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DENIUS [597]
3 years ago
10

Tierra is playing in her backyard when she hears her friend calling out to her. She can't see her friend but can hear her friend

's voice. Which wave phenomenon helps explain why Tierra can hear her friend even when she can't see her?
Chemistry
2 answers:
MatroZZZ [7]3 years ago
5 0

nope sorry i pressed on the wrong question

mixer [17]3 years ago
4 0

Answer:

diffraction

Explanation:

the correct answer is diffraction

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In the reversible reaction: 2NO2 (g) ⇌ N2O4 (g) the formation of dinitrogen tetroxide releases heat and the formation of nitroge
xenn [34]

Answer: Option (B) is the correct answer.

Explanation:

According to Le Chatelier's principle, any disturbance causes in an equilibrium reaction will shift the equilibrium in a direction that will oppose the change.

For example, 2NO_{2}(g) \rightleftharpoons N_{2}O_{4}(g)

When we increase the temperature then the reaction will shift in a direction where there will be decrease in temperature.

This, means that the reaction will shift in the backward direction.

Thus, we can conclude that if the reaction is at equilibrium and the temperature increases, the equilibrium will shift so that there is more nitrogen dioxide.

7 0
3 years ago
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What is the progression of a space rock as it from space to Earth’s surface?
Bezzdna [24]

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3 0
4 years ago
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What is the volume of 9.5 g fluorine gas, F2, at STP?
Tju [1.3M]

Answer:

5.6L

Explanation:

At STP, the pressure and temperature of an ideal gas is

P = 1 atm

T = 273.15k

Volume =?

Mass = 9.5g

From ideal gas equation,

PV = nRT

P = pressure

V = volume

n = number of moles

R = ideal gas constant =0.082J/mol.K

T = temperature of the ideal gas

Number of moles = mass / molar mass

Molar mass of F2 = 37.99g/mol

Number of moles = mass / molar mass

Number of moles = 9.5 / 37.99

Number of moles = 0.25moles

PV = nRT

V = nRT/ P

V = (0.25 × 0.082 × 273.15) / 1

V = 5.599L = 5.6L

The volume of the gas is 5.6L

5 0
3 years ago
1. Estuaries may be either brackish or<br> freshwater systems.<br> True<br> O False
zzz [600]

Answer:

False - Estuaries are formed due to both brackish and freshwater.

Explanation:

Hope this Helps!!!

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Oxidation number of strontium
Ymorist [56]

Answer:

The oxidation number of strontium is +2.

Explanation:

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