[Answered] How many oxygen atoms are in 3.00 g of sodium dichromate, Na2Cr2O7? A) 0.0801 oxygen atoms B) ...

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Author Question: How many oxygen atoms are in 3.00 g of sodium dichromate, Na2Cr2O7? A) 0.0801 oxygen atoms B) ... (Read 136 times)

jilianpiloj

Hero Member
Posts: 521

on: Aug 27, 2018

How many oxygen atoms are in 3.00 g of sodium dichromate, Na2Cr2O7?

A) 0.0801 oxygen atoms
B) 9.85 1020 oxygen atoms
C) 6.90 1021 oxygen atoms
D) 4.83 1022 oxygen atoms

Question 2

Ka for HX is 7.5 10-12. What is the pH of a 0.15 M aqueous solution of NaX?

A) 7.97
B) 1.96
C) 6.00
D) 8.04
E) 12.10

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xoxo123

Sr. Member
Posts: 335

Reply #1 on: Aug 27, 2018

Answer to Question 1

D

Answer to Question 2

E

jilianpiloj

Member
Posts: 521

Reply 2 on: Aug 27, 2018

Excellent

adf223

Member
Posts: 304

Reply 3 on: Yesterday

Wow, this really help

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