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Sav [38]
4 years ago
13

How can soap affect the surface tension

Chemistry
1 answer:
mario62 [17]4 years ago
5 0
By breaking the hydrogen bonds that cause surface tension
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F2 is light yellow/colorless in hydrocarbon solvent. I2 is pink. If a student combines fluorine water with NaI (sodium iodide) i
Tamiku [17]
F₂ + 2 NaI → 2 NaF + I₂
<span>It is given that F₂ is light yellow / colorless in hydrocarbon solvent. The student combines Fluorine water with NaI in water. Then student adds pentane in the mixture of F₂ and NaI. After dissolution, solution was observed and a colorless pentane layer was seen. Alkanes are unreactive in nature. The C-H bond in alkane is difficult to break. whereas, F₂ is very reactive and reacts vigorously with alkanes in presence of light by free radical mechanism.It is given that the color of the solution is nearly colorless. F₂ when present in hydrocarbon solvent is light yellow/ colorless/ nearly colorless. Hence, F₂ is not reacting with hydrocarbon and there is no reaction taking place (No F</span>₂ is present<span>)</span>
5 0
3 years ago
How objects with different masses and volumes have the same density?​
AURORKA [14]

Answer:

mass and volume are independent. Two objects with the same volume can have different masses hence they can have different densities

Explanation:

The mass of atoms their size and how they are arranged determine the density

6 0
3 years ago
Chose the statements that are TRUE from the list below Group of answer choices Ions exist alone in nature We add calcium carbona
kompoz [17]

Answer:

The first option is false, since limestone has a much more acidic pH than granite. The pH of limestone is between 3.5 and 5.0, while the pH of granite is generally around 4.8 and 5.6.

The second option is false. (Traditionally, lactic acidosis has been classified into two categories: type A and type B. Type A is the result of tissue hypoxia and type B occurs with normal tissue perfusion and a adequate global tissue oxygenation)

The third option is false.

In the fourth option we consider that it is true since the hydrofluoric acid is a weak acid. Hydrogen fluoride actually does dissolve quite freely in water, but the H 3 O + and F - ions are strongly attracted to each other and form the strongly bonded pair, H 3 O + · F -

Explanation:

The third option is considered false since the salts contain an acid and a basic part, where one works as an anion and the other as a cation against dissolution, that is why they are not one or the other, but both chemical characteristics make up the Salt.

There are more or less soluble salts than others, and in turn there are binary, quaternary, tertiary or simple salts.

Y como para contribuir más a la explicación, es importante recordar el grupo de los acidos se clasifica en dons grandes familias, en acidos debiles y fuertes.

Un alcalde ph mas debiles seran, por más tiempo cercano al valor ph: 7 esten menos acidificacion tendran, y cuanto más lejos de la neutralidad este es su numero de ph mas fuertes seran.

5 0
4 years ago
What is the only nonmetal with four valence electrons?.
mamaluj [8]

Answer:

Carbon

Explanation:

I just finished this and that's what I got from my periodic table.

7 0
2 years ago
When 32.5g of carbon is heated with silicone dioxide, 28.8 g of carbon monoxide is produced. What is the percent yield of carbon
Anvisha [2.4K]

Answer:

Percent yield of carbon monoxide is approximately 38%.

Explanation:

Given reaction : C + SiO₂ → Si + CO

On balancing it : 2C + SiO₂ → Si + 2CO

⇒ 2 mole of carbon produces 2 mole of carbon monoxide

or 2×12=24 g of carbon produces 2×(12+16)=56 g of carbon monoxide

⇒ Expected yield of carbon monoxide when 32.5g of carbon is heated with silicon dioxide is 32.5×\frac{56}{24}

⇒ Expected yield = \frac{455}{6} = 75.8 g

Actual yield is given as 28.8 g

⇒ The percent yield of carbon monoxide = \frac{Actual\ yield}{Expected\ yield}×100

= \frac{28.8}{75.8}×100

≅<u>38%</u>

5 0
4 years ago
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