School Help PLEASE ASAP

[kag]

1. nown Element: 92% of the atoms of an element have a mass of 28.0 atomic mass units, five percent have a mass of 29.0 atomic mass units and the remaining atoms have a mass of 30.0 atomic mass units. Calculate the average atomic mass and identify the element.
   
   
2. Carbon: 98.9% of the atoms of carbon-12 have a mass of 12.0 amu. 1.10% of the atoms of carbon-13 have a mass of 13.0 amu. Calculate the average atomic mass of the isotopes of carbon.
   
   
3. Nitrogen: 99.63% of the atoms of nitrogen-14 have a mass of 14.0 amu. 0.37% of the atoms of carbon-15 have a mass of 15.0 amu. Calculate the average atomic mass of the isotopes of nitrogen.
   
   
4. Chlorine: 75.77% of the atoms of chlorine-35 have a mass of 35.0. 24.23% of the atoms chlorine-37 has a mass of 37.0 amu. Calculate the average atomic mass of the isotopes of chlorine.
   
   
5. Silicon: 92.23% of the atoms of silicon-28 have a mass of 28.0 amu. 4.67% of the atoms silicon-29 has a mass of 29.0 amu. 3.10 % of silicon-30 has a mass of 30 amu. Calculate the average atomic mass of the isotopes of chlorine.
   
   if someone can do this i will love you forever

 

[FourBitPixel]

Do it yourself.

 

[Hurt]

My bad if I'm wrong but isn't #1 Nickel (Ni)?

 

[mai]

English please?

 

[Hurt]

English please?

It's in the most simplest forms these questions are ever going to be, just be glad the teacher didn't word them so it would be more difficult :rofl:

 

[mai]

It's in the most simplest forms these questions are ever going to be, just be glad the teacher didn't word them so it would be more difficult :rofl:

Okay im obv not advanced enough in science brain to comprehend such language. He's gonna need your help lol

 

[PurrfectMistake]

Tfw I didn't do science in highschool because it wasn't compulsary but religion was (fml)
Yet i've had enough religion shoved down my throat all my childhood that I knew everything anyway, all I did is bludge through the classes and always got B+'s/A's. kek

 

[kag]

Do it yourself.

It wouldn't be on here if I could do it myself.

 

[FourBitPixel]

It wouldn't be on here if I could do it myself.

Then why not do it?

 

[Hurt]

Then why not do it?

because he can't do it himself lol...

 

[FourBitPixel]

because he can't do it himself lol...

From above, he can. Nothing is stopping him from doing it.

 

[Hurt]

From above, he can. Nothing is stopping him from doing it.

But he doesn't know how to :/

 

[FourBitPixel]

But he doesn't know how to :/

That's why he/she is at school to learn.
kag It would be best to do it yourself and learn.

 

[kag]

That's why he/she is at school to learn.
kag It would be best to do it yourself and learn.

Its online I can't go ask a teacher.[DOUBLEPOST=1537721964][/DOUBLEPOST]

1.)
(28 x .92) + (29 x .05) + (30 x .03) = 18.74 amu /Element: Fluorine

Could you walk through how you got the numbers to do that.

 

[FelixDev]

Ouuuf