Monomer of nucleic acids is called nucleotide.
Answer:
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<u>Answer:</u> The mass percent of water in the hydrated sample is 21.5 %
<u>Explanation:</u>
To calculate the mass percentage of water in the hydrated sample, we use the equation:
![\text{Mass percent of water}=\frac{\text{Mass of water}}{\text{Mass of hydrated sample}}\times 100](https://tex.z-dn.net/?f=%5Ctext%7BMass%20percent%20of%20water%7D%3D%5Cfrac%7B%5Ctext%7BMass%20of%20water%7D%7D%7B%5Ctext%7BMass%20of%20hydrated%20sample%7D%7D%5Ctimes%20100)
We are given:
Mass of hydrated sample = 2.00 g
Mass of water = [2.000 - 1.570]g = 0.430 g
Putting values in above equation, we get:
![\text{Mass percent of water}=\frac{0.430g}{2.000g}\times 100=21.5\%](https://tex.z-dn.net/?f=%5Ctext%7BMass%20percent%20of%20water%7D%3D%5Cfrac%7B0.430g%7D%7B2.000g%7D%5Ctimes%20100%3D21.5%5C%25)
Hence, the mass percent of water in the hydrated sample is 21.5 %
Answer:
0.088mole
Explanation:
Given parameters:
Mass of the compound = 5.125g
Unknown:
Number of moles = ?
Solution:
To solve this problem, we need first find the molar mass of the given compound.
Molar mass of NaCl = 23 + 35.5 = 58.5g/mol
So;
Number of moles =
=
= 0.088mole
The molar mass of CuCl2 is 134.45 g/mol; therefore, you divide 2.5 g of CuCl2 by 134.45 g of CuCl2 leaving you with 0.019 moles