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mixas84 [53]
3 years ago
14

Density is defined by the equation d = m/v. Calculate the density of the wooden block, the rock, and the water by dividing the m

ass of each object by its volume.
Chemistry
1 answer:
Debora [2.8K]3 years ago
5 0

Answer:

Density, d = 8.92 g/mL

Explanation:

Let mass of the wooden block, m = 46.83  g

The volume of the object, V = 5.25 mL

We need to find the density of the wooden block. The density of an object is given by its mass per unit volume.

density = mass/volume

d=\dfrac{46.83\ g}{5.25\ mL}\\\\=8.92\ g/mL

So, the density of the wooden block is 8.92 g/mL.

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Answer:

1.5x 10^24

Explanation:

for every 1 mol there are 6.02 x 10^23 molecules

2.5 mol x 6.02 x 10^23

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1 mol

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(C6H6) can be biodegraded by microorganism. if 30 mg of benzene is present, what amount of oxygen required for biodegradation, n
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Answer:

36.92 mg of oxygen required for bio-degradation.

Explanation:

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Mass of benzene = 30 mg = 0.03 g (1000 mg = 1 g )

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According to reaction 5 moles of benzene reacts with 15 moles of oxygen gas.

Then 0.0003846 mol of benzene will react with:

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Mass of 0.0011538 moles of oxygen gas:

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36.92 mg of oxygen required for bio-degradation.

4 0
3 years ago
Is a 3.3% solution dilute or concentrated?<br><br><br><br> Dilute<br><br><br><br> Concentrated
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Answer:

Dilute

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A concentrated solutions is a one which has relatively large amount of dissolved solute in the solution whereas a dilute solution is a one which has relatively lower concentration of dissolved solute.

In the given solution there is only 3.3% of solute. So, we can say that the given solution is a dilute solution. However, these terms are relative.

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