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Anton [14]
2 years ago
13

PLEASE HELP I DONT UNDERSTAND; THANK YOU!

Chemistry
1 answer:
AURORKA [14]2 years ago
3 0

Answer:

Calculate the wavelength of the light emitted by a mercury lamp with a frequency of 6.88 x 10^14 Hz

(SHOW WORK):

e

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0.005 molar Ca(OH)2 solution is used in the titration.calculate the pH oh solution
Rus_ich [418]

Ca(OH)₂: strong base

pOH = a . M

a = valence ( amount of OH⁻)

M = concentration

Ca(OH)₂ ⇒ Ca²⁺ + 2OH⁻ (2 valence)

so:

pOH = 2 x 0.005

pOH = 0.01

pH = 14 - 0.01 = 13.99

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2 years ago
Water vapor forming droplets that form clouds directly involve which process
Vinvika [58]
It is formed when water vapor condenses.
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A cylinder with a movable piston originally has a volume of 2805 mL and is filled with nitrogen to a pressure of 4.00
Sergio039 [100]

This problem is providing the initial volume and pressure of nitrogen in a piston-cylinder system and asks for the final pressure it will have when the volume increases. At the end, the answer turns out to be 2.90 atm.

<h3>Boyle's law</h3>

In chemistry, gas laws are used so as to understand the volume-pressure-temperature-moles behavior in ideal gases and relate different pairs of variables.

In this case, we focus on the Boyle's law as an inversely proportional relationship between both pressure and volume at constant both temperature and moles:

P_1V_1=P_2V_2

Thus, we solve for the final pressure by dividing both sides by V2:

P_2=\frac{P_1V_1}{V_2}

Hence, we plug in both the initial pressure and volume and final volume in order to calculate the final pressure:

P_2=\frac{2805mL*4.00atm}{3864mL}\\ \\P_2=2.90atm

Learn more about ideal gases: brainly.com/question/8711877

6 0
2 years ago
Type the CONVERSION factor (fraction) to calculate the moles in 15.0 g
kari74 [83]

Explanation:

5g C7H8 / 92g/mole = 0.054moles

total moles = 0.232moles

mole fraction C6H12 = 0.178moles / 0.232moles = 0.767

mole fraction C7H8 = 0.233

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3 years ago
Examples of food types that contain potential energy
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Organic vitamens

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