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valentinak56 [21]
3 years ago
6

Who is the intended audience?​

Chemistry
2 answers:
r-ruslan [8.4K]3 years ago
8 0

Answer:

From Middle school to college

storchak [24]3 years ago
3 0
Usually who you want your paper to be read by. For example “students need to spend less time on their phones” that is directed towards students. So students are the intended audience.
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Explain how astronomers use spectrographs to identify the composition of a star.
Gwar [14]
Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its composition based on these wavelengths. The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy.
hope this helps you! :-)
4 0
3 years ago
A sample of gas occupies 9.0 mL at a pressure of 500.0 mm Hg. A new volume of the same sample is at a pressure of 750.0 mm Hg. I
Ymorist [56]
The new pressure is larger than the original, the new volume is smaller than 9.0 ml and the new volume is 6.0 

good luck :D
3 0
3 years ago
Read 2 more answers
The work function is the energy that must be supplied to cause the release of an electron from a photoelectric material. The cor
vladimir2022 [97]

Answer:

No photoelectric effect is observed for Mercury.

Explanation:

From E= hf

h= Plank's constant

f= frequency of incident light

Threshold Frequency of mercury= 435×10^3/ 6.6×10^-34 × 6.02×10^23

f= 11×10^14 Hz

The highest frequency of visible light is 7.5×10^14. This is clearly less than the threshold frequency of mercury hence no electron is emitted from the mercury surface

3 0
4 years ago
Help please for chemistry class
IRISSAK [1]

Answer:

option c is correct

Explanation:

the addition of catalyst does not effect the position or equilibrium constant and increase the forward and backward reaction in equal rates so no effect would be observed

3 0
3 years ago
Is sublimation exothermic or endothermic
Masja [62]

Answer:

endormic

Explanation:

It occurs at a temperature and pressures below a substance's triple point on its phase diagram, which corresponds to the lowest pressure at which the substance can exist as a liquid

5 0
3 years ago
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