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PilotLPTM [1.2K]
3 years ago
8

Which model is most likely used to show something that happens too slowly to see? 1.A model of a weather system 2.A model of mou

ntain formation 3.A model of the area of a circle 4.A model of an architectural building
Chemistry
1 answer:
Anastaziya [24]3 years ago
7 0

Answer:

model of mountain formation

Explanation:

The formation of mountains takes millions of years. This formation of mountains involves so much processes that do not occur quickly.

Hence, a model that can adequately show something that happens very slowly is the model for the formation of mountains.

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What is mass in g of 15.5 moles of calcium?
padilas [110]

Answer:

621.2090000000001 grams

Explanation:

1 moles Calcium to grams = 40.078 grams

15.5*40.078 = 621.2090000000001 g

4 0
3 years ago
What is the name of the energy needed to change the structure of matter
anyanavicka [17]

Answer:

Heat fusion

Explanation:

The energy required to change a solid to a liquid is called the heat of fusion.

4 0
2 years ago
RATE LAW QUESTION !
vivado [14]
In general, we have this rate law express.:

\mathrm{Rate} = k \cdot [A]^x [B]^y
we need to find x and y

ignore the given overall chemical reaction equation as we only preduct rate law from mechanism (not given to us).

then we go to compare two experiments in which only one concentration is changed

compare experiments 1 and 4 to find the effect of changing [B]
divide the larger [B] (experiment 4)  by the smaller [B] (experiment 1) and call it Δ[B]

Δ[B]= 0.3 / 0.1 = 3

now divide experiment 4 by experient 1 for the given reaction rates, calling it ΔRate:

ΔRate = 1.7 × 10⁻⁵ / 5.5 × 10⁻⁶ = 34/11 = 3.090909...

solve for y in the equation \Delta \mathrm{Rate} = \Delta [B]^y

3.09 = (3)^y \implies y \approx 1

To this point, \mathrm{Rate} = k \cdot [A]^x [B]^1

do the same to find x.
choose two experiments in which only the concentration of B is unchanged:

Dividing experiment 3 by experiment 2:
Δ[A] = 0.4 / 0.2 = 2
ΔRate = 8.8 × 10⁻⁵ / 2.2 × 10⁻⁵ = 4

solve for x for \Delta \mathrm{Rate} = \Delta [A]^x

4=  (2)^x \implies x = 2

the rate law is

Rate = k·[A]²[B]
6 0
2 years ago
The temperature of a substance can be described as:
inn [45]

Answer:

A

Explanation:

the average kinetic energy of all the atoms or molecules of that substance.

5 0
2 years ago
the coast of California on the western side of the state has a voice climate wild Eastern side of the desert.what could cause th
diamong [38]

fires could cause a big difference in the weather of California

7 0
3 years ago
Read 2 more answers
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