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quester [9]
3 years ago
13

What is the number of moles of solute in 250 mL of a .80M solution

Chemistry
1 answer:
Illusion [34]3 years ago
8 0

Answer:

There are 0.1 moles of solute in 250 mL of 0.4 M solution

Explanation:

because it is

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What is condensation ?
fomenos

Answer:

gvapor or gas to liquid

Explanation:

water which collects as droplets on cold surface when humid air is in contact with it

3 0
3 years ago
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Arrange the following atoms in order of increasing first ionization energy: He, Be, Se, Ne
Alex17521 [72]

Answer:

Be (899 kj/mol) , Se (940.9 kj/mol), Ne(2081 kj/mol), He (2370 kj/mol),

Explanation:

For noble gases as they have complete octet so they require high amount of energy to remove the electron.

Trend along period:

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required.

Trend along group:

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

As the size of atom increases the ionization energy from top to bottom also  decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.

8 0
3 years ago
Which is the balanced chemical equation representing the reaction between barium sulfide and platinum fluoride? BaS + PtF2 BaF2
Svetllana [295]

BAS might be an improperly capitalized: BAs, BaS

PTF2 might be an improperly capitalized: PtF2

BAF2 might be an improperly capitalized: BaF2

PTS might be an improperly capitalized: PtS

8 0
3 years ago
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The table below gives the masses of two different subatomic particles found in an atom.
kap26 [50]
I think the subatomic particles that are paired with each of their corresponding name would be :
1. X , proton and z, electron

hope this helps
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3 years ago
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A sample of hydraulic acid has a volume of 2.3L. What is the volume of acid in gallons?
Assoli18 [71]

0.60759572 gal  is the volume of acid in gallons  in a sample of hydraulic acid .

<h3>What do mean by the term "gallons" ?</h3>

The gallon is a unit of measurement for volume and fluid capacity in both the US  units and the British imperial systems of measurement.

In SI base units, 1 Gal is equal to 0.01 m/s²

Since ,

1 L, l = 0.2641720524 gal

now, volume of acid in gallons is given by -

2.3 L, l = 2.3 × 0.2641720524 gal

=0.60759572 gal

Hence , 0.60759572 gal is the volume of acid in gallons  in a sample of hydraulic acid .

Learn more about gallon ,here:

brainly.com/question/14296555

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2 years ago
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