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cricket20 [7]
4 years ago
14

Each human skin cell has pairs of chromosomes.

Chemistry
1 answer:
Greeley [361]4 years ago
7 0

Answer:

a skin cell? In all the somatic cells of the body 23 pairs of chromosomes are present. They mean 46 chromosomes in total. In a skin cell of humans, 46 chromosomes are present(human diploid number).

Explanation:

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The theoretical yield for a reaction is 55.9 g LiCl. The actual yield is 24.6 g LiCl. What is the percent yield of the reaction?
xenn [34]
In chemical reactions, the actual yield is not the same as the expected yield . Actual yield is lower than the theoretical yield . Then we have to find the yield percentage. To see what percentage of the theoretical yield is the actual yield.
Percent yield = actual yield / theoretical yield x 100%
Percent yield = 24.6/55.9 x100%
Percent yield = 44%
7 0
3 years ago
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A container of gas is heated from 250 k to 303k. What is the new pressure if the initial pressure is 880kpa? (Assume constant vo
Anna [14]
So this is p1 over t1 = p2 over t2. So you do 880/250=x/303 and then cross multiply and divide
8 0
3 years ago
Calculate the amount of 0.1 M base needed to neutralize 10,000 liters of pH 6.0 water.
musickatia [10]

Answer:

0.1 liters of NaOH.

Explanation:

When the acid solution is neutralized we have:

n_{a} = n_{b}

C_{a}V_{a} = C_{b}V_{b}

Where:

n_{a}: is the number of moles of the acid

n_{b}: is the number of moles of the base

C_{a}: is the concentration of the acid

C_{b}: is the concentration of the base = 0.1 M

V_{a}: is the volume of the acid = 10000 L

V_{b}: is the volume of the base =?

The concentration of the acid can be calculated from the pH:

pH = -log([H^{+}])

[H^{+}] = 10^{-pH} = 10^{-6} M

Now, we can find the volume of the base:

V_{b} = \frac{C_{a}V_{a}}{C_{b}} = \frac{10^{-6} M*10000 L}{0.1 M} = 0.1 L

Therefore, the amount of NaOH needed to neutralize the solution is 0.1 liters.

I hope it helps you!    

8 0
3 years ago
Which reaction is endothermic? HCl + NaOH Right arrow. NaCl + H2O + 58 kJ 6CO2 + 12H2O + energy Right arrow. C6H12O6 + 6O2 + 6H2
satela [25.4K]

Answer:

6CO_2 + 12H_2O + Energy->C_6H_{12}O_6 + 6O_2 + 6H_2O

Explanation:

-An endothermic reaction is a chemical reaction that gains or absorbs heat from its surrounding in the form of heat.

-During the reaction, the temperature of the surrounding reduces.

-From the reactions given:

6CO_2 + 12H_2O + Energy-> C_6H_{12}O_6 + 6O_2 + 6H_2O

is the only endothermic reaction.

6CO_2 + 12H_2O + Energy->C_6H_{12}O_6 + 6O_2 + 6H_2O

4 0
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Which principle best explains how this thermometer works?
Mamont248 [21]

Answer:

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Explanation:

i belive its (3)

7 0
3 years ago
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