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Zarrin [17]
3 years ago
5

If the pressure of a gas is 2.42 atm, what is its pressure in kPa?

Chemistry
2 answers:
Inessa [10]3 years ago
4 0
KPa = atm x 101.325
kPa = 2.42 x 101.325
kPa = 245
Lina20 [59]3 years ago
4 0

Answer is: 245 kPa.

1 atm = 101.325 kPa.

p = 2.42 atm; the pressure of the gas.

p = 2.42 atm · 101.325 kPa/atm.

p = 245.20 kPa.

Atmospheric pressure (atm) is the force per unit area by the weight of air above that point.

Kilopascal (kPa) is a metric system pressure unit and equals to 1000 force of newton per square meter.

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As electrons fall from high energy orbitals to lower orbitals, energy is released in the form of electromagnetic radiation. The
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The electronic transition that will produce the lowest frequency is an electron falling from the 3rd to the 2nd energy level.

The question is incomplete, the complete question is;

As electrons fall from high energy orbitals to lower orbitals, energy is released in the form of electromagnetic radiation. The farther the electron falls, the more energy is released. Which of the following electronic transitions would produce a wave with the lowest frequency?  

an electron falling from the 6th to the 2nd energy level  

an electron falling from the 5th to the 2nd energy level  

an electron falling from the 3rd to the 2nd energy level  

an electron jumping from the 1st to the 2nd energy level

According to Bohr's theory, energy is absorbed or emitted when an electron moves from one energy level to another. This energy often occurs as visible light of known frequency and wavelength.

The magnitude of frequency of light depends on the difference in energy between the two energy levels. If the difference between the energy levels is high, the frequency of light is also high and vice versa.

The transition from 3rd to the 2nd energy level represents a low frequency transition because the energy levels are close together.

Learn more: brainly.com/question/10675485

3 0
2 years ago
Consider the following reaction at 298K.
earnstyle [38]
2Cr”(as)+hc(g)>2Cr(s)+6H*(sa)
3 0
3 years ago
If you want 370 mL of 2.3 M AgNO3 solution, how many grams of AgNO3 do you need?
Allisa [31]

dont use that link its bad

8 0
2 years ago
When naming a compound made from a metal and a non-metal, what is done to the name of the second element?
RoseWind [281]
Metals combine with nonmetals to give ionic compounds. When naming binary ionic compounds, name the cation first (specifying the charge, if necessary), then the nonmetal anion (element stem + -ide). Hope this helps!
4 0
2 years ago
How many moles of chromium III nitrate are produced When chromium reacts with 0.85 moles of lead for nitrate to produce chromium
Pepsi [2]

0.85 moles formula units of lead nitrate will produce 0.57 moles formula units of chromium (III) nitrate.

<h3>Explanation</h3>

Typically, the oxidation state of Pb in lead nitrate tend to be +2. In other words, Pb in lead nitrate tends to exist as \text{Pb}^{2+} ions. The formula for a nitrate ion is {\text{NO}_3}^{-}. The charge on each of the nitrate ion is -1. The charge on the two ions should balance. As a result, each \text{Pb}^{2+} ion in lead nitrate would pair up with two {\text{NO}_3}^{-} ions. The formula for lead nitrate will be \text{Pb}({\text{NO}_3})_2. Each formula unit of lead nitrate will contain one \text{Pb}^{2+} ion and two {\text{NO}_3}^{-} ions.

The "III" in the name "chromium (III) nitrate" is a Roman Numeral. It indicates that the oxidation state of Cr in chromium (III) nitrate is +3. The Cr in that compound will exist as \text{Cr}^{3+}. Similarly, each \text{Cr}^{3+} will pair up with three {\text{NO}_3}^{-} ions. The formula for chromium (III) nitrate will be \text{Cr}(\text{NO}_3})_3. Each formula unit of chromium (III) nitrate will contain one {\text{NO}_3}^{-} ion and three {\text{NO}_3}^{-} ions.

0.85 moles formula units of lead nitrate will contain 0.85 × 2 = 1.7 moles of {\text{NO}_3}^{-} ions. Those nitrate ions will end up in 1.7 / 3 = 0.57 moles formula units of chromium (III) nitrate. As a result, the reaction will produce 0.57 moles formula units of chromium (III) nitrate.

7 0
3 years ago
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