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2 years ago

What on earth is the oxidation number of N in N2H4?

Chemistry

1 answer:

Levart [38]2 years ago

5 0

N₂H₄ :

N = - 2

H = + 1

2 * ( -2 ) + ( 1 * 4 ) = - 4 + 4 = 0

hope this helps!

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What is the voltage across a 100 ohm circuit element that draws a current of 1 A?

andrey2020 [161]

Answer:

8) 45 volt

9) 8 ohms

100 volt

Explanation:

using ohms law all through

V=IR

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Answer:

Explanation:

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3 years ago

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3 years ago

How many liters of 3.5 M solution can be made using 23 moles of LiBr *must show work to get credit*

MrMuchimi

Answer: 6.57 L of solution can be made.

Explanation:

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L. The formula used to calculate molarity:

$\text{Molarity of solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (L)}}$ .....(1)

Given values:

Molarity of LiBr = 3.5 M

Moles of LiBr = 23 moles

Putting values in equation 1, we get:

$3.5mol/L=\frac{23mol}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{23mol}{3.5mol/L}=6.57L$

Hence, 6.57 L of solution can be made.

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3 years ago