1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lisov135 [29]
2 years ago
14

How many moles of hydrogen are contained in 55.90 g of ammonium dichromate, (NH4)2Cr2O7?

Advanced Placement (AP)
2 answers:
Virty [35]2 years ago
6 0
There are 252.07 grams of ammonium dichromate per mol of ammonium dichromate molecules. There are 8 atoms of hydrogen per molecule of ammonium dichromate.

Convert grams to mole of molecules. And then molecules to atoms.

55.90 / 252.07 = moles of molecules

Since there are 8 hydrogen per 1 molecule multiply this by 8.

55.90 * 8 / 252.07 = 1.77 moles of hydrogen

nadezda [96]2 years ago
5 0
To calculate the molar mass of a compound, you multiply the subscripts of each element times its molar mass (atomic weight in g/mol).
(NH
4
)
2
Cr
2
O
7
When there is no written subscript, it is understood to be
1
. Also, when elements are enclosed in parentheses, the subscripts on the inside are multiplied by the number outside the parentheses.
Molar Masses of the Elements
Nitogen:
14.007 g/mol

Hydrogen:
1.00794 g/mol

Chromium:
51.9961 g/mol

Oxygen:
15.999 g/mol
Molar Mass of Ammonium Dichromate
(
2
×
14.007
)
+
(
8
×
1.00794
)
+
(
2
×
51.9961
)
+
(
7
×
15.999
)
=
252.06 g/mol
You might be interested in
if you want to test the hypothesis that sandwiches that contain butter will attract more ants than sandwiches that do not contai
Mandarinka [93]

Answer:

independent samples because it would be easier to test how many ants would come

Explanation:

6 0
2 years ago
Which o the following best characterizes the passage as a whole
Korolek [52]
Answer: an informal, public voice
3 0
3 years ago
Pls help asap! i gave extra points for this question!
VikaD [51]

Answer:

C

Explanation:

3 0
3 years ago
You have 100 grams of sugar. Each sugar cookie requires 20 grams of sugar. Each peanut butter cookie requires 15 grams of sugar.
liraira [26]

Answer:4

Explanation:

8 0
2 years ago
Read 2 more answers
Ap statistics chapter 8 test
Paraphin [41]

Answer:

you cant ask for test answers on brainly. use quizlet or something else if you want !

Explanation:

3 0
2 years ago
Other questions:
  • What is the first stage of perception
    10·2 answers
  • Although the Anti-Federalists lost their main goal, what important task did they accomplish?
    6·1 answer
  • What is the role of the 10th amendment in limiting the national government’s power?
    8·1 answer
  • 11.) All the following might be determined by the franchiser in the franchise agreement EXCEPT
    9·1 answer
  • Awad
    9·1 answer
  • In the past we have always had a deep attachment for the ways of China and all of our institutions have been modeled upon those
    15·2 answers
  • Thirty-five years later, while I was lying awake nights, frustrated, unable to see a future, Mr. Rickey, by now the president of
    7·2 answers
  • NEED HELP WILL GIVE BRAINLIST
    8·1 answer
  • Darron is working on his algebra homework and needs to draw a linear function.
    10·2 answers
  • Which argument styles does the writer employ in ""The Grant Shapps Affair Is a Testament to Wikipedia's Integrity and Transparen
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!