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Zina [86]
3 years ago
12

Sarah's class is studying soils. Her teacher, Ms. Jones, stated that plants will growth in any soil type. Students in Sarah's cl

ass performed an experiment to see if Ms. Jones' statement is true. When they started the experiment, the students used the same type of plants, and all of the plants were the same size. Sunlight, amount of water, and air temperature were the same for all pots; only the soil type was changed. The results are seen in the table. Ms. Jones was partially correct: all the plants DID grow but not at the same rate. What conclusion can be drawn from the three test pots of soil?
A)The bigger the soil particle size, the better the plant growth.

B)Plants grow best in soils that are a mixture of sand, clay, and loam.

C)The smaller the soil particles, the more water and air available for plant growth.

D)Sandy holds water for short periods of time; low water means less plant growth.
Chemistry
2 answers:
AnnZ [28]3 years ago
7 0
The answer in c. I think this because it’s the most logical answer, and based on my experience with plants, the smaller the soil particles, the more air and water is available! I hope this helps:)
ivanzaharov [21]3 years ago
4 0

Answer: C)The smaller the soil particles, the more water and air available for plant growth.

Explanation:

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If 200 g of water is heated from 20 C to 40 C, then what is the heat added in kilocalories (same as food calories)?
Maslowich

Answer: 4Kcal

Explanation:

H= mcø

M=200g

C= 1 cal/g/°c

Ø= 40-20=20°c

H= 200*1*20= 4000calories= 4Kcal

8 0
3 years ago
When the number of protons and electrons are the same the atom is
belka [17]

A.)Neutral. Since amount of protons and electron are equal and amount of protons cannot be changed so it is stable or neutral.

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The average atomic mass of Boron: 10.431 amu

<h3>Further explanation   </h3>

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.  

So Isotopes are elements that have the same Atomic Number (Proton)  

Atomic mass is the average atomic mass of all its isotopes  

In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu  

Mass atom X = mass isotope 1 . % + mass isotope 2.%  + ...

The average atomic mass of boron :

\tt avg~mass=0.8474\times 10.0129+0.1526\times 11.0093\\\\avg~mass=10.431~amu

3 0
3 years ago
When solutions of silver nitrate and sodium chloride are mixed, silver chloride precipitates out of the solution according to th
kipiarov [429]

The concentration of the sodium chloride would be 0.082 M

<h3>Stoichiometric calculations</h3>

From the equation of the reaction, the ratio of AgCl produced to NaCl required is 1:1.

Mole of 46.6 g AgCl produced = 46.6/143.32 = 0.325 moles

Equivalent mole of NaCl = 0.325 moles.

Molarity of 0.325 moles, 3.95 L NaCl = mole/volume = 0.325/3.95 = 0.082 M

More on stoichiometric calculations can be found here: brainly.com/question/27287858

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3 0
2 years ago
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A chunk of copper has a volume of 1.45 mL and a mass of 12.93 grams. What is the density of the chunk of copper?
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Answer:

Density = 8.92 \ g/mL

Explanation:

The equation for density is:

Density = \frac{mass}{volume}

We plug in the given values:

Density = \frac{12.93 \ g}{1.45 \ mL}

Density = 8.92 \ g/mL

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2 years ago
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