Look up chromium on periodic table.
It's atomic number is 24.
It gives number of protons in an element.
Since the atom is uncharged (no extra or subtracted electrons), the number of protons will equal the number of electrons.

5 0

2 years ago

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How much tin (Sn) is in 5075 atoms of tin?

kkurt [141]

12937&37374+&22838338384

3 0

2 years ago

Help!

maks197457 [2]

Answer:

First 1-5 in pics

I can't upload further reactions

Explanation:

sandmeyer's reaction
swarts reaction
Finkelstein reaction
wurtz reaction
reimer teimann reaction

6. Lucas test

ROH + Zncl2 +HCl ---> RCl + H2O

7. esterification

R-OH +R’-COOH +H+↔ R’-COOR

3 0

1 year ago

(e)

mars1129 [50]

Answer:36g

Explanation:6.8:3.6=68:x

x=68*3.6/6.8=36

5 0

2 years ago