Answer:
Which best describes the geologic time scale? It explains why events happen throughout Earth’s history. It presents the correct sequence of events in Earth’s history. It is used to determine the absolute dates in years for different periods.
Answer:
Explanation:
In sulfur dioxide there are 32.06 grams of sulfur and 32 grams of oxygen .
In sulfur trioxide there are 32.06 grams of sulfur are combined with 48 grams of oxygen.
The ratio of oxygen which reacts with 32.06 gram of sulfur is 32: 48 .
This ratio is equal to 2 : 3.
This is in accordance with law of multiple proportion because , the ratio of mass of oxygen which reacts with constant mass of sulfur is integral ratio . Hence they are in accordance with law of multiple proportions.
Correct Answer: Option C
Reason:
Amines are <span>organic compound obtained from ammonia by replacement of one or more hydrogen atoms by organic groups.
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If one of the 'H' atom of NH3 is replace by R = alkyl group, they are referred as primary amine. If two 'H' atoms of NH3 are replace by same or different alkyl group, they are referred as secondary amine. If all the three 'H' atom of NH3 are replace by same or different alkyl group, they are referred as tertiary amine.
In present case, option C has 2 'H' atoms of NH3 replaced by alkyl group. Hence it is secondary amine.
The question gives us a conversion factor---> 1 mm3= 7.0 x 10^6 RBC. so, to find how many red blood cells we have, we first need to convert the Liters to cm3 using this conversion factor--> 1 mL= 1 cm3
i have attached how to solve this problem.
Answer: The correct answer is option E.
Explanation:
When (1R,2R)-1-chloro-2-methylcyclohexane is heated with a strong base such as NaOCH3, the predominant product will be an alkene.
It is important to note that when such compounds undergo elimination as a result of heat, the resultant product is usually an alkene.
The available options are:
A. 3-methylcyclohex-1-ene (racemic)
B. methylcyclohexene
C. (1S,2R)-1-methoxy-2-methylcyclohexane
D. (S)-3-methylcyclohex-1-ene
E. (R)-3-methylcyclohex-1-ene
F. (1R,2R)-1-methoxy-2-methylcyclohexane
The correct answer is E.
Therefore, the compound will undergo elimination reaction to give an alkene( . (R)-3-methylcyclohex-1-ene ).
