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kotykmax [81]
3 years ago
12

What is the reason for the emission of light after the gas in a discharge tube is excited?

Chemistry
1 answer:
Elena L [17]3 years ago
8 0

Answer:

c

Explanation:

took test on usa testprep

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Choose the best description of what is wrong with the following electron configuration for an electrically neutral atom of Chlor
Ksivusya [100]
I believe it is "There are low energy orbitals which have not been filled to hold the maximum number of electrons" because it went from 2p5 to 3s2 and it was supposed to go from 2p6 to 3s2. 

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Un-reactive elements include the last group of the periodic table.
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True:

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In water, compounds that releases __________ ions are known as _________
liberstina [14]

Answer:

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Explanation:

Hope this helps you

8 0
3 years ago
Read 2 more answers
A 100 gram block is placed on a scale that is known to have a 12% error. What will the scale read?
sesenic [268]

The scale will read <u>112 grams.</u>

Why?

Since we already know the percent error of the scale (12%) and we also know the mass of the block that is placed on the scale, we can calculate what will be the read of the scale by using the following formula:

ScaleRead=100g+(100g*\frac{12}{100})=100g+(100g*0.12)=100g+12g\\\\ScaleRead=112g

We can see that the scale will read 112 grams.

Let's verify that we are right by using the following formula to verify if the obtained value for the scale read will be 12%:

PercentError=\frac{ActualValue-RealValue}{RealValue}*100=\frac{112g-100g}{100g}*100\\\\PercentError=\frac{12g}{100g}*100=0.12*100=12(percent)

Hence, we can see that the scale will read <u>112 grams.</u>

Have a nice day!

7 0
4 years ago
Hurry and answer don't forget to show proof
stiv31 [10]

It will be B... I hope so. If i am wrong let me know

4 0
3 years ago
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