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Airida [17]
3 years ago
5

What is the molar mass of Fe(NO3)3

Chemistry
1 answer:
makkiz [27]3 years ago
4 0
The molar mass is 242 g/mol (<span>241.8597 g/mol). There is a very good online service to calculate molar masses:
http://www.webqc.org/mmcalc.php

</span>
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13. a. Why are the units used to express the densi-
LenaWriter [7]

Answer with Explanation:

The units used to express the densities of gases are different from those of solids and liquids because the particles in gas are widely separated from each other, unlike the particles in solid and liquid <u><em>which are almost the same</em></u>. The particles in solid are very close together. Considering it melts (if it's an ice), it will turn into a liquid and the change in volume is slightly greater only. However, if the liquid evaporates and transitions into a gas, <u>the volume becomes largely different from its solid and liquid state</u>. This is because the particles are much farther apart and free to move.

7 0
2 years ago
In an experiment, 0.35 mol of co and 0.40 mol of h2o were placed in a 1.00-l reaction vessel. at equilibrium, there were 0.22 mo
Natalija [7]
We need to set up an I.C.E chart as follows:

       CO                 H20                CO2             H2 
<span>I      0.35               0.40                  0                  0 </span>
<span>C   .35-x               0.40-x               x                   x </span>
<span>E     0.19              0.40-x               x                   x 
</span>
We have 0.35 mol of CO at the start and 0.19 remaining. This means that x=0.35-0.19 >> 0.16 
<span>Now substitute in 0.16 in your Ke equation. </span>
<span>Just in case you're having trouble with that: </span>
<span>Kb= [Products]/[Reactants] = ([CO][H2O])/([CO2][H2]) 
</span>
Therefore, the constant of equilibrium would be equal to 0.56.
8 0
3 years ago
Read 2 more answers
Which ones are chemical change help please its a timed test!
leva [86]
I think “A” is the right answer
7 0
3 years ago
Read 2 more answers
An unknown solid is entirely soluble in water. On addition of dilute HCl, a precipitate forms. After the precipitate is filtered
Karo-lina-s [1.5K]

Answer:

Pb(NO3)2

Cd(NO3)2

Na2SO4

Explanation:

In the first part, addition of HCl leads to the formation of PbCl2 which is poorly soluble in water. This is the first precipitate that is filtered off.

When the pH is adjusted to 1 and H2S is bubbled in, CdS is formed. This is the second precipitate that is filtered off.

After this precipitate has been filtered off and the pH is adjusted to 8, addition of H2S and (NH4)2HPO4 does not lead to the formation of any other precipitate.

The yellow flame colour indicates the presence of Na^+ which must come from the presence of Na2SO4.

5 0
2 years ago
The freezing point and the boiling point of water can be altered by a variety of techniques. Which of the following has little o
yan [13]

Answer:

D: Increasing the amount of water.

Explanation:

Choice A: ­ increasing the pressure can force the liquid to stay a liquid  and affect the boiling point (decrease it).

Choice B and C: ­ both involve colligative properties, adding a solute to water will  increase the boiling point  of water.

Choice D: ­ just having more water does not change the boiling point of the water as this minimize the effect of any external factor.

<em>So, the right choice is: D: Increasing the amount of water.</em>

6 0
2 years ago
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