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MariettaO [177]
4 years ago
13

Can DNA evidence exclusively conclude ancestry?

Chemistry
2 answers:
AnnZ [28]4 years ago
5 0

Answer:

I believe it can. If you give part of your body to a website it will trace back and give you information about your ancestry.

Explanation:

In-s [12.5K]4 years ago
4 0

Answer:yes

Explanation:

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What is the chemical formula for nickel (ii) hypochlorite?
gtnhenbr [62]
The   chemical  formula  of  nickel  (ii) hypochlorite  is Ni(CIO)2. Nickel (II)   has a  charge  of  +2  while (CIO-)  which  is  a  poly  atomic ion  of  chlorine and  oxygen has  a  charge  of   -1.  After  balancing  the  charge  of    nickel with  that   of  CIO- you  get  the  chemical  formula  as  Ni(CIO)2.
3 0
3 years ago
During the combustion of NH3, there is an increase in the amount of oxygen present, from 5 to 20 moles while the amount of NH3 r
borishaifa [10]

Explanation:

The ratio of NH3 to NO produced will remain constant since NH3 is the limiting reactant.

Here in this reaction for every 4 moles of ammonia and 5 moles of oxygen gas , 4 moles of NO and 6 moles of water are formed.

So when the amount of oxygen gas is increased to 20 moles without changing the amount of ammonia , the amount of NO formed does not increase as ammonia becomes the limiting reactant.

6 0
3 years ago
To what volume (in mL) would you need to dilute 25.0mL of a 1.45 m solution of Kcl to make a 0.0245m solution of KCl
dezoksy [38]

Answer:

The answer is

<h2>1479.60 mL</h2>

Explanation:

In order to calculate the volume needed we use the formula

V_2 =  \frac{C_1V_1}{C_2}

where

C1 is the concentration of the stock solution

V1 is the volume of the stock solution

C2 is the concentration of the diluted solution

V2 is the volume of thevdiluted solution

From the question

C1 = 1.45 M

V1 = 25 mL

C2 = 0.0245 M

So we have

V_2 =  \frac{1.45 \times 25}{0.0245}   =  \frac{36.25}{0.0245}  \\  = 1479.59...

We have the final answer as

<h3>1479.60 mL</h3>

Hope this helps you

4 0
3 years ago
Select the correct answer.
Sladkaya [172]

Answer:

Explanation:

5 0
3 years ago
Solid nickel reacts with aqueous lead (II) nitrate to form solid lead. What is the net ionic equation for this reaction? • Hint:
hammer [34]

Answer:

Pb²⁺(aq) --> Ni²⁺(aq)

Explanation:

The equation of the reaction is given as;

Ni(s) + Pb(NO₃)₂(aq) --> Pb(s) + Ni(NO₃)₂(aq)

In writing the ionic equation, we break the aqueous compound into ions. The solid and liquid compounds are ignored.

We have;

Pb²⁺(aq)  + NO₃²⁻(aq) -->  Ni²⁺(aq)  + NO₃²⁻(aq)

Canceling the spectator ions;

Pb²⁺(aq) --> Ni²⁺(aq)

5 0
3 years ago
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