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andrey2020 [161]
2 years ago
14

Which statement is true? Postively charged objects attract other positively charged objects negatively charged objects attract o

ther negatively charged objects
Chemistry
1 answer:
ANEK [815]2 years ago
8 0

Answer:

Explanation:one is true because if it is positiveit would not be attracting it would be sepperating

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A main group metal was studied and found to exhibit the following properties:
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3 years ago
8. What volume (ml) of a 5.45 M lead nitrate solution must be diluted to 820.7 ml to make a
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212 ml of lead nitrate is required to prepare a dilute solution of 820.7 ml of lead nitrate.

Answer:

Option A.

Explanation:

Similar to Avagadro's law, there is another law termed as dilution law. As the product of volume and normality of the reactant is equal to the product of volume and normality of the product from the Avagadro's law. In dilution law, it will be as product of volume and concentration of the solute of the reactant is equal to the product of volume and concentration of solution.

C_{1} V_{1} =C_{2} V_{2}

So, as per the given question C1 = 5.45 M of lead nitrate and V1 has to be found. While C2 is 1.41 M of lead nitrate and V2 is 820.7 ml.

Then, (5.45*V_{1} ) = (820.7*1.41)

V_{1}=\frac{820.7*1.41}{5.45}=  212.33 ml

So nearly 212 ml of lead nitrate is required to prepare a dilute solution of 820.7 ml of lead nitrate.

3 0
2 years ago
Which of these can be mined from earth and used as an energy source?
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A ______________________ is the distance from one compression to the next compression in a longitudinal wave.
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