A gas occupies 0.105 L at 105 K. At what Celsius temperature will its volume be 0.140 L? Assume that pressure remains constant. It would be great if you could show work!
Answers
This problem can be solved using the Combined Gas Law. The formula for it is
Let's go ahead and plug in the known values. Since pressure remains the same, it does not matter what value we plug in, so let's assume 1 atm for both sides.
Now, we just need to solve for the unknown. Start by simplifying the left side and right numerator.
0.001 =
Multiply both sides by x.
0.001x = 0.140
Divide both sides by 0.001.
x = 140 K
Convert that to Celsius (K = C + 273)
140 = C + 273
C = -133
So, the volume of your gas will be 0.140 L at -133° C.
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Look at the diagram below.The diagram on the left represents ______. The diagram on the right represents ______.A. the specific heat of a system; the heat of vaporization of a liquidB. the release of heat by a system; the absorption of heat by a systemC. the absorption of heat by a system; the release of heat by a systemD. the heat of vaporization of a liquid; the specific heat of a system
which ones are acids and which ones are bases
Answers
Answer:
- HNO₃ and H₃O⁺ are acids
- H₂O and NO₃⁻ are bases
Explanation:
The chemical equation is:
- HNO₃ + H₂O → H₃O⁺ + NO₃⁻
There are several definitions of acid and bases: Arrhenius', Bronsted-Lowry's and Lewis'.
Bronsted-Lowry model defines and acid as a donor of protons, H⁺.
In the given equation HNO₃ is such substance: it releases an donates its hdyrogen to form the H₃O⁺ ion.
On the other hand, a base is a substance that accepts protons.
In the reaction shown, H₂O accepts the proton from HNO₃ to form H₃O⁺.
Thus, H₂O is a base.
In turn, on the reactant sides the substances can be classified as acids or bases.
H₃O⁺ contain an hydrogen that can be donated and form H₂O; thus, it is an acid (the conjugated acid), and NO₃⁻ can accept a proton to form HNO₃; thus it is a base (the conjugated base).
B.would be very weak
C.would occur as normal
Answers
Answer:
Option (B)
Explanation:
Lake effect snow generally occurs when the cold winds extracts the water content (moisture) from the relatively warmer lakes and carries further and precipitates back on the land areas in the form of snow. Much of the snow is originated from the lake Ontario and it deposits on the nearby terrestrial areas.
So, when the Lake Ontario is cold enough like the air mass that blows in the continental arctic, then it indicates that the lake effect snow would be comparatively very much weak.
Thus, the correct answer is option (B).
I hope this helps and have a wonderful day filled with joy!!
- Timarra <3
Answers
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 9.96×10⁻¹⁸moles of copper are in 6,000,000 atoms of copper.
What is mole?
The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. The stoichiometry in the balanced chemical equation represents the number of moles of respective element.
we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number
mole =given number of atoms ÷ 6.022×10²³(Avogadro number)
given number of atoms of copper =6×10⁶atoms
Substituting the values
mole of copper=6×10⁶÷ 6.022×10²³
moles of copper = 9.96×10⁻¹⁸moles
Therefore, 9.96×10⁻¹⁸moles of copper are in 6,000,000 atoms of copper.
To know more about mole, here:
#SPJ6
Answers
The answer is: the atom with more valence electrons are in the middle of a molecule and it form more bonds.
For example, molecule hydrogen cyanide (HCN).
Lewis structure for hydrogen cyanide is H:C:::N:
Hydrogen has valence one (I), it means it has one single bond and electron configuration like closest noble gas helium.
Carbon has valence four (IV), it has four bonds (one with hydrogen and three with nitrogen) and full octet.
Nitron has valence three (III), it has full octet and electron configuration like noble gas neon (Ne).
Hydrogen cyanide has linear shape (the bond angles of 180 degrees).
Answers
It's called an heterogeneous mixture :)
of water.
2 mL
200 mL
2L
200 L