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damaskus [11]
4 years ago
15

A can of chicken broth contains 340 mg of sodium chloride in 286.7 g of broth. What is the percent by mass of sodium chloride in

the broth?
Chemistry
2 answers:
rosijanka [135]4 years ago
4 0

Answer:

The percent by mass of sodium chloride in the broth is 0.118 %

Explanation:

Step 1: Data given

Mass of sodium chloride = 340 mg = 0.340 grams

Mass of broth = 286.7 grams

Step 2: Calculate the total mass

Total mass = mass of sodium chloride + mass of broth

Total mass = 0.340 grams + 286.7 grams

Total mass =287.04 grams

Step 3: Calculate percent by mass of sodium chloride

% mass NaCl = (mass NaCl / total mass) *100%

% mass NaCl = (0.340 grams / 287.04 grams) *100 %

% mass NaCl = 0.118 %

The percent by mass of sodium chloride in the broth is 0.118 %

marshall27 [118]4 years ago
3 0

Answer:

0.12 & of NaCl

Explanation:

Determine the percentage of NaCl in the broth

First of all, we convert the mass from mg to g

340 mg . 1g/ 1000 mg = 0.340 g

Now  we can calculate the %

(0.340 g / 286.7 g) . 100 = 0.12 %

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Suppose you have 81.8 g of Cd. How many Cd atoms are present? Report your answer in scientific notation using the format of 6.02
Lostsunrise [7]

Answer:

1. number of Cd atoms = 4.384 × 10²³

2. number of moles of Ti = 0.817 mol

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4. moles of Sildenafil = 0.249 mmol

Explanation:

1. given data

mass of Cd = 81.8 g

number of Cd atoms = ?

molar mass of Cd = 112.411 g/mol

Solution

1st we find out the number of moles of Cd

<em>         number of moles = mass / molar mass </em>

 number of moles of Cd = 81.8 g / 112.411 g.mol⁻

 number of moles of Cd = 0.728 mol

Now we find out the number of Cd atoms

<em>       number of atoms = moles × 6.022 × 10²³</em>

 number of Cd atoms = 0.728 (6.022 × 10²³)

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2. Given data

Mass of Ti = 39.1 g

moles = ?

molar mass Ti = 47.867 g/mol

Solution

Now we will find out the number of moles

<em>         number of moles = mass / molar mass </em>

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3. Given data

chemical formula of Salicylic acid  = C₇H₆O₃

molar mass of salicylic acid = ?

molar mass of carbon = 12.011

molar mass of hydrogen = 1.008

molar mass of oxygen = 15.999

<em>         molar mass of  molecule = number of moles of atoms × molar mass of atoms</em>

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4. Given data

molar mass of Sildenafil = 474.5828 g/mol

mass given = 0.118 g

moles of Sildenafil = ?

Solution

Now we find out the number of moles

<em>          number of moles = mass / molar mass </em>

<em>   </em>number of moles Sildenafil = 0.118 g / 474.5828 g/mol

  number of moles Sildenafil = 0.0003 mol

as this is very small amount we convert it into millimoles

           <em>millimoles = moles × 1000</em>

    millimoles of Sildenafil = 0.000249 × 1000

    millimoles of Sildenafil = 0.249 mmol

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Answer:

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Explanation:

In this case, we have a <u>dilution problem.</u> So, we have to start with the dilution equation:

C_1*V_1=C_2*V_2

We have to remember that in a dilution procedure we go from a <u>higher concentration to a lower one</u>. With this in mind, We have to identify the <u>concentration values</u>:

C_1~=~6.00~M

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The higher concentration is C1 and the lower concentration is C2. Now, we can identify the <u>volume values</u>:

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The V2 value has <u>"mL"</u> units, so V1 would have <u>"mL"</u> units also. Now, we can include all the values into the equation and <u>solve for "V1"</u>, so:

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Answer:

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