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3 years ago

'Synthetic detergents are better than soaps'. Justify this statement

Chemistry

2 answers:

KIM [24]3 years ago

8 0

Synthetic detergents work on both soft and hard water, while soap works only with soft water.

Shtirlitz [24]3 years ago

3 0

Answer:

Synthetic detergents can be used for washing purposes even when the water is hard, whereas soaps are not suitable for washing with hard water. This is because of the fact that synthetic detergents can lather with hard water. Hence, Synthetic detergents better than soaps.

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In the metallurgic industry one of the processes to get pure iron takes tree steps.

Leni [432]

Iron produced : 1.5 kg

<h3>Further explanation</h3>

Reaction

a) CaCO3→CaO + CO2

b) CO2 + C → 2CO

c) Fe2O3 + 3CO → 2Fe + 3CO2

mol CaCO₃ (MW=100,0869 g/mol) :

$\tt \dfrac{1340}{100,0869}=13.39$

mol CO₂ = mol CaCO₃ =13.39(reaction a)

mol CO = 2 x mol CO₂ = 26.78(reaction b)

mol CO(reaction c) = 1.5 mol CO from reaction b = 1.5 x 26.78 = 40.17

mol Fe(reaction c) = 2/3 x mol CO =

$\tt \dfrac{2}{3}\times 40.17=26.78$

Or we can cancel out the same compound in different sides from the sum of the three reactions to find mol Fe

a) CaCO3→CaO + CO2

b) CO2 + C → 2CO

c) Fe2O3 + 3CO → 2Fe + 3CO2

----------------------------------------------+

CaCO3 + Fe2O3 + C + CO + 3CO2 ⇒ CaO + 2Fe

mol Fe = 2 x mol CaCO3 = 2 x 13.39 = 26.78

mass Fe :

$\tt 26.78\times 55.845~g/mol=1495.53~g\approx 1.5~kg$

6 0

2 years ago

How many significant figures are in 11.005 g

Annette [7]

Answer:

Number of Significant Figures: 5

The Significant Figures are 1 1 0 0 5

Explanation:

8 0

3 years ago

Is a Frisbee flying through the air mechanical energy

victus00 [196]

Yes because mechanical energy is the motion of an object. hope that helped!

4 0

2 years ago

The chemical equation below shows the burning of magnesium (Mg) with oxygen (O2) to form magnesium oxide (MgO). 2Mg + O2 mc019-1

Nata [24]

The first step Niven has to do in his calculation is to Balanced the chemical equation. The answer is letter A. The key in the balancing of chemical reaction is to make sure that you got the exact chemical formula of the substance that is reacting and the yielded product. After getting the formula, identify first the hardest element/atom to be balanced such as Na, Zn, Cl, etc. Then proceed to the easier ones such as O, H. Make sure to not the atoms present in the molecule of the substance.

3 0

3 years ago

Read 2 more answers

How do you solve this ??

ICE Princess25 [194]

Answer:

Option D. 400 mmHg

Explanation:

The following data were obtained from the question:

Mole of He (nHe) = 0.04 mole

Mole of Ne (nNe) = 0.06 mole

Total pressure = 10³ mmHg

Partial pressure of He =.?

Next, we shall determine the total number of mole in the reaction vessel.

This can be obtained as follow:

Mole of He (nHe) = 0.04 mole

Mole of Ne (nNe) = 0.06 mole

Total mole =?

Total mole = nHe + nNe

Total mole = 0.04 + 0.06

Total mole = 0.1

Next, we shall determine the mole fraction of He.

This can be obtained as follow:

Mole fraction = mole of gas /total mole

Mole of He (nHe) = 0.04 mole

Total mole = 0.1

Mole fraction of He =.?

Mole fraction of He = nHe/total mole

Mole fraction of He = 0.04/0.1

Mole fraction of He = 0.4

Finally, we shall determine the partial pressure of He as follow:

Partial pressure = mole fraction x total pressure

Mole fraction of He = 0.4

Total pressure = 10³ mmHg

Partial pressure of He =.?

Partial pressure of He = 0.4 x 10³

Partial pressure of He = 400 mmHg.

Therefore, the partial pressure of He is 400 mmHg.

8 0

2 years ago

'Synthetic detergents are better than soaps'. Justify this statement​

'Synthetic detergents are better than soaps'. Justify this statement