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3 years ago

Which of the following is a quantitative observation of the frog?

Chemistry

2 answers:

Nataliya [291]3 years ago

6 0

Quantitative means to count how many of something. The correct answer is B, It has two eyes. Hope this helps

ludmilkaskok [199]3 years ago

3 0

B should be the answer

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I need help!! Following measurements

Anna71 [15]

I am so sorry I do not know but I need to answer a question in order to ask one I hope u pass:))

5 0

2 years ago

Why does food need to be digested

OLga [1]

Answer:

Food has to be digested into smaller component nutrients that are then absorbed and used throughout your body. Calories in food provide your body with the energy it needs to complete vital processes such as cellular maintenance and reproduction, and respiration.

Explanation:

can i have a brainlist :)

5 0

3 years ago

Read 2 more answers

A student who stresses too much about his grades has incorrectly named an organic compound 3-propylhexane.

Brums [2.3K]

Answer:

None of these.

The correct answer should be, 4-ethylheptane.

Explanation:

In naming Alkanes, the general rules apply:

I. Identify the longest continuous carbon chain and name it as the root or parent name.

II. Identify any side chains and add their names and positions as a prefix to the parent chain.

III. When there are more than one type of side chain, name them alphabetically.

IV. Use hyphens between numbers and letters and commas between numbers.

V. Number your side chains to obtain the lowest number combinations possible.

For the above question,

first, attempt drawing only the carbon skeleton, of 3-propylhexane thus,

C-C-C-C-C-C

C-C-C

The longest continuous carbon chain (numbering from the top right) is 7 carbon atoms, hence, parent or root name is heptane. The 2 carbon atoms (at top left) not numbered make up the alkyl group called ethyl and since they are attached to carbon number 4 of the numbered carbon atoms ( whether the numbering is from top right to bottom right or vice versa ), their position and name should be written as a prefix to the parent name. That is why the organic compound is named, 4-ethylheptane.

Please note that in drawing the carbon skeleton of 3-propylhexane, the name is the same even if you start placing the bottom 3 carbon atoms on the 3rd carbon (top) from the left or from the right because the numbering can start from any side to achieve the lowest number combinations of numbering common Alkanes.

7 0

3 years ago

What are the horizontal rows on the periodic table numbered 1-7 called?

NeTakaya

Answer: They're called Periods

3 0

3 years ago

Read 2 more answers

Liquid A decomposes with nth-order kinetics in a batch reactor A->B, r =kca. the conversion of A reaches 50% in a five minute

Cloud [144]

Answer:

A) 1

B) 2.5

C) 3.32

Explanation:

The possibility of n=1 is not achievable in 20 minutes and 30 minutes as calculated n=1 for 10 minutes. The same conversion cannot be achieved for the rest of the time which is impossible as 75% conversion and it cannot be achieved at 10 min and 20 min at the same time

A) what is the order of the reaction if it takes 10 minutes to reach 75% conversion

= n ( order ) = 1

B) what is the order of reaction if it takes 20 minutes to reach 75% conversion

= n ( order ) ≈ 2.5

C) what is the order of reaction if it takes 30 minutes to reach 75% conversion

= n ( order ) ≈ 3.32

attached below is a detailed solution

8 0

3 years ago