Chemistry, 04.09.2021 05:10 rodriguezscarlet1713
If electromagnetic radiation has a frequency of 2.0×1015s−1, what is the radiation’s energy?(1 point)
3.0 ×1048J
3.0 ×1048J
3.3 ×10−49J
3.3 ×10−49J
1.3 ×10−18J
1.3 ×10−18J
9.9 ×10−41J
9.9 ×10−41J
Answers: 2
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What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom
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Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.
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Chemistry, 22.06.2019 18:30
You open a can of soda at room temperature and hear a hiss. which of the following factors has changed inside the container? a.) atmospheric pressure b.) temperature of gas c.) type of gas d.) amount of gas
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If electromagnetic radiation has a frequency of 2.0×1015s−1, what is the radiation’s energy?(1 point...
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