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2 years ago

Which answer below correctly identifies the type of change and the explanation for the boiling of water?

Chemistry

2 answers:

lesantik [10]2 years ago

7 0

Boiling Water is a physical change. When water gets to a certain temperature, it's boiling point starts.

Vesnalui [34]2 years ago

6 0

Boiling is when a liquid is being converted to a gas. but the ending product is still the same molecule. in other words, when you boil water to become vapor, the liquid before was liquid water (H2O) and the vapor after is still a water but now in a gaseous state. because the molecule is the same, we can say that boiling is a physical change.

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Pls help it's about density

Vaselesa [24]

1. 100.67
2. 168.55
3. 2.747
So I’m not sure if 2 or 3 are right sorry

4 0

3 years ago

Molecules of sugar are attracted to each other and form crystals. If you place sugar in water, the crystals break apart, but the

suter [353]

Answer:

Explanation:

So here's the thing . Sugar molecule is a molecular solid . It a relatively weak molecule

We all know the formula of glucose ( which is a sugar type molecule ) which is C12 H22 O 11 . This is basically bonded together by dipole dipole forces ( remember that this force of attraction is weak ) .on the other hand you have the solution ( which is usually water) .water is held by strong attraction forces known as hydrogen bonding .since this type of bonding is greater than dipole dipole forces .therefore when glucose is dropped in water . water is easily able to obercome the forces that are keeping the glucose molecule intact . therefore the molecule dissolves and breaks into pieces. Hope this helps

3 0

2 years ago

What are the fields of science??

Alex Ar [27]

Answer:

Life science is alternatively known as biology, and physical science is subdivided into branches: physics, chemistry, astronomy and Earth science. These branches of natural science may be further divided into more specialized branches. But that is more writting to explain

Explanation:

7 0

3 years ago

in example 5.11 of the text the molar volume of n2 at STP is given as 22.42 L/mol how is this number calculatd how does the mola

Valentin [98]

Answer:

V = 22.42 L/mol

N₂ and H₂ Same molar Volume at STP

Explanation:

Data Given:

molar volume of N₂ at STP = 22.42 L/mol

Calculation of molar volume of N₂ at STP = ?

Comparison of molar volume of H₂ and N₂ = ?

Solution:

Molar Volume of Gas:

The volume occupied by 1 mole of any gas at standard temperature and pressure and it is always equal to 22.42 L/ mol

Molar volume can be calculated by using ideal gas formula

PV = nRT

Rearrange the equation for Volume

V = nRT / P . . . . . . . . . (1)

where

P = pressure

V = Volume

T= Temperature

n = Number of moles

R = ideal gas constant

Standard values

P = 1 atm

T = 273 K

n = 1 mole

R = 0.08206 L.atm / mol. K

Now put the value in formula (1) to calculate volume for 1 mole of N₂

V = 1 x 273 K x 0.08206 L.atm / mol. K / 1 atm

V = 22.42 L/mol

Now if we look for the above calculation it will be the same for H₂ or any gas. so if we compare the molar volume of 1 mole N₂ and H₂ it will be the same at STP.

6 0

3 years ago

Which property is shared by both acids and bases?

Evgen [1.6K]

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3. Conducts electricity in aqueous solution.

Thanks
Hope it helps.

3 0

2 years ago