Answer:
Compound A: 1-bromo-1-methylcyclohexane
Compound B: 1-methylcyclohex-1-ene
Explanation:
In this question, we can start with the <u>I.D.H</u> (<em>hydrogen deficiency index</em>):
In the formula we have 7 carbons, 13 hydrogens, and 1 Br, so:
We have an <u>I.D.H value of one</u>. This indicates that we can have a <u>cyclic structure or a double bond</u>.
We have to keep in mind that the Br atom must be bonded to a t<u>ertiary carbon</u>. <u>We can not have a double bond</u> because in the ozonolysis reaction we have only <u>1 product</u>, therefore, we can not have a double bond in the initial molecule (if we have a double bond in the initial molecule we will have more than 1 product in the ozonolysis reaction).
With this in mind, we will have a <u>cyclic structure</u>. If we have 7 carbons and we need a tertiary alkyl halide. We can have a cyclic structure of 6 members and a methyl group bonded to a carbon that also is bonded to a Br atom <u>(1-bromo-1-methylcyclohexane).</u>
In the reaction with 
we will have an <u>elimination reaction</u>. In other words, we have the production of a double bond inside of the cyclic structure <u>(1-methylcyclohex-1-ene)</u>.
See figure 1 for further explanations.
I hope it helps!
Answer:
D: chain of volcanoes circling the Pacific Basin
Explanation:
Titration experiments require the use of a burette. It is a long graduated glass tube held in place by a clamp stand. It has a tap fixture on the end that regulates the delivery of small volumes of liquid into a beaker in the titration process. Bunsen burners are used to heat substances and crucibles are used to hold items to be heated to high temperatures.
Epsom salt is MgSO4.
We assume x water of hydration in the crystalline form.
Molecular mass of MgSO4 = 24+32+4*16=120
Molecular mass of MgSO4.xH2O = 120+18x
By proportion,
2.000/0.977 = (120+18x)/120
Cross multiply
0.977(120+18x) = 120*2.000
from which we solve for x
17.586x+117.24 = 240
x=122.78/17.586
=6.980
Answer: there are 7 water of hydration in Epsom salt, according to the experiment.
Note: more accurate (proper) results may be obtained by using exact values (3-4 significant figures) in the molecular masses. However, since water of hydration is the nearest integer, using approximate values (to at least two significant figures) suffice.
