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BARSIC [14]
3 years ago
6

hi friends my brain is mentally challenged so therefore i need someone to help with my science hw bc it’s 4 in the morning and i

wanna go to sleep

Chemistry
2 answers:
Viefleur [7K]3 years ago
7 0

Answer:

12. 2 protons and 2 neutrons

13. decreased by 2

14. Energy

15. None

16. I believe is also none

17. None

Sorry but its about 3: 52 am and a bit sleepy.

Hope these are good answers for you!

Explanation:

horrorfan [7]3 years ago
6 0

Answer:

Row 1: 12= 2 protons and 2 neutrons.

           13= decreases by 2

Row 2: 14= 1 proton

            15= None (I’m not sure about this one)

Row 3: 16= 1 high-energy electron

            17= Increases by 1 or 2 (This one I don’t get either)

Sorry it isn’t all perfect I haven’t done this topic in ages. I hope I got it all right for you.

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                               Mass  =  13.55 g.cm⁻³ × 3.4 cm³                ∴ 1 cm³ = 1 cc

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Putting values,

                               Moles  =  46.07 g ÷ 200.59 g.mol⁻¹

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Putting value of moles,

                               Number of Atoms  =  0.229 mol × 6.022 × 10²³

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