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FrozenT [24]
3 years ago
14

In the world of chemisty, a 'mole is a number of something ... a very lary large number of something.

Chemistry
1 answer:
yulyashka [42]3 years ago
5 0
Just as a dozen is 12 of something, a mole is about 6.02 * 10^23 of something .
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Calculate the hydrogen-ion concentration [H+] for an aqueous solution in which the hydroxide-ion concentration [OH-] is 1 x 10^-
Gemiola [76]

Answer:

pH = -(log 10^-10)

= -(-10)

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so the solution is basic in nature

7 0
4 years ago
What is the effect of adding heat to a gas at constant pressure?
Anna007 [38]
The pressure will continue to build up eventually causing a release of pressure or an explosion.
8 0
3 years ago
7.5 moles of nitrogen gas (N2) is formed in the following reaction. How many grams
AfilCa [17]

Answer:

Mass = 255 g

Explanation:

Given data:

Number of moles of nitrogen = 7.5 mol

Mass of ammonia formed = ?

Solution:

Chemical equation:

3H₂ + N₂      →    2NH₃

Now we will compare the moles of nitrogen and ammonia.

             N₂         :        NH₃

               1          :         2

              7.5       :       2/1×7.5 = 15

Mass of ammonia:

Mass = number of moles × molar mass

Mass = 15 mol × 17 g/mol

Mass = 255 g

6 0
3 years ago
How<br> many<br> molecules are in 8.55x10-15 moles of a substance
solniwko [45]

Answer:

Know this

1mole of a substance contains 6.022x10²³molecules

Now

8.55x10^-15moles x 6.022x10²³molecules/1mole

=5.15x10^9molecules.

6 0
3 years ago
Which piece of laboratory glassware did you find to be more efficient for the solvent extraction procedure, and why?
Anna [14]

Answer:

Condenser

Explanation:

Condenser is highly efficient when dealing with the vapors of the product are need to be liquified. It is mostly automated and regularly condenses the incoming vapors into liquid. It is very easy to use. All we have to do it to attach incoming and outgoing flow pipes and constantly monitor the flow of cold water through the condenser. It is made up of special kind of PYREX glass so that it won't break when dealing with steam.

7 0
4 years ago
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