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jekas [21]
2 years ago
15

14. As the moles of salt added are increased, what happens to the melting point of the water?

Chemistry
2 answers:
xenn [34]2 years ago
5 0

As I read and learned somewhere Oct 22, 2007, said this information— Salt lowers the freezing/melting point of water, so in both cases, the idea is to take advantage of the lower melting point. Ice forms when the temperature of the water reaches 32 degrees Fahrenheit (0 degrees Celsius).

Vika [28.1K]2 years ago
3 0
Salt lowers the freezing/melting point of water, so in both cases the idea is to take advantage of the lower melting point. Ice forms when the temperature of water reaches 32 degrees Fahrenheit (0 degrees Celsius).
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A sample of nitrogen gas collected at a pressure of 1.03 atm and a temperature of 279 K is found to occupy a volume of 568 milli
DIA [1.3K]

Answer: 0.025 moles of nitrogen gas are there in the sample.

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 1.03 atm

V = Volume of gas = 568 ml = 0.568 L   (1L=1000ml)

n = number of moles  = ?

R = gas constant =0.0821Latm/Kmol

T =temperature =279K

n=\frac{PV}{RT}

n=\frac{1.03atm\times 0.568L}{0.0821L atm/K mol\times 279K}=0.025moles

0.025 moles of nitrogen gas are there in the sample.

4 0
3 years ago
The molar mass of NaCl is 58.44 g/mol. What is the molarity of a solution that
Sauron [17]
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2 years ago
A bowling ball, a baseball, a tennis ball, and a ping-pong ball are all dropped from a height of 2 meters. Which has the most ki
mr_godi [17]

Answer:

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6 0
2 years ago
Chemistry to make tomato soup, you add one can of water to the condensed soup. why is this dilution?
Nastasia [14]
Dilution refers to decreasing the ratio of total solution to the reference solution by the addition of other liquids. By adding water to tomato soup, the balance of “tomato soup” molecules decreases from 100% tomato soup, to eventually 1:1 TS and Water (50%), and so on. Chemically, you can observe this as decreasing the concentration of tomato soup in this solution.
8 0
3 years ago
Which of the following elements is the least reactive metal? Sodium, Rubidium, Chlorine, and Magnesium.​
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First off chlorine is not a metal so you can ignore that one.

Sodium and Rubidium are in group 1 of the periodic table and Magnesium is in group 2.

Group one metals are more reactive than group two because it is harder for the group two metals to lose their 2 valence (outer most) electrons.

As you go down group 1 there is an increase in the reactivity this is because as you go down there is an increase in the atomic radius which leads to more shielding. This weakens the electrostatic forces of attraction making it easier to lose the outermost electrons, therefore they are more reactive.
6 0
2 years ago
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