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SashulF [63]
2 years ago
8

4 Physical characteristics of: a glass of milk, a candle, a piece of aluminum foil, a spoonful of sugar, and toothpaste

Chemistry
1 answer:
Nadya [2.5K]2 years ago
6 0
Liquid, white,hm,wax,grey,sweet, white,minty,fresh,
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A _____ solution contains more dissolved solute than a saturated solution at the same temperature.
klemol [59]
The answer according to my teacher would be Supersaturated
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3 years ago
When CO2(g) is put in a sealed container at 730 K and a pressure of 10.0 atm and is heated to 1420 K , the pressure rises to 24.
d1i1m1o1n [39]

Answer:

48%

Explanation:

Based on Gay-Lussac's law, the pressure is directly proportional to the temperature. To solve this question we must assume the temperature increases and all CO2 remains without reaction. The equation is:

P1T2 = P2T1

<em>Where Pis pressure and T absolute temperature of 1, initial state and 2, final state of the gas:</em>

P1 = 10.0atm

T2 = 1420K

P2 = ?

T1 = 730K

P2 = 10.0atm*1420K / 730K

P2 = 19.45 atm

The CO2 reacts as follows:

2CO2 → 2CO+ O2

Where 2 moles of gas react producing 3 moles of gas

Assuming the 100% of CO2 react, the pressure will be:

19.45atm * (3mol / 2mol) = 29.175atm

As the pressure rises just to 24.1atm the moles that react are:

24.1atm * (2mol / 19.45atm) = 2.48 moles of gas are present

The increase in moles is of 0.48 moles, a 100% express an increase of 1mol. The mole percent that descomposes is:

0.48mol / 1mol * 100 = 48%

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2 years ago
The reaction of propyl magnesium bromide with formaldehyde​
andre [41]

Answer:

state ant two rights of women and children in relationships

7 0
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Answer please I don’t understand number 12
yan [13]
The density is mass divided by volume
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3 years ago
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Which of the following solutions would have the highest osmotic pressure?
Gennadij [26K]

Answer:

Option d. 0.10 m Cr₂(SO₄)₃

Explanation:

Formula for the osmotic pressure is determined as:

π = M . R . T . i

So you have to take account the i (Van't Hoff factor, numbers of ions dissolved)

  • CH₄N₂O → 0.35 m

Urea is an organic compound, so the i value is 1

  • H₂O → The i is also 1
  • Zn(CH₃COO)₂ → 0.15 m

Zync acetate can be dissociated:

Zn(CH₃COO)₂  →  1Zn²⁺  + 2CH₃COO⁻

In this case, the i is 3. (you see, the stoichiometry of ions)

Cr₂(SO₄)₃ →  0.10 m

Chromium sulfate is dissociated:

Cr₂(SO₄)₃ →  2Cr³⁺  +  3SO₄⁻²

i = 5

BaI₂ → 0.16 m

BaI₂ →  1Ba²⁺  +  2I⁻

i = 3

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