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2 years ago

Why potassium by sulphite or KHSO4 donot preserve meat

Chemistry

1 answer:

Debora [2.8K]2 years ago

4 0

Answer:

Postassium bisulphate - KHSO4 - can be used as an food preservative to protect the food from micro-organisms.

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You make an experiment to determine the percent mass of carbon in sugar. You find out that there is 46.63g of carbon in 75.00g o

Aleksandr [31]

Taking into account the definition of percentage composition, the percent composition of carbon in this sample is 62.17%.

<h3>Percentage composition</h3>

The Percentage Composition is a measure of the amount of mass that an element occupies in a compound and indicates the percentage by mass of each element that is part of a compound.

Then, the percentage by mass expresses the concentration and indicates the amount of mass of solute present in 100 grams of solution.

In other words, the percentage by mass of a component of the solution is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.

The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage. This is:

$percentageby mass= \frac{mass of solute}{mass of solution}x100$

In this case, you know:

mass of solute= 46.63 g
mass of solution= 75 g

Replacing:

$percentageby mass= \frac{46.63 g}{75 g}x100$

Solving:

<u><em>percentage by mass= 62.17 %</em></u>

Finally, the percent composition of carbon in this sample is 62.17%.

Learn more about percent composition:

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3 0

2 years ago

How much heat in joules is required to heat a 43g sample of aluminum from an initial temperature of 72˚F to a final temperature

Stels [109]

The first step to answering this item is to convert the given temperatures in °F to °C through the equation,

°C = (°F - 32)(5/9)

initial temperature: 72°F

  °C = (72 - 32)(5/9) = 22.22°C

final temperature: 145°F

  °C = (145 - 32)(5/9) = 62.78°C

Substituting to the equation,

H = mcpdT

H = (43 g)(0.903 J/g°C)(62.78 - 22.22)

H = 1574.82 J

<em>Answer: 1574.82 J</em>

3 0

3 years ago

Please solve for Cu,N,and O an dif you can show how cause ik confused

belka [17]

Cu⇒ 1 atom

N⇒2 atoms

O⇒6 atoms

Total 9 atoms

<h3>Further explanation </h3>

The empirical formula is the smallest comparison of atoms of compound forming elements.

A molecular formula is a formula that shows the number of atomic elements that make up a compound.

<em>(empirical formula) n = molecular formula </em>

Chemical formula : Cu(NO₃)₂

Number of Cu : 1

Number of N : 2

Number of O = 2 x 3 = 6

Total atoms in Cu(NO₃)₂ : 1 + 2 + 6 = 9

4 0

2 years ago

The chemical equation for the formation of ammonia is unbalanced.

galben [10]

Answer:

The answer to your question is 2 molecules

Explanation:

Unbalanced chemical reaction

H₂(g) + N₂(g) ⇒ NH₃ (g)

Reactants Elements Products

2 H 3

2 N 1

Balanced chemical reaction

3H₂(g) + N₂(g) ⇒ 2NH₃ (g)

Reactants Elements Products

6 H 6

2 N 2

From the balanced chemical reaction we conclude that when 3 molecules of hydrogen react with one molecule of nitrogen, 2 molecules of ammonia will be formed.

4 0

3 years ago

Read 2 more answers

The molecular geometry of SO 3 is a tetrahedral b. bent Coctahedral d. trigonal planar pyramidal

Dimas [21]

Answer:

The correct option is: d. trigonal planar

Explanation:

Sulfur trioxide is a chemical compound and the chemical formula of the compound is SO₃. In this molecule, the sulfur atom is in its +6 oxidation state and is covalently bound to three oxygen atoms. Sulfur trioxide is a neutral molecule. According to the VSEPR theory, Sulfur trioxide has a<u> trigonal planar molecular geometry.</u>

7 0

2 years ago