You can view more details on each measurement unit: molecular weight of KMnO4 or mol This compound is also known as Potassium Permanganate. The SI base unit for amount of substance is the mole. 1 grams KMnO4 is equal to 0.0063277542979072 mole.
We can use the dilution equation to find the volume of nitric acid needed to prepare a dilute solution
c1v1 = c2v2
c1 is concentration of concentrated solution and v1 is volume of concentrated solution
c2 is concentration of diluted solution and v2 is volume of diluted solution to prepared
substituting the equations
9.00 M x V = 1.25 M x 6.50 L
V = 0.903 L
903 mL of concentrated solution is required
Answer:
The part of the experiment that is set to compare data
Explanation:
The controlled variable is what stays constant throughout an experiment. You use the controlled variable to compare the new data to see what happened during whatever reaction you could say.
When the engine's <em>operating speed increases</em> the temperature of the engine will also increase.
Given:
Automobile engines without a cooling system.
To find:
The affect on the temperature of the engine as its operating speed increases.
Solution:
The speed of the operating engine increases.
- As we know that kinetic energy of the object and motion of the object is directly proportional<em> </em>to each other.
<em>Velocity </em><em>of object </em><em>∝ Kinetic energy </em><em>of object...[i]</em>
- When the<em> kinetic energy</em> of the object increases the kinetic energy of the particles of the object also increases.
- And <em>kinetic energy</em> of the particles is directly linked to the <em>temperature </em>of the object.
<em>Kinetic energy</em><em> ∝ </em><em>Temperature </em><em>of object</em>...[ii]
From [i] and [ii] :
<em>Velocity </em><em>of object ∝ </em><em>Temperature </em><em>of an object</em>
- When the engine's operating speed increases it will increase the kinetic energy of its particles and with that increase, the increase in the temperature of the engine will be <em>observed</em>.
So, from this, we can conclude when the engine's operating speed increases the temperature of the engine will also increase.
Learn more about kinetic energy and temperature here:
brainly.com/question/2731193?referrer=searchResults
(a) The mass of hydrogen sulfide produced in the reaction is 9.44 g.
(b) Water is the limiting reagent in the given reaction.
<h3>
Mass of hydrogen sulfide produced</h3>
Al2S3 + 6H2O ---> 2Al(OH)3 + 3H2S
mass of water in the reaction = 6(18 g/mol) = 108 g/mol
mass of hydrogen sulfide in the reaction: = 3(34) = 102 g/mol
108 g/mol of H2O ------- > 102 g/mol of H2S
10 of H2O -----------> ?
= 9.44 g
Aluminum sulfide will be completely consumed by the reaction while some fraction of water will remain. Thus, water is the limiting reagent in the given reaction.
Learn more about limiting reagents here: brainly.com/question/26905271
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