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3 years ago

Identify the approximate color you would expect if

Chemistry

2 answers:

Troyanec [42]3 years ago

6 0

You would expect a green to a blue color. Hope this helps :)

grin007 [14]3 years ago

3 0

Green or Blue depending on the reader

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meteorologist preparing a talk about global warming compiled a list of weekly low temperatures (in degrees Fahrenheit) he observ

Setler [38]

Answer:

Regarding Measures of center, the Mean will be smaller, and Median will not be affected. Thus, the median will not change, since the temperature was already low initially and only decreased. However, the median takes the average of all values into account, and if you substitute a value for a smaller value, the average decreases.

In relation to Measures of spread, the range and standard deviation will be larger, and the IQR will not change. Therefore, the range is the highest minus the lowest number; if the lowest number decreases sharply, the range increases. On the other hand, the IQR only counts the first and third quartile values. Therefore, since the value was already the lowest, if it is decreased, it will not change the IQR. However, the standard deviation will increase significantly, as the decreasing value of the lowest data point will increase the overall spread.

Explanation:

6 0

3 years ago

How is the atmosphere like an ocean

miss Akunina [59]

The ocean is primarily a liquid and the atmosphere is mostly gas, so they are different states of matter. They also have different chemical compositions which really ought to be common knowledge. Also, very few fish swim in the sky.

YEP

4 0

4 years ago

Read 2 more answers

Using the periodic table, complete the table to describe each atom. Type in your answers

Anit [1.1K]

Answer:

A: 4

B: 6

C: Be

D: 10

E: 22

F: Ne

Explanation:

The periodic table shows the elements ordered by atomic number in an arragement of 18 columns and 7 rows.

The atomic number is the number of protons of the elment and this identifies each element unequivocally.

Thus, once you know the atomic number you just need to locate the element in the periodic table and read the symbol and other data.

Other important definition that you need to know is:

Mass number = number of protons + number of neutrons

You also should know that the row represents the period of the element (which is the main energy level in the quantum model of the atom), and the column represents the group (e.g. grouo 1 = alkali metals, group 18 = noble gases).

1) A: atomic number

The first cell of the first row of the given table indicates that the number of protons is 4.

Then, per definition atomic number = number of protons = 4.

2) B: mass number

The mass number, A, of an element is equal to the number of protons (Z) plus the number of neutrons (N).

Z = A + N

From the table: A = 4 and N = 2. Thus:

Mass number = Z = 4 + 2 = 6

3) C: element (symbol)

Once, you know the number of protons (atomic number), you just need to locate the element in the table.

You will find that the element with the atomic number 4, is in the period (row) 2 and group (column) 2.

Its chemical symbol is Be and its name is berillyum.

4) D: number of protons

This is the next row of your table.

In the fourth cell of this secon row you can read that the atomic number is 10.

Then, as indicated above, per definition, the atomic number is the number of protons.

Thus, the number of protons is 10.

5) E: mass number

As said previously, the mass number is equal to the number of protons (Z) plus the number of neutrons.

You have:

Number of protons = atomic number = 10

Number of neutrons: 12

Mass number = 10 + 12 = 22

6) F: element (symbol).

In the periodic table, you locate the element with atomic number 10 in the column 18 (group of the noble gases) and the period (row) 2.

The element is neon and its chemical symbol is Ne.

3 0

4 years ago

What does this image represent?

Hunter-Best [27]

Explanation:

It represent Alcohol group (—OH)

8 0

3 years ago

How many moles of nitrogen, N, are in 76.0 g of nitrous oxide, N2O?

guapka [62]

If the balanced equation reads:

2N2 + O2 ———> 2N2O

You should have 1.72 moles of N2.

8 0

3 years ago

Read 2 more answers