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Shtirlitz [24]
3 years ago
13

Just the first one please

Chemistry
1 answer:
a_sh-v [17]3 years ago
3 0

Answer:

True

Explanation:

Magnetism is a force that is exerted by magnets, whether it be to attract or repel. So, yes. I believe the answer is "true".

Please let me know if you help with anything else. :)

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300 moles of sodium nitrite are needed for a reaction. the solution is 0.450 m. how many ml are needed?
miv72 [106K]

Answer:

\boxed{\text{667 000 mL}}

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\text{Molar concentration} = \dfrac{\text{moles}}{\text{litres}}\\\\c = \dfrac{n}{v}

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Calculation:

\begin{array}{rcl}0.450 & = & \dfrac{300}{V}\\\\0.450V& = & 300\\\\V & = & \dfrac{300}{0.450}\\\\V & = & \text{667 L} =\textbf{667 000 mL}\end{array}\\\text{The volume of solution needed is }\boxed{\textbf{667 000 mL}}

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