the radius of the Sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. Express
1 answer:
Explanation;
Writing scientific notation :
- Move the decimal to the left side until single digit of number remains before the decimal.
- Then we will count the number of times we moved the decimal. Write this number as the exponential power of number '10'.
- For Example:
Radius of the sun = 696,000.0 kilometer
Radius of the sun can also be written as =
Size of bacterial cell = millimeter
Size of bacterial cell can also be written as =
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Answer:
The concentration after 115 seconds is 0.0496 M
Explanation:
Applying integrated rate law for a first-order reaction, we will have;
where;
is the concentration at a time t
is the initial concentration
k is the rate constant for the reaction
t is the given time
Given;
= 0.05 M
k = 6.2 x 10⁻⁵ mol L⁻¹s⁻¹
t = 115 seconds
Substitute these values and solve for
Therefore, the concentration after 115 seconds is 0.0496 M
Answer:
Look at the pictures. On the 1 are compounds A and B. Compound c from b is on the 2nd image. Compound D is on 3rd image. Compound E is the same for compound C.
Explanation:
So for compound A sodium acetylide substitutes nucleophilicaly one Br on 1,12-dibromododecane. Then to obtain compound B sodium amide eliminates another Br. So for acetylene and alkene groups ozonolysis works the same way and we obtain diacid. Lyndlar catalyst works only on alkynes and make cis-alkenes from them. but we have a terminal alkyne for wich no isomers may occur. Pt reduction provides alkanes from both alenes and akynes. And sodium ammonia reduction works only on alkynes to provide trans-alkenes but, as I've said, isomers are not our case. So compounds E and C are the same and undergo same reaction with ozone.
