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Stella [2.4K]
4 years ago
6

How many moles of chromium are present in 13.7 grams of chromium metal? Give your answer to 3 decimal

Chemistry
1 answer:
Alex4 years ago
6 0
7.834 i'm sorry if its wrong i might have done some wrong calculations 
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How might you explain the difference between the pH values of the 0.01 M HCl (pH = 1.1) and the 0.01 M HC2H3O2 (pH = 3.6)? HCl p
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<h3><u>Answer;</u></h3>

HCl dissociates more.

<h3><u>Explanation</u>;</h3>
  • HCl is a strong acid while HC2H3O2 is a weak acid. A strong acid such as HCl ionizes or dissociates completely in an aqueous solution by losing one proton.
  • A weak acid is one that does not dissociate completely in solution; this means that a weak acid does not donate all of its hydrogen ions (H+) in a solution. For example; HC2H3O2.
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3 years ago
Is the part of an experiment that is not being tested and is used for comparison​
Vera_Pavlovna [14]

Answer:

Independent variable

Explanation:

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3 years ago
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Why do we put these three words together in the 'fire triangle'?
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The three word of this is to represent what it takes to create and maintain a fire
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3 years ago
In class, students were given the following problem: "Aluminum satellite dishes resist corrosion because aluminum reacts with ox
Alexeev081 [22]
Hello! 

the correct setup is shown at bottom of your question

we get

total moles*(1/102.0 g/mol)= total grams Al2O3

hope this helps. any questions please ask. thank you kindly
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3 years ago
How many atoms are in 9.35 moles of lithium?
Fudgin [204]

Answer:

3.45 moles Li  contains  2.08 × 10 (to the power of)24  atoms .

Explanation:

The relationship between atoms and moles is:

1  mole atoms =

6.022 × 10 (to the power of)23

atoms

In order to determine how many atoms occupy a given number of moles, multiply the given moles by  

6.022 × 10 (to the power of)23

atoms/mole

.

In the case of 3.45 moles lithium (Li):

3.45 mol Li × 6.022 × 10 (to the power of)23  atoms Li/ 1 mol Li =

2.08 × 10 (to the power of)24

atoms Li  rounded to three

6 0
3 years ago
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