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Anna35 [415]
2 years ago
15

What is the amount of mass per unit volume of a material

Chemistry
2 answers:
Ymorist [56]2 years ago
8 0
Mass/volume I think so
marshall27 [118]2 years ago
3 0
Mass per unit volume is nothing but density of an body density = Mass/Volume. hope this helps. :)
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How many moles of nitrogen gas will occupy a volume of .5L at 1.0atm and 298K
hammer [34]
 <span>Use the Ideal law Equation :

P.V= n.R.T 

V = 0.5 L

P = 1.0 atm

</span><span>R= 0.0821 L*atm/mol*K 
</span>
<span>n = R*T/P*V 

</span><span>P*V= n*R*T 
</span>
1.0 * 0.5 = n *<span>0.0821*298

0,5 = n* 24.4658

n = 0,5 / 24.4658

n =0.0204 moles


</span>
8 0
3 years ago
Which equation is balanced?
Paha777 [63]

Answer:

it's the third one

Explanation:

in the first one oxygen molecules aren't balanced

the second ok me oxygen isnt balanced

and the fourth one hydrogen isn't balanced

hope it helps ;)

5 0
3 years ago
Read 2 more answers
What is the anion in the chemical formula MnSe2?
qwelly [4]
Magnesium(IV)dioxide
Hope this helped
8 0
3 years ago
When cac2 reacts with water, what carbon-containing compound forms? when reacts with water, what carbon-containing compound form
meriva
Notice that each reactant is made up of two elements. To predict the products, all you have to do is interchange the combination of the two reactants while taking note that metal comes first, followed by nonmetals. With that being said, the reaction would be:

CaC₂ + 2 H₂O --> C₂H₂ + Ca(OH)₂ 

<em>So, the answer is C₂H₂.</em>
3 0
2 years ago
If u mix 10ml of 70%ethanol with 20ml of 80% ethanol with 50ml water what is the concentration of the resulted solution
morpeh [17]

Answer:

29% is the final concentration

Explanation:

To solve this question we must find the volume of ethanol added and the volume of the whole solution. The concentration will be:

Volume ethanol / Total volume * 100

<em>Volume ethanol:</em>

10mL * 70% = 7mL ethanol

+

20mL * 80% = 16mL ethanol

= 23mL ethanol

<em>Total volume:</em>

10mL + 20mL + 50mL = 80mL

<em>Concentration:</em>

23mL / 80mL * 100

= 29% is the final concentration

6 0
2 years ago
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