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Sergeu [11.5K]
3 years ago
5

Where should the author of a case study introduce the central question of the text?

Chemistry
2 answers:
Contact [7]3 years ago
8 0

Answer:

b!

Explanation:

Shtirlitz [24]3 years ago
7 0

Answer:

B. at the beginning  

Explanation:

i took the test

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2 years ago
A chemist must dilute 97.1 ml of aqueous magnesium fluoride solution until the concentration falls to 389 microMolarity . He'll
mojhsa [17]

Answer:

0.302L

Explanation:

<em>...97.1mL of 1.21m M aqueous magnesium fluoride solution</em>

<em />

In this problem the chemist is disolving a solution from 1.21mM = 1.21x10⁻³M, to 389μM = 389x10⁻⁶M. That means the solution must be diluted:

1.21x10⁻³M / 389x10⁻⁶M = 3.11 times

As the initial volume of the original concentration is 97.1mL, the final volume must be:

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0.302L

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3 years ago
Please help me get the answer to bothe a and b​
neonofarm [45]

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If a metal and metal solution react, the more reactive metal will displace the less reactive metal from solution. If the metal in solution you start with is formed from a more reactive metal than the metal to be added, no reaction will occur.

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2 years ago
How many neutrons dose O^-2 have
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How much NaNO3 can I dissolve in 400 grams of water at 283 K?
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