Water and a nonpolar substance will need to be forcibly mixed. this best describes a(n):__________

Chemistry

1 answer:

Alex_Xolod [135]2 years ago

4 0

Water and a nonpolar substance will need to be forcibly mixed. this best describes a(n):__________

emulsion

What is emulsion?

a colloid system in which both the dispersed phase and the dispersion medium are liquids; a mixture of two immiscible liquids, one of which is scattered throughout the other in tiny droplets.

Emulsions include margarine, cold cream, and numerous medicinal ointments. Every time an emulsion is used, the container must be shaken since some emulsions have a tendency for the suspended particles to stick together and settle out.

Applied to a suitable foundation, a dehydrated gel emulsion of light- or radiation-sensitive silver halide is known as a film emulsion.

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A compound is found to be 30.45% n and 69.55 % o by mass. if 1.63 g of this compound occupy 389 ml at 0.00°c and 775 mm hg, what

Charra [1.4K]

1) mass composition

N: 30.45%
O: 69.55%
-----------
100.00%

2) molar composition

Divide each element by its atomic mass

N: 30.45 / 14.00 = 2.175 mol

O: 69.55 / 16.00 = 4.346875

4) Find the smallest molar proportion

Divide both by the smaller number

N: 2.175 / 2.175 = 1

O: 4.346875 / 2.175 = 1.999 = 2

5) Empirical formula: NO2

6) mass of the empirical formula

14.00 + 2 * 16.00 = 46.00 g

7) Find the number of moles of the gas using the equation pV = nRT

=> n = pV / RT = (775/760) atm * 0.389 l / (0.0821 atm*l /K*mol * 273.15K)

=> n = 0.01769 moles

8) Find molar mass

molar mass = mass in grams / number of moles = 1.63 g / 0.01769 mol = 92.14 g / mol

9) Find how many times the mass of the empirical formula is contained in the molar mass

92.14 / 46.00 = 2.00

10) Multiply the subscripts of the empirical formula by the number found in the previous step

=> N2O4

Answer: N2O4

3 0

3 years ago

Which of the following is a product of aerobic respiration?

sasho [114]

Answer:

The product of aerobic respiration is Carbon dioxide.

Explanation:

The process of breaking down glucose to produce energy and waste products is called respiration. Livings beings need respiration process to generate energy so that they can survive.
The types of respiration are : Anaerobic and aerobic respiration.
Aerobic respiration takes place in presence of oxygen and produces large amount of energy.
The final product of aerobic respiration are carbon dioxide, water and 38 ATP of energy.