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3 years ago

HELP PLEASE: Increasing ____ raises the boiling point of a liquid.

Chemistry

2 answers:

Art [367]3 years ago

7 0

Pressure raises the boiling point

Andrew [12]3 years ago

3 0

Answer:

b. pressure

Explanation:

The boiling point of a substance increases as the pressure increases. The boiling points of a liquid is the temperature at which the liquid converts to vapor. At this point the vapor pressure of the liquid is equal to the pressure surrounding the liquid.

Heating increases the temperature of liquid, thereby increasing the pressure . As pressure increases the energy required to boil also increases, causing an increase in the boiling points.

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Is this line real or imaginary?

irga5000 [103]

Answer:

imaginary because i see no line.

Explanation:

8 0

3 years ago

Aqueous sulfuric acid reacts with solid sodium hydroxide to produce aqueous sodium sulfate and liquid water. If 1.92 g of sodium

Oksana_A [137]

Answer:

The % yield is 27.0 %

Explanation:

Step 1: Data given

Mass of sulfuric acid = 4.9 grams

Mass of sodium hydroxide = 7.8 grams

Mass of sodium sulfate produced = 1.92 grams

Molar mass H2SO4 = 98.08 g/mol

Molar mass NaOH = 40 g/mol

Molar mass Na2SO4 = 142.04 g/mol

Step 2: The balanced equation

H2SO4 + 2NaOH → Na2SO4 + 2H2O

Step 3: Calculate moles H2SO4

Moles H2SO4 = Mass H2SO4 / Molar mass H2SO4

Moles H2SO4 = 4.9 grams / 98.08 g/mol =

Moles H2SO4 = 0.05 moles

Step 4: Calculate moles NaOH

Moles NaOH = 7.8 grams / 40 g/mol

Moles NaOH = 0.195 moles

Step 5: Calculate limiting reactant

For 1 mole H2SO4 consumed ,we need 2 moles NaOH to produce 1 mole Na2SO4 and 2 moles H2O

H2SO4 is the limiting reactant. It will completely be consumed (0.05 moles).

NaOH is in excess. There will react 2*0.05 = 0.1 moles

There will remain 0.195 -0.1 = 0.095 moles NaOH

Step 6: Calculate moles Na2SO4

For 1 mole H2SO4 consumed ,we need 2 moles NaOH to produce 1 mole Na2SO4

For 0.05 moles H2SO4, we have 0.05 moles Na2SO4

Step 7: Calculate mass of Na2SO4

Mass Na2SO4 = Moles Na2SO4 * Molar mass Na2SO4

Mass = 0.05 moles * 142.04 g/mol = 7.102

This is the theoretical yield

Step 8: Calculate the percent yield of Na2SO4

% yield = (actual yield / theoretical yield) * 100%

% yield = (1.92 / 7.102) *100% = 27.0 %

The % yield is 27.0 %

7 0

4 years ago

The nucleus of a Helium atom has a charge equal to twice the proton's charge. Let FN denote the magnitude of the force the Heliu

pshichka [43]

FN = Fe

Explanation:

Although the charge aren't the same, it should be equal to the magnitude of the forces. The coulomb force governs between both the nucleus and the electron, which is equal to the charge element.

The FN and Fe magnitudes somehow have to be equal, because the ordering does not apply in the multiplication.

There is a much more specific explanation, however, for such powers to be equivalent: they are the relationship pair of the third law of Newton, which has the same in scale and the direction opposite .

5 0

3 years ago

what is matter that can not be divided into two or more diffrent types of matter by any physical or chemical called/

VikaD [51]

Answer an atom

Explanation:

6 0

4 years ago

How and why does heat affect matter (pls explain thoroughly)

slava [35]

Answer:

Solids, liquids and gases all expand when heat is added

Explanation:

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. ...

4 0

3 years ago