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2 years ago

How do the melting and boiling points of pure water differ from those of a sugar-water solution?

2 answers:

8 0

For pure water, the boiling point is 100 degrees Celsius (212 Fahrenheit) at one atmosphere of pressure, and the melting point is 0 degrees Celsius (32 degrees Fahrenheit) at one atmosphere of pressure. At at high altitudes the lower pressure makes the boiling point several degrees lower. For example, in Denver, Colorado, the boiling point is about 95°C or 203°F.

Vesnalui [34]2 years ago

6 0

When a solute, sugar in this case, is added, the boiling point of the solution increases. Additionally, the melting point decreases.

To answer your question,

The boiling point of pure water is lower than sugar-water solution.

The melting point is higher for pure water than for sugar-water solution.

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3 years ago

A solution is made containing 4.6 g of sodium chloride per 250g of water.

lozanna [386]

Answer:

$\large \boxed{1.81 \, \%}$

Explanation:

$\text{Mass percent} = \dfrac{\text{mass of solute} }{\text{mass of solution}} \times 100 \, \%$

Data:

Mass of NaCl = 4.6 g

Mass of water = 250 g

Calculations:

Mass of solution = mass of NaCl + mass of water = 4.6 g + 250 g = 254.6 g.

$\text{\% m/m} = \dfrac{\text{4.6 g} }{\text{254.6 g}} \times 100 \, \% = \mathbf{1.81 \, \%}\\\\\text{The percent by mass of NaCl is $\large \boxed{\mathbf{1.81 \, \%}}$}$

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3 years ago

Compare and contrast elements and compunds

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Answer:

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Explanation: Google

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3 years ago

If the concentration of sugar in water is determined to be 45 g/100 ml and 135 g of sugar was used to make the solution how much

-BARSIC- [3]

Answer:

300g of water was used to make the solution

Explanation:

In the sugar solution, there are dissolved 45g of sugar in 100mL of water. The conversion factor is <em>45g Sugar = 100mL water</em>. That means when 135g of sugar are used the amount of water is:

135g sugar * (100mL water / 45g sugar) =

<h3>300g of water was used to make the solution</h3>

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2 years ago

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