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Vlad1618 [11]
3 years ago
13

Please answer this question to help me out.... 8TH GRADE SCIENCE.

Chemistry
1 answer:
son4ous [18]3 years ago
5 0

Answer:

3

Explanation:

The line has less bumps and goes slower then line two

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What volume (in L) of a 1.25 M
sleet_krkn [62]

Answer:

V1= 0.305L

Explanation:

To find the initial volume of 1.25M potassium fluoride needed to make tge dilution specified in the question, we can use: C1 × V1 = C2 × V2

Since the question wants the volume in litres, convert 455 mL to L

455/ 1000

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Now make the substitution

1.25 × V1 = 0.838 × 0.455

Rearrange to make V1 the subject

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\frac{0.838 \times 0.455}{1.25 }  = 0.305

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<span>In a sample of solid Ba(NO3)2 the ratio of barium ions to nitrate ions is would be one is to 2 or 1:2. Barium ion has a formal charge of positive two which means that it needs two ions which has a formal charge of negative one or 1 ion with the formal charge of negative two. However, for this case, it is bonded to a nitrate ion which has a formal charge of negative one. Therefore, it needs two nitrate ions so that for every 1 atom of barium ion, we need two ions of nitrate ions.</span>
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What combination of forces was the closest match? Why?
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Explanation:

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