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andre [41]
3 years ago
13

With regards to a “Data (Age) Structure Diagram”, which of the following is an indicator of a rapidly growing population?

Chemistry
1 answer:
soldier1979 [14.2K]3 years ago
4 0
For a rapidly growing population is characterized by an increase in the number of young individuals, birth rates increased in comparison with mortality, and the age structure of the population gets the reproductive type In other words there is superiority of juveniles on the elderly and the relative decrease in mortality.


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A wide light source creates a shadow with two parts. from which part can the light source be partiallly seen?
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B) The light source can be seen from the penumbra.
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4 years ago
How many electrons are in the highest occupied energy level of a group 5A element?
seraphim [82]
As you know, an element'svalence electrons are simply theelectrons located on the outermost energy level, i.e. on thehighest occupied energy level. Therefore, you can say that anelement located in group 5A has 5 electrons on its highest occupied energy level. so the answer would be c.5
7 0
3 years ago
A balloon filled with helium has a volume of 4.5 × 103 L at 25°C. What volume will the balloon occupy at 50°C if the pressure su
Tom [10]

Answer:

V_2 = 4.87 * 10^3

Explanation:

This question is an illustration of ideal Gas Law;

The given parameters are as follows;

Initial Temperature = 25C

Initial Volume = 4.5 * 10³L

Required

Calculate the volume when temperature is 50C

NB: Pressure remains constant;

Ideal Gas Law states that;

PV = nRT

The question states that the pressure is constant; this implies that the constant in the above formula are P, R and n

Divide both sides by PT

\frac{PV}{PT} = \frac{nRT}{PT}

\frac{V}{T} = \frac{nR}{P}

Represent \frac{nR}{P} with k

\frac{V}{T} = k

k = \frac{V_1}{T_1} = \frac{V_2}{T_2}

At this point, we can solve for the required parameter using the following;

\frac{V_1}{T_1} = \frac{V_2}{T_2}

Where V1 and V2 represent the initial & final volume and T1 and T2 represent the initial and final temperature;

From the given parameters;

V1 = 4.5 * 10³L

T1 = 25C

T2 = 50C

Convert temperatures to degree kelvin

V1 = 4.5 * 10³L

T1 = 25 +273 = 298K

T2 = 50 + 273 = 323K

Substitute values for V1, T1 and T2 in \frac{V_1}{T_1} = \frac{V_2}{T_2}

\frac{4.5 * 10^3}{298} = \frac{V_2}{323}

Multiply both sides by 323

323 * \frac{4.5 * 10^3}{298} = \frac{V_2}{323} * 323

323 * \frac{4.5 * 10^3}{298} = V_2

V_2 = 323 * \frac{4.5 * 10^3}{298}

V_2 = \frac{323 * 4.5 * 10^3}{298}

V_2 = \frac{1453.5 * 10^3}{298}

V_2 = 4.87 * 10^3

Hence, the final volume at 50C is V_2 = 4.87 * 10^3

7 0
3 years ago
What is the molecular formula of CHN
melomori [17]
C=Carbon         Mass percent of: 44.4424 %
H=Hydrogen     Mass percent of:    3.7296 %
N=Nitrogen       Mass percent of:   51.8280 %
4 0
4 years ago
Read 2 more answers
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