The scientists research project with the goal of determining the sequence of chemical base pairs which make up human DNA, and of identifying and mapping<span> all of the genes of </span>the human genome<span> </span>
Brenda is correct!
Hope this helps!:)
Answer:
that element is likely to be a non metaland a gas
If we write the equation of the reaction that will take place, it is:
2HNO₃ + Na₂CO₃ → 2NaNO₃ + H₂CO3
The molar ratio of 2HNO₃ : Na₂CO₃ = 1 : 2
Therefore, we can set up the equation:
M₁V₁ = 2M₂V₂
Where the left side of the equation has the molarity and volume of HNO₃ and the right side has the molarity and concentration of Na₂CO₃. Substituting:
M₁ = (2 x 0.108 x 35.7) / 25
M₁ = 0.308 M
Answer:
The mass of 
required = 5.0674 g
Explanation:
The formula for the calculation of moles is shown below:
Given :
Mass = 500 mg
Molar mass of 
= 382.1455 g/mol
Thus,
Also,
Molar mass of = 253.37 g/mol
Let the mass of the salt to prepare 100 mL 0.200 M solution = x g
The formula for the calculation of moles is shown below:
Thus,
Given that volume = 100 mL
Also,
So, Volume = 100 / 1000 L = 0.1 L
Molarity = 0.200 M
Considering:
x = 5.0674 g
<u>The mass of required = 5.0674 g</u>
