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lys-0071 [83]
4 years ago
8

when you use the terms heavier or lighter to compare different objects with the same volume, what property of the objects are yo

u usually comparing?
Chemistry
1 answer:
vfiekz [6]4 years ago
4 0
When two object occupy the same space or have the same volume, but one of them is heavier than the other. This means that the heavier object is having a higher mass which results in a higher density than the other (lighter) object.

Note that density is calculated using the following rule:
density = mass / volume
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If 20.0g of water at 56.2℃ absorbs 195 J of heat, what is the final temperature? *
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Answer

Explanation:

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In the following reaction, how many grams of oxygen will react with 10.47 grams of benzene (C6H6)? 2C6H6 + 1502 12CO2 + 6H2O The
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Compare and contrast alpha beta and gamma radiation
Evgen [1.6K]
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Penetrative power 
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Hope this helps:)


8 0
3 years ago
What is The pH and pOH of a 1.00x10-3M solution of CH3COOH (Ka=1.75x10-5) ?
zaharov [31]

Answer:

<h2>pH = 3.9</h2><h2>pOH = 10.1</h2>

Explanation:

Since CH _ 3COOH is a weak acid to find the pH of CH _ 3COOH we use the formula

pH =  -  \frac{1}{2}   log(Ka)  -  \frac{1}{2}  log(c)

where

Ka is the acid dissociation constant

c is the concentration

From the question

Ka of CH _ 3COOH = 1.75 × 10^-5

c = 1.00 × 10-³M

Substitute the values into the above formula and solve for the pH

That's

pH =  \frac{1}{2} ( -  log(1.75 \times {10 }^{ - 5} -  log(1.00 \times  {10}^{ - 3} )  )  \\   =  \frac{1}{2} (4.757  + 3) \\  =  \frac{1}{2}  \times 7.757) \\  = 3.8785 \:  \:  \:  \:  \:  \:  \:  \:

We have the answer as

<h3>pH = 3.9</h3>

To find the pOH we use the formula

pH + pOH = 14

pOH = 14 - pH

pOH = 14 - 3.9

We have the answer as

<h3>pOH = 10.1</h3>

Hope this helps you

4 0
3 years ago
In the dilution process of a solution, the moles of ___________ does not change.
nevsk [136]
Moles of solute does not change.
8 0
3 years ago
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