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Sedaia [141]
2 years ago
7

What do scientists mean when they refer to population

Chemistry
2 answers:
Luden [163]2 years ago
8 0

population is the number of species living in a given area if this is regarding biology or earth studies :)

jenyasd209 [6]2 years ago
8 0
The number of people
You might be interested in
You have 1 m3 of wood and 1 m3 of aluminum. which is heavier? prove your answer with calculation.
Oduvanchick [21]

You have 1 m³ of wood and 1 m³ of aluminum.

Aluminum is the heavier material with a higher density.

What is density?

The mass-to-volume ratio, or mass per unit volume, is known as density. It assesses how much material an object contains in relation to its volume (cubic metre or cubic centimeter). In essence, density is a measurement of how closely together matter is packed.

<u>Density of the wood =1500kg/1m³ = 1500kg/m³ ⟹ 1m³ has a mass of 1500kg Density of Aluminum(Al) =2700kg/m³ = 2700kg/m³⟹ 1m³ has a mass of 2700kg </u>

Therefore, Aluminum is the heavier material with a higher density.

To learn more about density from the given link below,

brainly.com/question/17590787

#SPJ4

5 0
2 years ago
What are the 4 physical changes you can observe?
RUDIKE [14]
1. ice melting 

<span>2. temperature going down at night </span>

<span>3. water evaporating (like a towel drying out) or water drop on the sink </span>

<span>4. dew forming on the mirror after a shower </span>
8 0
3 years ago
Read 2 more answers
A metal forms the fluoride MF3. Electrolysis of the molten fluoride by a current of 3.86 A for 16.2 minutes deposits 1.25 g of t
larisa86 [58]

<u>Answer: </u>The molar mass of the metal is 96.45 g/mol

<u>Explanation:</u>

The fluoride of the metal formed is MF_3

The oxidation half-reaction follows:

M\rightarrow M^{3+}+3e^-

Calculating the theoretical mass deposited by using Faraday's law, which is:

m=\frac{M\times I\times t(s)}{n\times F}       ......(1)

where,

m = actual mass deposited = 1.25 g

M = molar mass of metal = ?

I = average current = 3.86 A

t = time period in seconds = 16.2 min = 972 s            (Conversion factor: 1 min = 60 sec)

n = number of electrons exchanged = 3mol^{-1}

F = Faraday's constant = 96500 C

Putting values in equation 1, we get:

1.25g=\frac{M\times 3.86A\times 972s}{3mol^{-1}\times 96500 C}\\\\M=\frac{1.25g\times 3mol^{-1}\times 96500 C}{3.86A\times 972s}\\\\M=96.45g/mol

Hence, the molar mass of the metal is 96.45 g/mol

7 0
3 years ago
Iron(II) is available to bond with chloride ion. How many of each type of ion will bond to form an ionic compound?
Evgesh-ka [11]

Answer:

D) 1 iron(II), 2 chloride

Explanation:

Iron II chloride is the compound; FeCl2. It is formed as follows, ionically;

Fe^2+(aq) + 2Cl^-(aq) -----> FeCl2

The formation of one mole of FeCl2 involves the reaction one mole of iron and two moles of chloride ions. This means that in FeCl2, the ratio of iron to chlorine is 1:2 as seen above.

Therefore there is one iron II ion and two chloride ions in each mole of iron II chloride, hence the answer.

7 0
3 years ago
What is the mass of phosphorus that contains twice the number of atoms found in 14
yulyashka [42]

Answer:

15.5 gm

Explanation:

What is the mass of phosphorus that contains twice the number of atoms found in 14 g of iron?

[Relative atomic mass : P = 31; Fe = 56]

14 gm Fe = 14gm/ 56 gm/mole = 14 mole gm/56gm = 14/56 mole

0.25 moles

2 X 0.25 = 0.5 moles

1 mole P = 31 gm

so

0.5 moles P =31/2 =15.5 gm

3 0
3 years ago
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