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VikaD [51]
3 years ago
14

Calculate the molarity of 0.300 mol of Na2S in 1.75 L of solution.

Chemistry
1 answer:
Jobisdone [24]3 years ago
5 0
First equation:
molarity=
no.of moles of solute (Na2S)/volume of solution
0.300/1.75 = 0.171
second equation:
same law
but in volume it is milliliter so you have to convert it by multiplying it with 10^-3
(10 power -3)

to understand it clearly
see this
http://imgur.com/xTS35QM
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6 0
2 years ago
How many molecules of n2 are in a 200.0 ml container at 780 mmhg and 135∘c?
Neporo4naja [7]
By  use  of  ideal  gas  equation   PV=  nRT     where  n  is  the  number  of  moles,P =  pressure, V   =  volume,  R=  gas  constant  (0.08206 L. atm/ mol.k)     ant  T  is  the  temperature,  

to  calculate  the  number  of  moles(n) =PV/RT

convert  ml  to L,  that  is  200/1000= 0.2  L

convert  mmHg  to  atm,  that  is  780mm hg  x  1atm/  760  mm  hg=  1.026  atm

convert  temperature  to   kelvin,  that  is 135  +273=  408  k
n  is  therefore=  (0.2  x   1.026)/ ( 0.08206  x   408)=  6.129  x10^-3   moles

from  avogadro  constant    1moles  =  6.02  x10^23  molecules   what  about  6 .129  x10^-3  moles

= ( 6.02  x10^23)  x (6.129 x10^-3)/  1mole =  3.69  x10^21  molecules
8 0
3 years ago
What would form a solution
cluponka [151]
Search Results
Featured snippet from the web
A solution is made when one substance called the solute "dissolves" into another substance called the solvent. Dissolving is when the solute breaks up from a larger crystal of molecules into much smaller groups or individual molecules.
3 0
3 years ago
Which substance is always a product when an Arrhenius acid in an aqueous solution reacts with an Arrhenius base in an aqueous so
svetoff [14.1K]
The answer is (2). The question only ask the production of acid reacts with base. The acid has H+ ion and base has OH- ion. When they react, the production will always contain H2O.
3 0
3 years ago
Read 2 more answers
Three of the terms describe the compounds. a. Anomers have a different configuration only about the anomeric carbon atom.b. Dias
yKpoI14uk [10]

Answer:

The Three terms that describe the compounds are:

b. Diastereoisomers have different configurations at one or more (but not all) of the equivalent stereocenters and are not mirror images of each other.

c. Enantiomers are mirror images of each other, and so differ in configuration at all stereocenters.

d. Epimers are diastereomers that differ in configuration of only one stereogenic center.

Explanation:

Anomers are isomers of monosaccharides with more than 5 carbon atoms that have developed a hemiacetal bond, can take a cyclic structure and determine 2 different positions for the oxydryl ion.

6 0
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