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OleMash [197]
2 years ago
8

Dry ice goes directly from the solid phase to the gas phase. What phase

Chemistry
2 answers:
Marianna [84]2 years ago
8 0

Answer:

Sublimation is being represented.

Sublimation is the transition from solid to gas state

Hope this helps! Have a good day!

GalinKa [24]2 years ago
7 0

Answer:

Sublimation

Explanation:

Sublimation is when a solid turns into a gas

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Assuming that sea water is a 3.5 wt % solution of NaCl in water, calculate its osmotic pressure at 20°C. The density of a 3.5% N
olga nikolaevna [1]

Answer:

π = 14.824 atm

Explanation:

wt % = ( w NaCL / w sea water ) * 100 = 3.5 %

assuming w sea water = 100 g = 0.1 Kg

⇒ w NaCl = 3.5 g

osmotic pressure ( π ):

  • π = C NaCl * R * T

∴ T = 20 °C  + 273 = 293 K

∴ C ≡ mol/L

∴ density sea water = 1.03 Kg/L....from literature

⇒ volume sea water = 0.1 Kg * ( L / 1.03 Kg ) = 0.097 L sln

⇒ mol NaCl = 3.5 g NaCL * ( mol NaCL / 58.44 g ) = 0.06 mol

⇒ C NaCl = 0.06 mol / 0.097 L = 0.617 M

⇒ π = 0.617 mol/L * 0.082 atm L / K mol * 293 K

⇒ π = 14.824 atm

7 0
3 years ago
The volume of a weather balloon is 200.0 L and its internal pressure is 1.17 atm when it is launched at 20 °C. The balloon rises
brilliants [131]

Answer:

2022 L

Explanation:

Ideal gas laws will work for gas in the balloon

The general gas law is for a gas at two arbitrary states 1 and 2 is given by

(P₁ V₁)/T₁ = (P₂ V₂)/T₂

P₁ = 1.17 atm

V₁ = 200.0 L

T₁ = 20°C = 293.15 K

P₂ = 63 mmHg = 0.0829 atm

V₂ = ?

T₂ = 210 K

(1.17 × 200)/293.15 = (0.0829 × V₂)/210

V₂ = (210 × 1.17 × 200)/(293.15 × 0.0829)

V₂ = 2022 L

8 0
3 years ago
itrogen forms a number of different compounds with oxygen, depending upon the experimental conditions. This type of observation
statuscvo [17]

Answer:

the Law of multiple proportions

Explanation:

The law of multiple proportions states that, if two elements A and B combine to form more than one chemical compound, then the various masses of one of the elements A, which combines with a fixed mass of the element B are in simple multiple ratio.

This is demonstrated in the formation of nitrogen compounds such as NO and N2O when nitrogen combines with oxygen. This ratio is always constant.

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2 years ago
What’s my resting energy????
yulyashka [42]
Water :| water is your delicious food
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Research on the causes of ozone layer depletion and classify whether the
storchak [24]

Answer:

The health effects of ozone layer depletion is discussed below

Explanation:

. Ozone layer depletion effects improved UV radiation levels at the

Earth's covering, which is degrading to human well-being.

Negative consequences involve improvements in several varieties of

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• Ozone layer exhaustion improves the quantity of UVB that touches the

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