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3 years ago

What is one pro and one con of mining?

Chemistry

1 answer:

blondinia [14]3 years ago

8 0

Answer:

Pro exercise con suffication

Explanation:

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A 250 cm^3 solution containing 1,46 g of sodium chloride is added to an excess of silver nitrate solution. The reaction is given

faust18 [17]

Answer:

The mass of the precipitate that AgCl is 3.5803 g.

Explanation:

a) To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

We are given:

Mass of solute (NaCl) = 1.46 g

Molar mass of sulfuric acid = 58.5 g/mol

Volume of solution = $250 cm^3 =250 mL$

$1 cm^3= 1 ml$

Putting values in above equation, we get:

$\text{Molarity of solution}=\frac{1.46g\times 1000}{58.5g/mol\times 250}\\\\\text{Molarity of solution}=0.09982 M$

0.09982 M is the concentration of the sodium chloride solution.

b) $NaCl (aq)+AgNO_3 (aq)\rightarrow AgCI(s)+NaNO_3(aq)$

Moles of NaCl = $\frac{1.46 g}{58.5 g/mol}=0.02495 mol$

according to reaction 1 mol of NaCl gives 1 mol of AgCl.

Then 0.02495 moles of NaCl will give:

$\frac{1}{1}\times 0.02495 mol=0.02495 mol$ of AgCl

Mass of 0.02495 moles of AgCl:

$0.02495 mol\times 143.5 g/mol=3.5803 g$

The mass of the precipitate that AgCl is 3.5803 g.

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3 years ago

Which of the elements below has the highest ionization energy? Carbon, calcium, barium, or fluorine?

Serjik [45]

Fluorine has 1680 kJ/mol

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What are ways to make a reaction go faster

slamgirl [31]

The nature of reactants, temperature, concentration, surface area and catalysts.

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4 years ago

Why must chemical equations be balanced?

Elina [12.6K]

Answer:

to validate the law of conservation of mass as total no. of reactants must be equal to the total no. of products

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Large objects that form dense gravity wells in space A. Galaxies B. Star C. Nebulae D. Black holes.

BigorU [14]

Answer:

D. Black Holes

Explanation:

Black holes are large objects that form dense gravity wells in space. Their gravitational pull is so strong that even light cannot escape it.

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3 years ago

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