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3 years ago

Why is food coloring added to water and it turning blue is a physical change

Chemistry

1 answer:

adell [148]3 years ago

4 0

Answer:

No new substance is formed.

Explanation:

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Thermal energy is transferred from?

aliina [53]

Answer:

chemical and electrical ( and sometimes nucelar)

Explanation:

4 0

3 years ago

Read 2 more answers

How many molecules of excess reactant remain after the reaction is complete?

vazorg [7]

8

It’s 8 bc I said it was 8 ;)

5 0

3 years ago

What is the energy of an electromagnetic wave with a frequency of 8•10^12 Hz?

aniked [119]

Hello!

Find the Energy of the Photon by Planck's Equation, given:

E (photon energy) =? (in Joule)

h (Planck's constant) = $6.626*10^{-34}\:J * s$

f (radiation frequency) = $8*10^{12}\:Hz$

Therefore, we have:

$E = h*f$

$E = 6.626*10^{-34}*8*10^{12}$

$E = 53.008*10^{-34+12}$

$E = 53.008*10^{-22}$

$\boxed{\boxed{E = 5.3008*10^{-21}\:Joule}}\end{array}}\qquad\checkmark$

I Hope this helps, greetings ... DexteR! =)

8 0

3 years ago

What is the molar mass of tin?

docker41 [41]

Remember Tin isn’t Ti, it’s actually Sn and by looking at the periodic table you find it is 118.7 g

3 0

3 years ago

What electrically neutral atom will have an electron configuration of 1s2 2s2 2p4?

abruzzese [7]

Answer:- oxygen.

Explanations:- The electronic configuration is given and we are asked to figure out the electrically neutral atom that will have the electron configuration, $1s^22s^22p^4$ .

The sum of electrons for this electron configuration is 8. If we look at the periodic table then 8 is the atomic number of oxygen.

So, the electrically neutral atom for the given electron configuration is oxygen.

6 0

3 years ago