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
since a placebo has no actual medical or physiological benefits, why does it sometimes seem to affect study participants​
BARSIC [14]

Answer: The placebo effect

Explanation: The placebo effect is defined as a phenomenon in which some people experience a benefit after the administration of an inactive substance or sham treatment. What exactly is a placebo? A placebo is a substance with no known medical effects, such as sterile water, saline solution, or a sugar pill.

7 0
2 years ago
There are 16 ounces in a pint, 2 pints in a quart, and 4 quarts in a gallon. How many ounces are in a 5.0 gallon container?
FromTheMoon [43]
The answer is 640 ounces in a 5.0 gallon container
3 0
3 years ago
The amount of mismanaged plastic globally is 31.9 million tonnesper year. If the US contributes .022 million tonnesper month, wh
Yanka [14]

Answer:

During the midst of the 2016 campaign, however, we faced “an abnormal situation: one of America’s two major parties has nominated an explicitly authoritarian candidate for the presidency,” which posed “a present danger to American democracy

Explanation:

During the midst of the 2016 campaign, however, we faced “an abnormal situation: one of America’s two major parties has nominated an explicitly authoritarian candidate for the presidency,” which posed “a present danger to American democracy

6 0
2 years ago
Which of the following is the BEST example of preserving folk culture?
nadezda [96]
A small community seems to be the best answer
8 0
3 years ago
Read 2 more answers
Last year, William purchased 85 shares of Stock A at $80 per share, 40 shares of Stock B at $225 per share, and a $1500 bond wit
andrew-mc [135]
It would be (D: Stock A And Stock B)
5 0
3 years ago
Read 2 more answers
Other questions:
  • Henry bought 4 pies, which he plans to share with a group of his friends. if there is exactly enough to give each member of the
    10·1 answer
  • List the normal sequence of steps in the breakdown of hemoglobin.
    13·2 answers
  • How did Europeans treat china during the 19th and 20th century? Where else did this happen?
    11·1 answer
  • The importance of natural selection to evolutionary psychology ??
    14·1 answer
  • I`ll make you the brainlliest!!!!
    5·2 answers
  • The action potential causes neurotransmitters to be released into the __________. A. myelin sheath
    14·2 answers
  • Do wavelength and frequently have a direct or an inverse relationship ??
    11·1 answer
  • Which of the following represents new land formed beneath the plates from divergent boundaries?
    12·1 answer
  • What does the size of the dividend per share of stock depend on?
    10·1 answer
  • Music Theory
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!