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4 years ago

How would a Bohr model of a neon atom differ from the model of nitrogen.

1 answer:

5 0

"According to the Bohr model an atom has a nucleus with electrons in circular orbit around the nucleus. For a bohr model of Nitrogen there will be 2 orbitals with the first one having 2 electrons and the last orbital having 5. Whereas for the Bohr model of Neon there will be 3 orbitals the first one having 2, the second one having 8 and the last one having 7 electrons."

This answer was by TheMysteriousGamer11, I couldn't have thought of a better way to explain.

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Jayden wants to model the hydrological cycle. He puts some water in a small plastic cup, draws a line on the cup at the water le

kupik [55]

Evaporation...evaporation occurs when it is warmer and the particles get further apart so they kinda drift off and go their own way(they turn into a gas) then the water in the cup has a less amount so that is why the water is below the line

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3 years ago

The count in a bacteria culture was 100 after 20 minutes and 2000 after 40 minutes. Assuming the count grows exponentially, What

Afina-wow [57]

Answer:

Explanation:

Let X be the number of bacteria at time t, and Xo be the initial number of bacteria

Bacteria grows exponentially, the exponential growth model is thus:

X = Xo $e^{kt}$

[e is the exponential sign]

k is the growth constant = growth rate

At t = 20 minutes, X = 100

At t = 40 minutes, X = 2000

Substituting that into the formula

(i) ... 100 = Xo $e^{k20}$

(ii) ... 2000 = Xo $e^{k40}$

Divide (ii) by (i)

$\frac{2000}{100} = \frac{Xoe^{40k} } {Xoe^{20k}}$

20 = $e^{40k-20k} = e^{20k}$

[Xo cancels Xo. Division of values raised to a power is done by subtracting their powers]

Take the natural log of both sides

㏑20 = 20k

[taking the ㏑ cancels the exponential]

k = $\frac{ln20}{20}$

We can now substitute k to solve one of the equations

substituting k in (ii): 2000 = Xo $e\frac{ln 20}{20}.^{40}$

2000 = Xo $e^{0.15*40}$

2000 = Xo $e^{6}$

Making Xo the subject of the formula

Xo = $\frac{2000}{e^{6} }$

Xo is approximately 5 cells.

THE DOUBLING TIME

The doubling time is the time it takes for the population to double, so 5 cells become 10 cells

Since Xo = 5

Given that X = Xo $e^{kt}$

When X=10,

10 = 5 $e^{0.15t}$

solving for t:

$e^{0.15t} = \frac{10}{5}$

Take ln of both sides

0.15t = ln 2

t = $\frac{ln2}{0.15}$

t =4.62 minutes

POPULATION AFTER 65 MINUTES

X = 5 $e^{0.15*65}$

X = 85770

WHEN WILL THE POPULATION REACH 12000

12000 = 5 $e^{0.15t}$

$e^{0.15t}$ =240

take ln of both sides

0.15t = ln 2400

t = 51.89 minutes (approximately 52 minutes)

6 0

3 years ago

Explain why the change in color of the peppered moths in response to the

GarryVolchara [31]

Answer:

The Trees changed color due to the pollution caused by the industries,it was not natural.When the white moths started standing out of the dark color of the trees they were eaten while the darker moths were saved and eventually all the white moths went extinct and the darker moths made more of their own kind

Explanation:

4 0

3 years ago

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Select the correct text in the passage.

masya89 [10]

Answer:

the actual REAL answer would be, Parthenogenesis involves the formation of a zygote.

Explanation: Formation of a zygote is the step in both, sexual and asexual reproduction. Both modes of reproduction tend to continue the lineage of life forms and to pass on genetic material on their offspring.

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4 years ago

Read 2 more answers

PLZ HELP!!!

Galina-37 [17]

Answer:

sorry I don't know the answer but I love your profile picture. squid game is such a good show :) <3

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3 years ago