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eimsori [14]
2 years ago
6

A mineral sample has a mass of 75 g. When the sample is dropped

Chemistry
2 answers:
Elena-2011 [213]2 years ago
5 0

Answer:

3.75 g/mL

Explanation:

Density can be calculated using the following formula:

Density = mass (g) / volume (mL)

You have been given the mass of the mineral sample (75 g). To find the volume, you need to determine the amount of space that the sample takes up when it is placed in the water. This can be done by subtracting the initial water volume from the final water volume.

Volume = Final - Initial

Volume = 40 mL - 20 mL

Volume = 20 mL

Now, you can calculate the density of the mineral sample.

Density = mass / volume

Density = 75 g / 20 mL

Density = 3.75 g/mL

Ainat [17]2 years ago
4 0

Answer:

Explanation:

Givens

The volume is the tricky part of this question. You are using the graduated cylinder to measure volume. The rise in the reading of the graduated cylinder = the volume of the sample.

Volume = 40 mL - 20 mL = 20 mL

Mass = 75 grams

Formula

Density = mass / volume

Solution

Density = 75 / 20 = 3.75

Answer

Density = 3.75

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The volume of 0.555M KNO3 solution would contain 12.5 g of solute iss 223 mL.

<h3>What is the relationship between mass of solute and concentration of solution?</h3>

The mass of solute in a given volume of solution is related by the formula below:

  • Molarity = mass/(molar mass * volume)

Therefore, volume of solution is given by:

Volume = Mass /molarity * molar mass

Molar mass of KNO₃ = 101 g/mol

Volume = 12.5/(0.555 * 101)

Volume = 0.223 L or 223 mL

In conclusion, the volume of the solution is obtained from the molarity of solution as well as mass and molar mass of solute.

Learn more about molarity and volume at: brainly.com/question/26873446
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What are the missing coefficients for the chemical equation <br> [ ] Ca + [ ] O2 → [ ] CaO
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{ \sf{[ 2] Ca_{(s)} + [1 ] O_{2(g)} → [ 2] CaO _{(s)}}}

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What is the name of the following compound - AgNO3 *
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Silver Nitrate

Explanation:

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Exercise while in space is important because it PREVENTS what?
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A sample of phosphonitrilic bromide, PNBr2, contains 2.01 mol of the compound. Determine the amount (in mol) of each element pre
nordsb [41]

Answer:

2.01 moles of P → 1.21×10²⁴ atoms

2.01 moles of N → 1.21×10²⁴ atoms

4.02 moles of Br → 2.42×10²⁴ atoms

Explanation:

We begin from this relation:

1 mol of PNBr₂ has 1 mol of P, 1 mol of N and 2 moles of Br

Then 2.01 moles of PNBr₂ will have:

2.01 moles of P

2.01 moles of N

4.02 moles of Br

To determine the number of atoms, we use the relation:

1 mol has NA (6.02×10²³) atoms

Then: 2.01 moles of P will have (2.01  . NA) = 1.21×10²⁴ atoms

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4.02 moles of Br (4.02 . NA) = 2.42×10²⁴ atoms

6 0
4 years ago
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