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BabaBlast [244]
3 years ago
14

What is the percent composition of tungsten​

Chemistry
2 answers:
lawyer [7]3 years ago
5 0
20 is the answer to your question
Cloud [144]3 years ago
4 0

Answer:

\huge \boxed{100\%}

Explanation:

Tungsten is an element in the periodic table with an atomic number of \sf 74, symbol \sf W, and atomic mass of \sf 183.84 \ u.

The percent composition of Tungsten is \sf 100\%.

Tungsten is a rare metal and is the strongest known metal on Earth.

Tungsten can be used to make bullets and missiles.

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Assuming that an acetic acid solution is 12% by mass and that the density of the solution is 1.00 g/mL, what volume of 1 M NaOH
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Explanation:

Let us assume that total mass of the solution is 100 g. And, as it is given that acetic acid solution is 12% by mass which means that mass of acetic acid is 12 g and 88 g is the water.

Now, calculate the number of moles of acetic acid as its molar mass is 60 g/mol.

    No. of moles = \frac{mass}{\text{molar mass}}

                           = \frac{12 g}{60 g/mol}

                           = 0.2 mol

Molarity of acetic acid is calculated as follows.

              Density = \frac{mass}{volume}

                 1 g/ml = \frac{100 g}{volume}

                    volume = 100 ml

Hence, molarity = \frac{\text{no. of moles}}{volume}

                           = \frac{0.2 mol}{0.1 L}

                           = 2 mol/l

As reaction equation for the given reaction is as follows.

     NaOH + CH_{3}COOH \rightarrow CH_{3}COONa + H_{2}O

So,          moles of NaOH = moles of acetic acid

Let us suppose that moles of NaOH are "x".

          x \times 1 M = 10 mL \times 2 M     (as 1 L = 1000 ml)

                        x = 20 L

Thus, we can conclude that volume of NaOH required is 20 ml.                    

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I think it’s B vibrations in molecules
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Conner is testing the pH of a swimming pool and he finds it to be 6.5. The optimal pH for swimming is between 7.7 and 7.6. Conne
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