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3 years ago

What type of energy transfer is responsible for making you feel cold when you are swimming in cool water? Explain your answer

1 answer:

6 0

The energy they are reffering to is heat . When you swim in cold water the heat of your body is transffered to the water becasue i guess it s because it wants to reach and enqilibrium within the systems.Nature in general doesn t like gradients.And also in water we loose more heat compared to air of the same temperature i guess this happens because water compared to air is a liquid it has (greater density, it s directly in contact with our body)

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What is the Molarity of a solution of HNO3 if it contains 12.6 moles in a 0.75 L solution? *

Korolek [52]

Answer:

M = 16.8 M

Explanation:

Data: HNO3

moles = 12.6 moles

solution volume = 0.75 L

Molarity is represented by the letter M and is defined as the amount of solute expressed in moles per liter of solution.

$M=\frac{moles}{solution volume}$

The data is replaced in the given equation:

$M=\frac{12.6 mol}{0.75L}=16.8\frac{mol}{L}$

7 0

3 years ago

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Vesnalui [34]

Question:

What's the article about?

8 0

3 years ago

Please help me i keep getting this wrong :(

solmaris [256]

A) A chandelier has been hanging in the kitchen for years
B) A log floats on top of the lake
C) You place your book on the top of a flat table

Those are the answers. In each case, there is always a force that balances the weight of the object and keeps them in a static equilibrium. Tension, Buoyancy and Normal force.

7 0

3 years ago

Brainliest to whoever gets it correct.

pochemuha

Answer:

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8 0

3 years ago

A graduated cylinder contains 18.0ml of water. what is the new water level after 35.6g of silver metal with a density of 10.5 g/

AlekseyPX

Answer:

The answer to your question is

1.- Volume = 3.4 ml

2.- Volume = 0.61 ml

3.- Mass = 2872.8 pounds

Explanation:

Problem 1

Volume = 18 ml

mass = 35.6 g

density = 10.5 g/ml

Process

1.- Calculate the volume of silver

Formula

$density = \frac{mass}{volume}$

solve for volume

$volume = \frac{mass}{density}$

Substitution

$volume = \frac{35.6}{10.5}$

volume = 3.4 ml

2.- Problem 2

Total volume = ?

Volume = 18 + 3.4

Volume = 21.4 ml

Data

mass = 8.3 g

density = 13.6 g(ml

volume = ?

Formula

$density = \frac{mass}{volume}$

Solve for volume

$volume = \frac{mass}{density}$

Substitution

$volume = \frac{8.3}{13.6}$

Result

volume = 0.61 ml

3.- Problem 3

Data

volume = 345 gal

density = 1 g/ml

mass = ?

Formula

$density = \frac{mass}{volume}$

Solve for mass

mass = density x volume

Covert gal to ml

1 gal --------------- 3785 ml

345 gal ------------- x

x = (345 x 3785) / 1

x = 1305825 ml

Substitution

mass = 1 x 1305825

mass = 1305825 g

Convert g to pounds

1 g ------------------- 0.0022 pounds

1305825 g ---------------- x

x = (1305825 x 0.0022)

x = 2872.8 pounds

5 0

3 years ago