Answer:
a.
b.
c.
Explanation:
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In this case, since the reaction between sodium hydroxide and iron (III) sulfate yields iron (III) hydroxide, an insoluble base, and sodium sulfate, a soluble salt, we can write the molecular equation as shown below:
a.
Now, for the total ionic equation, we make sure we separate the aqueous species in ions (dissociation) in order to write:
b.
Finally, the net ionic equation comes up by cancelling out the spectator ions, those at both reactants and products sides:
Or just:
c.
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Answer: circle graph.
Justification:
A circle graph (also known as pie chart) is excellent to visualize the relative size of different sectors. Being the entire circle 100%, each sector will show the percent of each category.
In the given example, the circle will be divided in 3 different sectors, in which the size is proportional to the percent of each one.
In the given case::
<span>pH less than 8: 20%
</span><span>
</span><span> pH between 8 and 8.5: 50%,
</span><span>
</span><span>pH greater than 8.5: 30%
</span><span>
</span><span>
</span><span>So, a sector whose area is 20% will represent the first category, a sector whose area is 50% will represent the second category, and a sector whose area is 30% will represent the third category. The whole circle is 100%, this is the sum of the 3 categories is 100%.
</span>
Every element is made up of the same type of atom eg.hyrdogen is made of hyroden atoms
Answer:
The molar volume of a gas expresses the volume occupied by 1 mole of that respective gas under <em>certain temperature and pressure conditions</em>.
scientists use molar volume to measure gas because it it tells us about volume occupied by gas.
<u><em>Molar volume</em></u>
- The molar volume of a gas tell us about volume occupied by 1 mole of that respective gas under certain temperature and pressure conditions.
- At STP(Standard Temperature and Pressure) condition which is equal to 22.4 L for 1 mole of any ideal gas at a temperature equal to 273.15 K and a pressure equal to 1.00 atm.
- The molar volume of a gas is derived from the ideal gas law <u><em>PV=NRT</em></u>