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ivanzaharov [21]
3 years ago
9

What is the mass of 3.2 moles of Sulfur?​

Chemistry
1 answer:
FinnZ [79.3K]3 years ago
8 0

Answer:

820.864 g

Explanation:

1) The atomic mass of sulfur (found from the periodic table) is 32.065 amu. Use this mass to find the molar mass of Sulfur. Sulfur is S8 so the molar mass of sulfur is:

8 × 32.065 = 256.52 g/mol

2) To find the mass use the formula:

m = n × M where <em>m</em><em> </em>is the mass, <em>n</em><em> </em>is the number of moles, and <em>M</em><em> </em>is the molar mass.

3)

m \: = 3.2 \times 256.52

m = 820.864 \: g

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The empirical formula of styrene is CH; its molar mass is 104.1 g/mol. What is the molecular formula of styrene
frez [133]
  • The atomic mass of carbon is 12.011 g/mol.
  • The atomic mass of hydrogen is 1.00794 g/mol.

This means the molar mass of CH is

12.011+1.00794=13.01894 \text{ g/mol}

Dividing the given molar mass by this,\frac{104.1}{13.01894} \approx 8

This means the molecular formula is \boxed{\text{C}_{8}\text{H}_{8}}

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2 years ago
20 moles of NH3 are needed to produce ? Moles of H2O
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3 years ago
How much force is needed to accelerate a 56 kg skier at 3 m/s?
Aloiza [94]

Answer:

<h2>168 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 56 × 3

We have the final answer as

<h3>168 N</h3>

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3 0
3 years ago
A 20.0 mL solution of NaOH is neutralized with 24.1 mL of 0.200 M HBr. What is the concentration of the original NaOH solution
Alinara [238K]

Answer:

0.241 M

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

HBr + NaOH —> NaBr + H₂O

From the balanced equation above,

The mole ratio of acid, HBr (nₐ) = 1

The mole ratio of base, NaOH (n₆) = 1

Finally, we shall determine the concentration of the NaOH solution. This can be obtained as follow:

Volume of base, NaOH (V₆) = 20 mL

Volume of acid, HBr (Vₐ) = 24.1 mL

Concentration of acid, HBr (Cₐ) = 0.2 M

Concentration of base, NaOH (C₆) =?

CₐVₐ / C₆V₆ = nₐ/n₆

0.2 × 24.1 / C₆ × 20 = 1/1

4.82 / C₆ × 20 = 1

Cross multiply

C₆ × 20 = 4.82

Divide both side by 20

C₆ = 4.82 / 20

C₆ = 0.241 M

Therefore, the concentration of the NaOH solution is 0.241 M

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3 years ago
Give two examples of an ionic compound. Chemical name and chemical structure.
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NaCl (Sodium chloride)
LiF (Lithium fluoride)
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