assoli18 [71]3 years ago
3 0
Average speed is 72.5
5 hours x72.5=362.5 and add 1 /4 of
72.5=18.12 . 362.5+18.12=380.62
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How long is the Mississippi river?
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3 years ago
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2-18

Explanation:

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7 0
3 years ago
Name three examples of how the atom has changed since Rutherford's discovery of the nucleus .
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Answer:

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8 0
2 years ago
Suppose you need to prepare 136.9 mL of a 0.315 M aqueous solution of NaCl.
Varvara68 [4.7K]

Answer:

2.52 g NaCl

Explanation:

(Step 1)

To find the mass, you first need to find the moles NaCl. This value can be found using the molarity ratio:

Molarity = moles / volume (L)

After you convert mL to L, you can plug the given values into the equation and simplify to find moles.

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Molarity = moles / volume

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(Step 2)

Now, you can use the molar mass to convert moles to grams.

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Molar Mass (NaCl): 58.443 g/mol

0.0431 moles NaCl           58.443 g
------------------------------  x  -------------------  =  2.52 g NaCl
                                            1 mole

4 0
2 years ago
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