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Rom4ik [11]
3 years ago
14

The usefulness of diffusion in daily life​

Chemistry
2 answers:
Alexus [3.1K]3 years ago
8 0

Answer:

<em>You can smell perfume because it diffuses into the air and makes its way into your nose. 2. Cigarette smoke diffuses into the air. ... A tea bag placed in a cup of hot water will diffuse into the water.</em>

Explanation:

Hope this helps

Gala2k [10]3 years ago
6 0
No watching tab it will be good
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A recipe for candy requires that the liquid ingredients be stirred constantly until the liquid reaches a temperature of 140°C. W
inn [45]

Answer:

Wood

Explanation:

Wood because the heat would not be able to travel to the hand to burn it unlike  the metal

8 0
3 years ago
Imagine two solutions with the same concentration and the same boiling point, but one has ethanol as the solvent and the other h
defon

Answer: m = 0.42; Tb = 79°

Explanation: The relationship between boiling point of the solvent above a solution is directly proportional to the molal concentration of the solute, i.e.:

ΔT = K_{b}.m

where

ΔT is the change in boiling point of the solvent;

K_{b} is the molal boiling point elevation constant;

m is the molal concentration of the solute in the solution;

For there two solutions:

1) Ethanol:

ΔT = K_{b}.m

Tb - T_{normal} = K_{b}.m

Tb - 78.4 = 1.22.m (1)

2) Carbon Tetrachloride:

Tb - T_{normal} = K_{b}.m

Tb - 76.8 = 5.03.m (2)

Solving the system of equations:

Tb - 78.4 = 1.22.m

Tb = 1.22.m + 78.4 (3)

Substituing (3) in (2)

1.22.m + 78.4 - 76.8 = 5.03m

3.81m = 1.6

m = 0.42

With m, find Tb:

T - 76.8 = 5.03.0.42

T = 2.11 + 76.8

T = 79°

<u>Molal</u> concentration is <u>0.42</u> and boiling point is 79°

4 0
4 years ago
A student is monitoring the pressure of a gas in a rigid container. The amount of gas particles and the volume of the container
GenaCL600 [577]

a.The gas pressure will decrease.

Explanation:

If in a rigid container, the amount of gas particles and volume of the container is held constant, the pressure will decrease if the temperature is reduced.

  • Gases are highly random particles and they require a high amount of kinetic energy to be in their state of matter.
  • In a condition where volume of container is fixed, the amount of gas particles is fixed and the temperature reduced, the kinetic energy of the gas particles will directly reduce.
  • The kinetic energy of gases is directly related to temperature.

Learn more:

kinetic theory brainly.com/question/9924094

#learnwithBrainly

6 0
4 years ago
Read 2 more answers
Which change increases the amount of iron produced in the equation fe3o4(s) 4h2(g) energy?
Debora [2.8K]
FeSO4 (s) plus  4H2 (g) gives  3Fe(s)  plus  4H2O(l)
  from  the  equation  above   i  mole  of  FeSO4 reacted  with  4  mole  of H2  gas  to  give  3 moles  of  iron  and  4  moles  of  water.There  is  a relationship  between  volume  and  equilibrium  shift. Decrease  in  volume  favor  the  side  with  less  moles  of  a  gas. since  hydrogen  is  a  gas    a  decrease  in   volume  favor  the  forward  reaction  hence  more  Fe  is  produced.
6 0
3 years ago
The label on a bottle shows the following information: C2H4O, molar mass 44.06 grams per mole. The formula must be:
Ivahew [28]
The formula can be empirical because the subscripts are reduced to the lowest fraction. 

To check if this formula is also the molecular formula we can check by obtaining the molar mass of the compound it is equal to the given molar mass. Thus 

12*2 + 4*1 + 16 = 44 g/mol

this is ~equal to the given molar mass thus the given equation can be both empirical and molecular.
5 0
3 years ago
Read 2 more answers
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