The molarity of HCl after the first dilution is 0.024 M and after the second dilition, it is 0.0036M.
The problem at hand is a solution dilution problem in the field of Chemistry, usually tackled by the use of formula M1V1=M2V2, where M1 and V1 are the original molarity and volume, and M2 and V2 are the molarity and volume after dilution. In the first dilution, applying this formula gives (0.15 M)(4.00 mL) = (M2)(25.00 mL), solving for M2 gives a value of 0.024 M. The second dilution would similarly have the equation (0.024 M)(7.5 mL) = (M3)(50.0 mL), which gives M3 approximately 0.0036 M. Hence, the molarity of the first dilution would be 0.024 M and the molarity of the second dilution would be 0.0036 M.
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B.4
C.1
D.2
the answer is a
Answer:
Its a
Explanation:
I got that answer on my own not from the Question ;)
The third energy level in an atom, as described by quantum mechanics, contains three sublevels: the s, p, and d sublevels.
In the field of chemistry, the term energy level refers to the fixed amount of energy that a system described by quantum mechanics, such as a molecule, atom, electron, or nucleus, can have. Specifically, when we refer to the third energy level, we're talking about an energy state with the principal quantum number n=3.
For any energy level defined by the principal quantum number n, there are n sublevels. Therefore, in a third energy level (n=3), we have three sublevels. These would be the s, p, and d sublevels.
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Answer: Based on experimental data
Explanation: The hypothesis is not the ultimate proven theory, the more a preliminary assumption on the basis of which further research is carried out with the help of experiments in order to prove the hypothesis as accurate. If the experiments carried out showed that the hypothesis is wrong, it is necessary to revise the hypothesis and set up a new experiment.
b. reaction
c. dynamic
d. elementary
0.100 moles of Co2
Answer:
it would be OA that is negatively charged
B) coordinates
C) degrees
D) time zones
Answer is: D) time zones.
Earth is divided into 24 timezones.
Most timezones are exactly one hour apart.
Timezone is a region on Earth bounded by lines of longitude.
Coordinated Universal Time (UTC) is the basis for modern civil time.
For example, UTC±00:00 is the Western European Time (Ireland, Portugal and UK).
UTC+01:00 is Central European Time, West Africa Time.
The earth is divided in 24 time zones. The correct option is D.
The earth is divided into 24 time zones. Each time zone represents a region where the same standard time is used. These time zones are approximately 15 degrees of longitude wide and are centered on the Prime Meridian (0 degrees longitude).
As the Earth rotates 360 degrees in 24 hours, each time zone covers roughly 1 hour of time difference from its neighboring zones. Time zones are crucial for coordinating activities and scheduling across different regions, ensuring global synchronization and smooth functioning in a world that spans multiple longitudes.
Read more about earth here: brainly.com/question/25624188
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