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2 years ago

The molecule 2,2-diisopropylheptane is incorrectly named. what is the correct name?

1 answer:

5 0

Isopropyl is: CH3 - CH - CH3
      |

Heptane is: CH3 - CH2 - CH2 - CH2 - CH2 - CH2 - CH3

Then 2,2 isopropyl heptane is:

CH3 - CH - CH3
   |
CH3 - C - CH2 - CH2 - CH2 - CH2 - CH3
   |
CH3 - CH - CH3.

There you can count that the longest carbon chain has 8 carbon atoms.
So the right name is of an octane.

I will rearrange the chain to show the 8 carbon chain in a row:

   CH3   CH3
   | |
CH3 - CH -   C - CH2 - CH2 - CH2 - CH2 - CH3
      |
   CH3 - CH - CH3

Now, you can see that the right name is 3 isopropyl - 2, 3 dimethyl octane

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Answer:

The answer is viruses

Explanation:

Because it is a harmful software hidden inside another and usually performs a harmful action, such as destroying data.

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2 years ago

Why is it important to back up data on a computer before you burn-in test the cpu?

katen-ka-za [31]

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1 year ago

Use Excel to develop a regression model for the Consumer Food Database (using the "Excel Databases.xls" file on Blackboard) to p

m_a_m_a [10]

Answer:

Step 1 : Create an Indicator Variable for metro cities using formula mentioned in formula bar.

Step 2: Filter the Data on Metro cities i.e. select only those cities with Metro Indicator 1.

Step 3: Paste this filtered data to a new sheet.

Step 4: Go to Data - Data Analysis - Regression

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Please see attachment

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2 years ago

Which of the following statements regarding critical paths is true? a. On a specific project, there can be multiple critical pat

iVinArrow [24]

Answer:

Option a

Explanation:

The Critical Path Method is the arrangement of booked exercises that decides the term of the task. These planned exercises must be performed if the venture is to be viewed as a triumph.

Therefore, options b, c, d and e can't be true because:

b. Activities in the Critical Path Method has no or zero slack.

c. The duration of the critical path in CPM determined on the basis of the latest activity and the earliest initiation.

d. The CPM method schedules the activity of the longest duration.

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2 years ago

6. Write pseudo code that will perform the following. a) Read in 5 separate numbers. b) Calculate the average of the five number

Alex

Answer:

Pseudo CODE

n= Input “Enter 5 integer value”

sum=0.0

For loop with i ranging from 0 - 5

Inside loop sum=n[i]+sum

Outside loop avg= sum/5

Print avg

small=n[0] # assume the first number in the list is smallest

large= n[0] # assume the first number in the list is largest

For loop with i ranging from 0 - 5

Inside loop if n[i]<small #if any another number is smaller than small(variable)

Inside if Then small=n[i]

Inside loop if n[i]>large # if any another number is larger than large(variable)