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katovenus [111]
3 years ago
11

Can someone please help me !!- It would mean a lot ❤️

Chemistry
2 answers:
Reptile [31]3 years ago
6 0

_______________________________

<h2 /><h2 /><h2>Kendall</h2>

If something is heretic, it refers to certain characteristics that is coded in our DNA. In science we know that this is possible through understanding the workings of the chromosomes & their functions.

_______________________________

MrRissso [65]3 years ago
6 0
B. Carla is correct.

Why? - is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents. Heredity is the passage of genetic information from one generation to another. For offspring to inherit traitsthere must be a reliable mechanism for transferring genetic information from one generation to the next.
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How many molecules of carbon dioxide are dissolved in 0.550 L of water at 25 °C if the pressure of CO2 above the water is 0.250
Grace [21]

<u>Answer:</u> The number of molecules of carbon dioxide gas are 2.815\times 10^{21}

<u>Explanation:</u>

To calculate the molar solubility, we use the equation given by Henry's law, which is:

C_{CO_2}=K_H\times p_{CO_2}

where,

K_H = Henry's constant = 0.034mol/L.atm

C_{CO_2} = molar solubility of carbon dioxide gas

p_{CO_2} = pressure of carbon dioxide gas = 0.250 atm

Putting values in above equation, we get:

C_{CO_2}=0.034mol/L.atm\times 0.250atm\\\\C_{CO_2}=8.5\times 10^{-3}M

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}

Molarity of carbon dioxide = 8.5\times 10^{-5}M

Volume of solution = 0.550 L

Putting values in above equation, we get:

8.5\times 10^{-3}M=\frac{\text{Moles of }CO_2}{0.550L}\\\\\text{Moles of }CO_2=(8.5\times 10^{-3}mol/L\times 0.550L)=4.675\times 10^{-3}mol

According to mole concept:

1 mole of a compound contains 6.022\times 10^{23} number of molecules

So, 4.675\times 10^{-3} moles of carbon dioxide will contain = (6.022\times 10^{23}\times 4.675\times 10^{-3})=2.815\times 10^{21} number of molecules

Hence, the number of molecules of carbon dioxide gas are 2.815\times 10^{21}

3 0
3 years ago
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When a planet has the illusion of moving backwards or bouncing up and down it is exhibiting what?
Goryan [66]

Answer:  It is exhibiting retrogade motion.

7 0
3 years ago
If a neutral atom of chlorine has 17 electrons and 18 neutrons, how many protons does it have?
IceJOKER [234]
17, to be neutral it has to have equal number of protons and electrons
7 0
3 years ago
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Help would be majorly appreciated
Sophie [7]

Answer:

a) the atomic number is 15

b) the mass number is 15+16 = 31

c) element is phosphorus

d)Group 15 period 3

6 0
3 years ago
Can someone explain to me step by step with the equation on how to do it thx
Tasya [4]

Answer:

h=1

c=12

there 8 h

then there are 5 c

Explanation:

6 0
3 years ago
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