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Luden [163]
3 years ago
12

Cereal is an example of what type of matter?

Chemistry
2 answers:
BARSIC [14]3 years ago
6 0
Cereal is an example of heterogeneous mixture since you can separate the pieces by either color, size, shape, etc..
Elena L [17]3 years ago
5 0
A heterogeneous mixture since you can separate the ingredients that make it up.
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A photon has a wavelength of 750 no. What is the energy in joules
zhuklara [117]

Answer:

750

Explanation:

750

8 0
3 years ago
. A bright violet line occurs at 435.8 nm in the emission spectrum of mercury vapor. What amount of energy, in joules, must be r
Tom [10]

Answer :  The energy released by an electron in a mercury atom to produce a photon of this light must be, 4.56\times 10^{-19}J

Explanation : Given,

Wavelength = 435.8nm=435.8\times 10^{-9}m

conversion used : 1nm=10^{-9}m

Formula used :

E=h\times \nu

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

So, E=h\times \frac{c}{\lambda}

where,

\nu = frequency

h = Planck's constant = 6.626\times 10^{-34}Js

\lambda = wavelength = 435.8\times 10^{-9}m

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

Now put all the given values in the above formula, we get:

E=(6.626\times 10^{-34}Js)\times \frac{(3\times 10^{8}m/s)}{(435.8\times 10^{-9}m)}

E=4.56\times 10^{-19}J

Therefore, the energy released by an electron in a mercury atom to produce a photon of this light must be, 4.56\times 10^{-19}J

3 0
3 years ago
Which of these is a chemical property of a substance?
dlinn [17]

Answer:

Reactivity

Explanation:

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3 years ago
Olivia, a Latina student, is told that she can check only two books out of the library at a time, but Leann, a white student, is
Sliva [168]

Answer:

a

Explanation:

the others are rude, and rather support this, while a helps to support the ending of white privlige

4 0
3 years ago
Read 2 more answers
The least massive of all the alkaline earth metals. Who<br> am I?
Elden [556K]

Answer:argon

Explanation:

5 0
3 years ago
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