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3 years ago

What happens when you add salt to very cold ice?

1 answer:

4 0

When salt is added to ice , it comes into contact with the thin layer of water on the surface of the melting ice. ... This salt water has a lower freezing point, so the temperature of the ice bath can get even colder, thus freezing the ice cream more quickly.

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Which is made by weathering???

Alinara [238K]

Minerals, Because when wind blows everything and crushes rocks into minerals.

Please make me brainy answer

7 0

3 years ago

please look at the attached image i have to finish this entire unit by midnight and im stuck on this problem

djyliett [7]

$\text{H}_{2(g)}\text{ + CO}_{2(g)}\text{ }\rightleftarrows\text{ H}_2\text{O}_{(g)}\text{ + CO}_{(g)}$

The reaction is balanced

The equilibrium constant is defined as the concentration ratio of the products and reactants. They are not considered pure solids and liquids.

$\text{ K}_{eq}=\frac{\lbrack\text{CO}\rbrack\lbrack\text{ H}_2\text{O}\rbrack}{\lbrack\text{ H}_2\rbrack\lbrack\text{ CO}_2\rbrack}$

So the answer is option B.

4 0

1 year ago

Claudia and her team of scientists develop a new car battery that recharges electric cars at a fast rate.

Doss [256]

Answer: Waste Operators will handle less hazardous material.

Explanation: Since the electric car is electric it produces hazardous material and now that it doesn't it wont.

7 0

3 years ago

A 2.00-liter sample of a gas has a mass of 1.80 grams. what is the density ,in grams liter

maria [59]

<span>Density is a value for mass, such as kg, divided by a value for volume, such as m3. Density is a physical property of a substance that represents the mass of that substance per unit volume.

Density = 1.80 g / 2 L = 0.9 g/L</span>

4 0

3 years ago

The normal boiling point of methanol is 64.7 ∘ C and the molar enthalpy of vaporization is 71.8kJ/mol . The value of ΔS when 1.3

guapka [62]

Answer:

286 J/K

Explanation:

The molar Gibbs free energy for the vaporization (ΔGvap) is:

ΔGvap = ΔHvap - T.ΔSvap

where,

ΔHvap: molar enthalpy of vaporization

T: absolute temperature

ΔSvap: molar entropy of the vaporization

When T = Tb = 64.7 °C = 337.9 K, the reaction is at equilibrium and ΔGvap = 0.

ΔHvap - Tb . ΔSvap = 0

ΔSvap = ΔHvap/Tb = (71.8 × 10³ J/K.mol)/ 337.9 K = 212 J/K.mol

When 1.35 mol of methanol vaporizes, the change in the entropy is:

$1.35mol.\frac{212J}{K.mol} =286 J/K$

7 0

3 years ago