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Makovka662 [10]
3 years ago
15

I needa know the first one help✋

Chemistry
1 answer:
Anit [1.1K]3 years ago
4 0

Answer: Soil permeability is the property of the soil to transmit water and air and is one of the most important qualities to consider for fish culture. A pond built in impermeable soil will lose little water through seepage. The more permeable the soil, the greater the seepage.

Explanation:

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What is the symbol for the element that has 12 protons,14 neutrons, and 12 electrons
Citrus2011 [14]

Answer:

mg

Explanation:

6 0
3 years ago
1. If a solution of sodium chloride has 22.3 g of
lina2011 [118]

<u>We are given:</u>

Mass of NaCl in the given solution = 22.3 grams

Volume of the given solution = 2 L

<u></u>

<u>Number of Moles of NaCl:</u>

We know that the number of moles = Given mass / Molar mass

Number of moles = 22.3 / 58.44 = 0.382 moles

<u></u>

<u>Molarity of NaCl in the Given solution:</u>

We know that Molarity of a solution = Moles of Solute / Volume of Solution(in L)

Molarity = 0.382 / 2

Molarity = 0.191 M

<em />

7 0
3 years ago
You hold a handful of rocks and a handful of feathers. The rocks feel heavier than
Vlada [557]

Answer:

a) The rocks have more mass, and therefore contain more matter, than the

feathers.

Explanation:

6 0
3 years ago
What is the force of a 12 kg object that is accelerating at a rate of 6 m/s2?
exis [7]

Answer:

72N

Explanation:

Force = mass × acceleration

= 12 × 6

= 72N

5 0
3 years ago
Read 2 more answers
How many grams of CaF2 would be needed to produce 1.23 moles of F2?
NemiM [27]

We see from the chemical formula itself that there is 1 mole of F2 for every 1 mole of CaF2, hence the number of moles of CaF2 is also:

moles CaF2 = 1.23 moles

 

The molar mass of CaF2 is 78.07 g/mol, so the mass is:

mass CaF2 = 78.07 g / mol * 1.23 mol

<span>mass CaF2 = 96.03 grams</span>

5 0
3 years ago
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