This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: How many oxygen atoms are in 3.00 g of sodium dichromate, Na2Cr2O7? A) 0.0801 oxygen atoms B) ... (Read 53 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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

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
Thanks for the timely response, appreciate it

sailorcrescent

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Electron Shells Determine the Reactivity of Atoms. Electron Shells Determine the Reactivity of Atoms.
Oxygen Equipment 2 Oxygen Equipment 2
Connecting a handheld digital storage oscilloscope to an oxygen sensor signal wire. The use of the ... Connecting a handheld digital storage oscilloscope to an oxygen sensor signal wire. The use of the ...
Oxygen Transport: The Roles of Hemoglobin and Myoglobin Oxygen Transport: The Roles of Hemoglobin and Myoglobin
How many atoms are in 3.00 moles of NA How many atoms are in 3.00 moles of NA
6. Nitric oxide reacts with oxygen to form nitrogen dioxide: 2 NO(g) + O2(g) ⇌ 2 NO2(g) What ... 6. Nitric oxide reacts with oxygen to form nitrogen dioxide: 2 NO(g) + O2(g) ⇌ 2 NO2(g) What ...
Video: What is an ecosystem?

For a complete list of videos, visit our video library