Answer: You need a control group because......
Explanation: You need a control group in order to study if there is any difference in behavior between two groups when an external stimulant is introduced.
Answer: See the answer in image.
Explanation:
Answer:
For one atom of lithium -6 I will need_16.85____ atom of lithium -7 for an average atomic mass of 6.944 .
Explanation:
1 ) Let required atom be m .

6 + 7m = 6.944 + 6.944m
7 m - 6.944 m = .944
.056 m = .944
m = 16.85
The correct answer for this question is this one:
<span>2. acidic, because the anion hydrolyzes to a greater extent than the cation.
3. basic, because the cation hydrolyzes to a greater extent than the anion.
5. neutral, because the cation hydrolyzes to a greater extent than the anion.
7. neutral, because NH4OCN is a weak base/weak acid salt. 8. basic, because the cation and the anion hydrolyze to the same extent.
10. neutral, because the cation and the anion hydrolyze to the same extent.</span>
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