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soldi70 [24.7K]
2 years ago
7

True or false and object can not be accelerating if it has constant speed

Chemistry
1 answer:
Mandarinka [93]2 years ago
6 0
True, if an object has constant speed that means the object isn’t increasing or decreasing in speed so it could not be accelerating.
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How many particles are there in 5.1 moles of NH4S02?
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Assuming that the concentration of sodium hypochlorite is 4.0% (w/v), calculate the molarity of the sodium hypochlorite solution
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We are told that the concentration of sodium hypochlorite is 4.0% (w/v). To calculate the molarity of the sodium hypochlorite solution, let us consider a sample volume of 0.1 liter. Since we are given a w/v (Percent of weight of solution in the total volume of solution) value, it means that there are 4 <span>grams of sodium hypochlorite per 100 mL of solution (0.1 liter). Molarity is measured in moles per liter. So we'll just convert the given 4 grams to moles using the molar mass.
</span><span>
4 grams</span>sodium hypochlorite * (1 mol sodium hypochlorite/ 74.44 g sodium hypochlorite) = 0.054 moles sodium hypochlorite

So we have 0.054 moles sodium hypochlorite  / 0.1 L solution
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Thus the molarity is 0.53 mol/L or just 0.53 M.


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Is 2h2 + o2 2h2o a balanced chemical equation?is it obeying the law of conservation of matter
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Yes, this is a balanced chemical equation, and it obeys the Law of Conservation of Mass.

A balanced chemical equation obeys the Law of Conservation of Mass if there are the <em>same numbers of each type of atom on each side of the reaction arro</em>w.

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Let’s check the numbers.

<u>Atom</u> <u>On the left</u> <u>On the right</u><u> </u>

  H             4                 4

  O             2                 2

We have the same numbers of H and O atoms on each side of the reaction arrow.

The equation is<em> </em>balanced and it obeys the Law of Conservation of Mass.

5 0
3 years ago
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