Sex cells only contain one chromosome from each pair. When an egg cell andsperm<span> cell join together, the fertilised egg cell contains 23 pairs of chromosomes. One chromosome in each pair comes from the mother, the other from the father.
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Answer:
207.89g
Explanation:
The formula of the compound is:
Fe₂S₃
Find the molar mass of the compound;
Atomic mass of Fe = 55.845g/mol
S = 32.065g/mol
Now;
Molar mass of Fe₂S₃ = 2 (55.845) + 3 (32.065)
= 207.89g
<u>Answer:</u>
<em>To raise the pH of the solution to 3.10 we have to add 2.34 L of water.</em>
<u>Explanation:</u>
<em>Given that the pH of the solution of HCl in water is 2.5.</em> Here the solution’s pH is changing from 2.5 to 3.10 which means the acidic nature of the solution is decreasing here on dilution. ![[H^+]](https://tex.z-dn.net/?f=%5BH%5E%2B%5D)
ions contribute to a solution’s acidic nature and ![[OH^-]](https://tex.z-dn.net/?f=%5BOH%5E-%5D)
contribute to a solution’s basic nature.
The equation connecting the concentration of and pH of a solution is pH= ![-log[H^+]](https://tex.z-dn.net/?f=-log%5BH%5E%2B%5D)
<em>![[H^+]= 10^(^-^p^H^)](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D%2010%5E%28%5E-%5Ep%5EH%5E%29)
![[H^+]= 10^(^-^2^.^5^)=0.00316](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D%2010%5E%28%5E-%5E2%5E.%5E5%5E%29%3D0.00316)
</em>
<em>When the pH is ![3.1 [H^+ ]= 10^(^-^3^.^1^)=0.000794](https://tex.z-dn.net/?f=3.1%20%5BH%5E%2B%20%5D%3D%2010%5E%28%5E-%5E3%5E.%5E1%5E%29%3D0.000794)
</em>
<em>On dilution the concentration of a solution decreases and volume increases.</em>
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<em>Volume of water to be added 
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Answer:
This is because no energy is being created or destroyed in this system
Explanation:
I think this is correct? I hope it helps.
C. Also just look up a chemical equation balancer calculator next time.
