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marta [7]
4 years ago
10

The device shows the relative humidity at 22°

Chemistry
2 answers:
ira [324]4 years ago
8 0

The answer is B. 11.6 g/m3. Hope I Helped!

sergeinik [125]4 years ago
4 0
The relative humidity shows us saturation of water in air. Since it is 58% and not 100% we have to scale density that we were given when humidity is 100%.

At 100% humidity, density is 20grams/cubic meter

at 58% it will be:
0.58 * 20 = 11.6 g/m^3

Since the question is to find density, the answer cannot be in %.

Answer is 11.6 g/m^3
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Given the balanced ionic equation:
bezimeni [28]

Answer : The correct option is, (4) 6.0 mol

Explanation :

The given balanced chemical equation is,

3Pb^{2+}+2Cr\rightarrow 3Pb+2Cr^{3+}

In this reaction, lead undergoes reduction and chromium undergoes oxidation.

Oxidation reaction : It is the reaction in which a substance looses its electrons. In this oxidation state increases.

Reduction reaction : It is the reaction in which a substance gains electrons. In this oxidation state decreases.

Half reactions of oxidation-reduction are :

Oxidation : 2Cr\rightarrow 2Cr^{3+}+6e^-

Reduction : 3Pb^{2+}+6e^-\rightarrow 3Pb

From the reduction reaction, we conclude that 6 moles of electrons gained by the 3 moles of lead ions.

Hence, the correct option is, (4) 6.0 mole

5 0
3 years ago
A sample of gas occupies 6. 8 L at 327 c what will be it volume at 27 c if the pressure and number of particles do not change
Vitek1552 [10]

A sample of gas occupies 6. 8 L at 327 c and the volume at 27 c if the pressure and number of particles do not change is 3.401 L.

<h3>What is volume?</h3>

Volume is a measurement of the three-dimensional space that is occupied. Numerous imperial units or the SI-derived units, such as the cubic meter and liter, are frequently used to quantify it numerically (such as the gallon, quart, cubic inch). Volume and the length (cubed) have a symbiotic relationship. The volume of a container is typically thought of as its capacity, not as the amount of the space it takes up. In the other words, the volume is the amount of fluid (liquid or gas) that the container may hold.

Volume was initially measured using naturally occurring vessels of a comparable shape and then with standardized containers. Arithmetic formulas can be used to quickly calculate the volume of the several straightforward three-dimensional shapes. If a formula for shape's boundary is known, it is possible to use integral calculus to determine the volumes of more complex shapes. No object in dimensions of zero, one, or two has volume; in the dimensions of four and above, the hypervolume is a concept similar to the standard volume.

In solving the any gas law problems, kelvin temperature will be used.

kelvin = degree celsius + 273.15

Kelvin = 327 + 273.15

                  = 600.15 K

Kelvin = 27 + 273.15

                  =  300.15 K

Given Data;

V_{1}(the initial volume) = 6.8 L                V_{2} (the final volume) = ? unknown

T_{1}(the initial temperature = 327 °C      T_{2}(the final temperature) = 27 °C

                                   =( 600.15 K)                                      = (300.15 K)

This problem can be solve using the Charles' Law which states that volume is directly proportional to kelvin temperature of gases if amount of gas and pressure are constant. If the temperature decreases, volume decreases.

Formula of the Charles' Law is \frac{V_{1} }{T_{1} }= \frac{V_{2} }{T_{2} }

To solve for V2, we can used formula V_{2} =\frac{V_{1}T_{2}  }{T_{1} }

V_{2} =\frac{V_{1}T_{2}  }{T_{1} }

    = 6.8 L × 300.15 K / 600.15 K       (cancel the unit kelvin)

    = 2041.02 L / 600.15

V_{2}= 3.401 L

Therefore, volume is 3.401 L

To know more about volume visit: brainly.com/question/1578538

#SPJ4

5 0
1 year ago
Please help<br><br> what are the 6 main points of the kinetic molecular theory
Darya [45]

Answer:The kinetic-molecular theory of gases assumes that ideal gas molecules (1) are constantly moving; (2) have negligible volume; (3) have negligible intermolecular forces; (4) undergo perfectly elastic collisions; and (5) have an average kinetic energy proportional to the ideal gas's absolute temperature.

Explanation:

6 0
2 years ago
How many grams of NaCI are contained in 350. mL of a 0.115 M solution of sodium chloride?
Sergio039 [100]

Answer: 2.35 (no unit given)

Explanation:

5 0
3 years ago
PLEASE HELP ME 15 POINTS AND BRAINLEST 1 MIN!!!!!<br><br> what is biology??????
kondor19780726 [428]
<span>the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution.</span>
5 0
3 years ago
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