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Anarel [89]
2 years ago
10

What is the temperature increase of 6.4 kg of water when it is heated by a 7.7

Chemistry
1 answer:
lianna [129]2 years ago
3 0
If you measure my hairline you will get about 90°
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Someone please help fast
Volgvan

Answer:

The last region should be right

Explanation:

3 0
3 years ago
The work function of palladium (Pd) is 5.22 eV. What is the minimum frequency of light to observe the photoelectric effect from
Ivan

Answer:

1)4×10^13Hz

2) 9.95×10-9J

Explanation:

From the image attached, it is clear that the work function of the palladium metal must first be obtained in joules. Then, the frequency is obtained from E=hf.

The kinetic energy if the photoelectrons is obtained as the difference between the energy of the photon and the work function of the metal.

4 0
3 years ago
Please help on how to solve this problem it’s for isotopes
wlad13 [49]

Mg-19:

#protons = 12

#neutrons = 7

#electrons = 12

Mg-40:

#protons = 12

#neutrons = 28

#electrons = 12

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2 years ago
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lina2011 [118]
The Cambrian period I think
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3 years ago
Which physical property of the water changes when it reaches its melting point
KiRa [710]
It's temperature changes!
6 0
3 years ago
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