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bogdanovich [222]
3 years ago
8

The graph below represents the solar intensity measured over one day in northern Canada. What is the most likely date?

Biology
1 answer:
Dmitry [639]3 years ago
6 0
It is important to note that the graph has 0 solar intensity for a long part of the day; around 16 hours. Only from 8 to 16 hours do we have significant sunlight.
This means that the length of day is very short during this time of the year;

The length of the day changes throughout they year; day is equal to night (12 hours each) during the solstices on March 21 and September 23 but during summer day is longer than night in the northern hemisphere; during winter it is smaller. THe smallest daylength is at December 21st (in the northern Hemisphere). This phenomenon is due to the tilt of the axis of the earth.

The correct answer is December 21; (if we talked about a place in the southern hemisphere, the answer would be March 21).
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How much 3M NaOH (MW=40) can be made from 10.0mL of a 10M solution?
vaieri [72.5K]

Explanation:

The given data is as follows.

              M_{1} = 3 M,           V_{1} = ?

              M_{2} = 10 M,         V_{2} = 10.0 ml

Therefore, calculate the volume of given solution as follows.

              M_{1} \times V_{1} = M_{2} \times V_{2}

Now, putting the given values into the above formula as follows.

            M_{1} \times V_{1} = M_{2} \times V_{2}

            3 M \times V_{1} = 10 M \times 10.0 ml    

                   V_{1} = 33.3 ml

or,                             = 0.033 L        (as 1 ml = 0.001 L)

Since, molarity of NaOH is given as 3 M and its volume is calculated as 33.3 ml.

           Molarity = \frac{\text{mass of solute}}{\text{molar mass of solute}} \times \frac{1}{\text{volume in L}}

               3 M = \frac{mass}{40 g/mol \times 0.033 L}

              mass = 3.96 g

Therefore, we can conclude that mass of NaOH is 3.96 g.

8 0
3 years ago
When comparing animal to plant cells, they are different in size, shape, and how they store energy. They have similarities, as w
fgiga [73]

Answer:

ribosome, cell membrane, nucleus

Explanation:

The organelles that perform similar functions in both plant and animal cells among the listed organelles would be <u>the ribosome</u>, <u>the cell membrane</u>, and <u>the nucleus.</u>

First of all, chloroplast and cell wall are limited to the plant cell only. Animal cells do not have these organelles.

The ribosome functions as the site of protein synthesis in both plant and animal cells. The cell membrane acts as a channel for the control of the movement of materials in and out of the cells and is found in both plant and animal cells. The nucleus is also present in both cells and serves as the control unit of the cell by housing the genetic materials and dictating how the cells will behave.

7 0
2 years ago
The layer inside earth that creates earths magnetosphere is called
____ [38]
The layer inside Earth that creates Earth's magnetosphere is the core.

hope this helps!
4 0
3 years ago
Which land biome covers the largest percentage of land?
velikii [3]
~Hello there!

Your question: Which land biome covers the largest percentage of land?

Your answer: Desert is the land biome that covers the largest percentage of land.

Hope this helps!
5 0
3 years ago
Read 2 more answers
Indicate at which step of the replication-transcription-translation process each type of RNA first plays a role. During which st
kolezko [41]

Answer:

<h2> Replication: DNA  into DNA, and RNA primer are required;</h2><h2>Transcription/RNA processing: pre mRNA and then mRNA;</h2><h2>Translation: tRNA, rRNA</h2>

Explanation:

1. During replication,  a semi-conservative copy of a DNA molecule is made with the help of various enzymes and RNA primer.

2. Transcription/RNA processing: mRNA

During transcription, the DNA "message" ( in the form of codon) is copied into  mRNA.

3. Translation: tRNA, rRNA

During translation, the information carried in the mRNA is translated into protein with the help of molecules of tRNA and rRAN to build a protein on the ribosomes.

6 0
3 years ago
Read 2 more answers
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