4 years ago

Do mechanical waves require a medium to travel through? 10 pts, and explain please.

1 answer:

8 0

Yes, because mechanical waves require an initial energy input, and without a medium energy cannot travel.

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Harlamova29_29 [7]

Answer: Molarity of $MgCl_2$ in the original sample was 1.96M

Explanation:

Molarity is defined as the number of moles of solute dissolved per liter of the solution.

$Molarity=\frac{\text{no of moles}}{\text{Volume in L}}$

${\text {moles of solute}=\frac{\text {given mass}}{\text {molar mass}}=\frac{186g}{95g/mol}=1.96$

Now put all the given values in the formula of molarity, we get

$Molarity=\frac{1.96}{1.00L}$

$Molarity=1.96mol/L$

Thus molarity of $MgCl_2$ in the original sample was 1.96M

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3 years ago

sergiy2304 [10]

Answer:

C-12 or C with a 12 superscripted on Upper left and 6 Subscripted on bottom left

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Isotopic notation

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3 years ago

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Answer:

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nata0808 [166]

Answer:

salt and water only

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neutralization reaction

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3 years ago

Gnom [1K]

Hello ur answer will be D, hope this helps :)

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2 years ago