You haven't attached any options but anyways, to help you with your question, elements belonging to the same group (e.g. alkali metals, noble gases) all have the same chemical properties. Hydrogen, for example, have the same properties with Sodium, Potassium and Lithium.
oh its a Chlorine isn't it....
it's electronic configuration is
2,8,7
so to make it 8 in its outermost shell it should gain 1 electron...
It is important to record all accidents and breakages that occur in the laboratory to prevent them from happening again.
<h3>What is laboratory accident?</h3>
Laboratory accident is defined as the type of accident that occurs in the laboratory leading to harm.
Example of laboratory accidents include the following:
- inhalation of toxic fumes,
- absorption of chemicals through the skin, and
- ingestion of toxic chemicals.
A record of these type of laboratory accidents would hel prevent it's reoccurrence.
Learn more about laboratory here:
brainly.com/question/26264740
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Answer:
The moles of O₂ which are present in the sample are 0.433. (<u>option D</u>)
Explanation:
We should apply the Ideal Gases Law, to solve this:
P . V = n. R. T
1.38 atm . 7.51L = n . 0.082 . 292K
(1.38 atm . 7.51L) / (0.082 . 292K) = n
0.433 moles = n
Answer:
Explanation:
The reaction between hydrogen and oxygen to yield water vapor has ΔH∘=− 484kJ. How much pV work is done, and what is the value of ΔE in kilojoules for the reaction of 0.50 mol of H2 with 0.25 mol of O2 at atmospheric pressure if the volume change is −5.6 L?
2H2(g)+O2(g)⟶2H2O(g)ΔH∘=− 484kJ
