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likoan [24]
3 years ago
7

Working with one sample at a time, add water to the glass one tablespoon at a time. Water should soak the sample from the bottom

up. Count the number of tablespoons of water it takes to bring the water level up to the top of the sample. Record the amount in the chart.
Calculate the porosity of each sample using this formula, and record the results in the table. “Total sample volume” is the amount of soil, sand, or pebbles in the sample. A half cup is equal to 8 tablespoons.
% porosity = (amount of water added to sample ÷ total sample volume) × 100 Water Added to Sample
% Porosity

Pebbles
Enter your results here:
Soil
Enter your results here:
Sand
Enter your results here:
Chemistry
2 answers:
Vedmedyk [2.9K]3 years ago
7 0

Answer:

This is confusing

but if you still need help, you can search it online

Explanation:

MariettaO [177]3 years ago
3 0
Soil, sand, and pebbles ?
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Calculate the average atomic mass of a
Vesna [10]

Answer: 207.217 amu

Work:

203.973 amu *(0.014) = 2.855 amu

205.974 amu *(0.241) = 49.639 amu

206.976 amu *(0.221) = 45.741 amu

207.977 amu *(0.524) = 108.979 amu

2.855 + 49.639 + 45.741 + 108.979 = <em><u>207.217amu</u></em>

Explanation:

6 0
3 years ago
The atomic number is the same as the number of ________.
Zanzabum

Answer:

number of electrons

Explanation:

(happy to help)

5 0
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A 19-g piece of metal absorbs 186.75 joules of heat energy, and its temperature changes from 35°C to 175°C. Calculate the specif
slavikrds [6]

Answer:

0.0702J/g°C the specific heat capacity of the metal.

Explanation:m

Q=m\times c\times \Delta T=m\times c\times (T_{2}-T_{1})

where,

Q = heat absorbed by metal = 186.75 J

m_1 = Mass of metal= 19 g

T_1 = Initial  temperature of metal = 35^oC

T_2 =Final  temperature of metal = 175^oC

c = specific heat of metal= ?

186.75 J=19 g\times c\times (175^oC-35^oC)

c=\frac{186.75 J}{19 g\times (175^oC-35^oC)}

c=0.0702J/g^oC

0.0702J/g°C the specific heat capacity of the metal.

6 0
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egoroff_w [7]

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I think it's nitrogen I'm not really sure..

6 0
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How many atoms are in a teaspoon of salt
Dvinal [7]
Hundreds of them....hope it helps
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