Answer is: the nature of the initial nickel sulfide mixture is a suspension.
Suspension<span> is a </span>heterogeneous mixture (solute<span> particles do not </span>dissolve), <span>that contains </span>solid<span> particles (in this example nickel sulfide or NiS) sufficiently large for </span>sedimentation. <span> The internal phase (solid nickel sulfide) is dispersed throughout the external phase (water).</span>
When determining the percentage by mass of a solution, the mass of the solvent is measured last.
<h3>What is the percentage by mass of a solvent?</h3>
The percentage by mass of a solvent in a solution is the ratio of the mass of the solvent and the mass of the entire solution.
Mathematically, this can be expressed as:
Percentage by mass of solvent = mass of solvent/mass of solution x 100
Thus, given a solution, a weighing balance, an evaporating dish, and a burner:
- The mass of the evaporating dish is determined first (A)
- The mass of the evaporating dish and the solution next (B)
- Next would be to heat the solution to remove the solvent.
- The mass of the evaporating dish plus the residue is then measured (C).
Thereafter, the amount of solvent can then be determined as: (A+B) - C.
More on percentage by mass can be found here: brainly.com/question/16885872
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Answer:
5.62 g of F2
Explanation:
We have to start with the chemical reaction:
![Cl_2~+~3F_2~-->~2ClF_3](https://tex.z-dn.net/?f=Cl_2~%2B~3F_2~--%3E~2ClF_3)
<u>We have a balanced reaction</u>, so we can continue with the <u>mol calculation</u>. For this, we need to know the <u>molar mass</u> of
(70.906 g/mol), so:
![3.5~ g~Cl_2 \frac{1~mol~Cl_2}{70.906~g~Cl_2}=0.049~mol~Cl_2](https://tex.z-dn.net/?f=3.5~%0Ag~Cl_2%0A%5Cfrac%7B1~mol~Cl_2%7D%7B70.906~g~Cl_2%7D%3D0.049~mol~Cl_2)
Now, with the <u>molar ratio</u> between
and
we can convert from moles of
and
(1:3), so:
![0.049~mol~Cl_2\frac{3~mol~F_2}{1~mol~Cl_2}=0.148~mol~F_2](https://tex.z-dn.net/?f=0.049~mol~Cl_2%5Cfrac%7B3~mol~F_2%7D%7B1~mol~Cl_2%7D%3D0.148~mol~F_2)
Finally, with the <u>molar mass</u> of
we can calculate the gram of
(37.99 g/mol), so:
![0.148~mol~F_2\frac{37.99~g~F_2}{1~mol~F_2}=5.62~g~F_2](https://tex.z-dn.net/?f=0.148~mol~F_2%5Cfrac%7B37.99~g~F_2%7D%7B1~mol~F_2%7D%3D5.62~g~F_2)
I hope it helps!
Answer:
polymethylmethacrylate bone cement is a polymer formed by mixing highly volatile liquid methylmethacrylate (MMA) monomer with an accelerator, polymethylmethacrylate powder. This bone cement is used during orthopedic surgery to implant prostheses for joint replacement
Explanation:
it was so easy thanks for the work form my brain