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blsea [12.9K]
3 years ago
15

Goggle meet - brx - tvyn - oge

Chemistry
1 answer:
svp [43]3 years ago
5 0

Answer: um ok...

Explanation: are u saying to join??

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The 2nd Law of Thermodynamics states that when energy is converted from one form to another, some is always lost due to _____, w
Vinil7 [7]
<h2>Enthalpy Difference</h2>

Explanation:

  • The 2nd Law of Thermodynamics states that when energy is converted from one form to another, some is always lost due to difference in the enthalpy of the system, which always increases.
  • Enthalpy may be defined as the amount of energy that is stored.
  • During a chemical reaction, the system will absorb or gives out energy in the form of heat and light.
  • The change in energy during a chemical reaction is due to the difference in the energy amount of reacting species and species that are formed.
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3 years ago
You begin pouring sodium chloride into a glass of water. For a long time, the sodium chloride just dissolves in the water, but s
zvonat [6]

Download the app called Socratic it helps with this

8 0
3 years ago
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I need to rearrange the letters to form a word. plz help
alekssr [168]
12. Substances

13. Isotopes

14. Atomic 

Hope I Helped!
4 0
3 years ago
If 1.85 g Al reacts with an excess copper(II) sulphate and the percentage yield of Cu is 56.6%, what mass of Cu is produced
timofeeve [1]
We have a balanced equation: 
2 Al+ 3 CuSO4 ⇒ Al2(SO4)3+ 3 Cu

1.85 g Al* (1 mol Al/ 26.98 g Al)* (3 mol Cu/ 2 mol Al)* ( 63.55 g Cu/ 1 mol Cu)= 6.54 g Cu.
(Note that the units cancel out so you get the answer)

6.54 g Cu* (56.6/100)= 3.70 g Cu.

The final answer is 3.70 g Cu~
7 0
4 years ago
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TV and radio stations transmit in specific frequency bands of the radio region of the electromagnetic spectrum.
Elodia [21]

Answer:

a) Yes, these bands of signals overlap.

b) FM has broader transmission band.

Explanation:

a) Frequency range of TV channels = 59.5 to 215.8 MHz

Wavelength range of FM radio = 2.78 m to 3.41 m

Frequency of the wave = \nu

Wavelength of the wave = \lambda

Speed of light = c = 3\times 10^8 m/s

\nu =\frac{c}{\lambda }

Frequency of wave with, \lambda = 2.78 m

\nu =\frac{3\times 10^8 m/s}{2.78 m}=1.079\times 10^8 Hz

1.079\times 10^8 Hz=1.079\times 10^8\times 10^{-6} MHz=107.9 MHz

Frequency of wave with, \lambda = 3.41m

\nu =\frac{3\times 10^8 m/s}{3.41 m}=8.798\times 10^7 Hz

8.798\times 10^7 Hz=8.798\times 10^7\times 10^{-6} MHz=87.98 MHz

Frequency range of FM = 87.89 to 107.9 MHz

Frequency range of TV channels = 59.5 to 215.8 MHz

Yes, these bands of signals overlap.

b)  

Frequency range of AM = 550 to 1600 kHz

1 kHz = 0.001 MHz

550 to 1600 kHz = 550\times 0.001 MHz to 1600\times 0.001 MHz

= 0.55 MHz to 1.6 MHz

Frequency range of AM = 0.55 to 1.6 MHz

Frequency range of FM = 87.89 to 107.9 MHz

FM has broader transmission band.

4 0
3 years ago
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