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Delvig [45]
2 years ago
9

Water temperature

Chemistry
1 answer:
Dovator [93]2 years ago
8 0
As you go down deeper, less water is able to receive the heat from the sun or other sources, so naturally they would be cooler than the water at the top
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What is the answers and pls show work if possible!!
taurus [48]

D = m / V


It even gives you the density of gold in the problem. Major hint. Once you know the volume (using V = m / D) then you can calculate the height (thickness) from the equation...


V = L x W x H

Volume = Length x Width x Height


start by converting 200.0 mg into grams

1000 mg = 1 g

200. mg x (1 g / 10^3 mg) = 0.200 g


V = m / D

V = 0.200 g / (19.32 g/cm^3)

V = 0.01035 cm^3


Convert 2.4 ft and 1 ft to cm

2.4 ft x (12 in / 1 ft) x (2.54 cm / 1 in) = 73.15 cm

1 ft = 30.48 cm


Compute the height (thickness)

V = LxWxH

H = V / LW = 0.01035 cm^3 / 73.15 cm / 30.48 cm

H = 4.64 x 10^-6 cm


Convert to nanometers

4.64 x 10^-6 cm x (1 m / 100 cm) x (10^9 nm / 1 m) = 46.4 nm


Knowing the atomic radius of gold, I might have asked my students for the minimum number of gold atoms in this thickness of gold. This would assume that the gold atoms are all in a row. This would give the minimum number of gold atoms.


Atomic radius gold = 174 pm

Diameter = 348 pm


46.4 nm x (1 m / 10^9 nm) x (10^12 pm / 1 m) x (1 Au atom / 248 pm) = 133 atoms of gold


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3 years ago
A volume of 10.0L of gas at a temperature of 5c is cooled to a temperature of 85C at constant pressure what is the new volume of
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I don't know how 5°C cooled to 85°C but the answer would be 12.878L

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Answer:

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Explanation:

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The conductance of the electric current through the electrolytic solution increases with
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The conductance of the electric current through the electrolytic solution increases with increase in concentration.

<h3>What is electrolysis?</h3>

The term electrolysis has to do with a situation in which liquids conduct electricity by the movement of ions.

The conductivity of the solution depends on the ions present in the solution. Thus, the conductance of the electric current through the electrolytic solution increases with increase in concentration.

Learn more about electrolysis:brainly.com/question/12054569

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A reaction in which a single compound is broken down into two or more elements or new compounds
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Decomposition → ab = a +b 
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