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Bad White [126]

3 years ago

9

Soaps feel slippery on our hands because they dissolve the oil on our skin, decreasing friction. This is because soap contains..

.
A) A neutral molecule.
B) A salt molecule
C) An acid
D) A base.

2 answers:

Viefleur [7K]3 years ago

8 0

Soap is a base, bases are usually bitter, sour and slippery,
hope this helped :)

Dmitriy789 [7]3 years ago

6 0

It’s gotta be d because soaps are a base and very slippery had Same anwser hope it helps

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An unknown substance has the composition of 77.87% c, 11.76% h and 10.37% o. the compound has a molar mass of 154.25 g/mole. wha

frutty [35]

We need to first calculate the empirical formula. Empirical formula is the simplest ratio of whole numbers of components in a compound,
Mass percentages have been given. We need to then calculate for 100 g of the compound
C H O
mass 77.87 g 11.76 g <span>10.37 g
number of moles 77.87/12 11.76/1 10.37/16
moles = 6.48 = 11.76 =0.648
divide by least number of moles
6.48/0.648 11.76/0.648 0.648/0.648
= 10 =18.1 = 1
rounded off
C - 10 , H - 18 and O - 1
empirical formula - C</span>₁₀H₁₈O
mass of empirical unit = 12 x 10 + 1x 18 + 16 = 120 + 18 + 16 = 154
number of empirical units = molecular mass / mass of one empirical unit
= 154.25 / 154 = 1.00
Therefore molecular formula = C₁₀H₁₈O

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3 years ago

What volume of a 5.00M solution of hydrochloric acid contains 8.00mol of HCl?

rjkz [21]

Answer:

520ML and apparently I need to put more in this answer

Explanation:

brainly.com

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4 years ago

Of the following gases, ________ will have the greatest rate of effusion at a given temperature. Of the following gases, _______

kolezko [41]

<u>Answer:</u> From the given gases, the greatest rate of effusion is of $CH_4$

<u>Explanation:</u>

Rate of effusion of a gas is determined by a law known as Graham's Law.

This law states that the rate of effusion or diffusion of a gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows:

$\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}$

It is visible that molar mass is inversely related to rate of effusion. So, the gas having lowest molar mass will have the highest rate of effusion.

For the given gases:

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Molar mass of $Ar=40g/mol$

Molar mass of $HBr=81g/mol$

The molar mass of methane gas is the lowest. Thus, it will have the greatest rate of effusion.

Hence, the greatest rate of effusion is of $CH_4$

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4 years ago

Chemical Quantities "Molar Mass - 2 step" - Wksh #3 Directions: Use dimensional analysis to perform the following calculations.

fomenos

There are about 1.27 × 10^23 molecules present in 13.5 g of SO2.

<h3>What are molecules?</h3>

A molecule is the simplest part of a compound that have independent existence.

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= 1.27 × 10^23 molecules

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x = 32 × 2.23 x 10^23 /6.02 × 10^23

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x = 6.02 × 10^23 × 42.15/127

x = 2 × 10^23 formula units

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8.83 x 10^23 formula units of Fe2O3 has a mass of 8.83 x 10^23 x 160 g/6.02 × 10^23

x = 235 g

Learn more about formula unit: brainly.com/question/19293051

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cricket20 [7]

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3 years ago