Answer:
Explanation:
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In this case, according to the given information, it turns out possible to set up the initial version of the half-reaction as follows:
Now, we assign the oxidation numbers to both nitrogen atoms:
It means three electrons are carried, two water molecules are needed on the left side in order to balance the oxygen atoms and consequently four hydronium ions to balance hydrogen atoms in acidic media:
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Answer: 54. Xe. Xenon. Noble gas. [Kr] 4d10 5s2 5p6.
Explanation: Elements: Indium; Rubidium; Rhodium
In dilution problems involving known concentrations and volumes of the solution, a widely used equation is:
C1V1 = C2V2
Where:
C1 = Concentration of Solution 1
V1 = Volume of Solution 1
C2 = Concentration of Solution 2
V2 = Volume of Solution 2
Substituting the given values gives: (2.35 M)*(250mL) = (15.0 M)*V2
V2 = 39.17 mL
So, you must initially have 39.17 mL of 15 M solution and dilute it to 250 mL to achieve a 2.35 M solution
Answer:
if a 40.0-gram sample of the gas occupies 11.2 liters of space at STP? A balloon is filled with 5 moles of helium gas.
Explanation:
Answer : The maximum mass of aspartame is, 5142.3 grams
Explanation : Given,
Molal-freezing-point-depression constant for water =
Mass of water (solvent) = 2.50 kg
Molar mass of aspartame = 294.3 g/mole
Formula used :
where,
= change in freezing point
= freezing point of solution =
= freezing point of water =
i = Van't Hoff factor = 1 (for non-electrolyte)
= freezing point constant for water =
m = molality
Now put all the given values in this formula, we get
Therefore, the maximum mass of aspartame is, 5142.3 grams