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ch4aika [34]
3 years ago
5

In which of the following are the symbol and name for the ion given correctly?

Chemistry
1 answer:
Andrej [43]3 years ago
7 0
Fe2+:ferrous  ion;  fe3+ ferric  ion  are the  one  which  are  correctly  named(Answer  A)  Sn2+  are  called  stannous  ion   while Sn4+  are  known  as stannic  ions. Pb2+  are  called  lead  (II)  ions   while  Pb4+  are  known  as lead  (IV) ion Co2+  are known was  cobalt  (II)  ions  while  Co3+  are  known  as cobalt(IIi)  ion.
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Ted used a balance scale to weigh a 2.233 g sample of copper sulfate. Which of these measurements made by Ted is the most accura
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How will you describe the behavior of dry ice?​
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Explanation: A square of dry ice has a surface temperature of - 109.3 degrees Fahrenheit (- 78.5 degrees C). Dry ice additionally has the extremely decent component of sublimation - as it separates, it transforms legitimately into carbon dioxide gas as opposed to a fluid.

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What two quantities must be known to calculate the density of a sample of matter? A) mass and volume B) length and mass C) size
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A

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3 years ago
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Describe the difference between an independent and dependent valuable?
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A dependent valuable is a valuable whose variation depend on another variable usually the independent variable. An independent variable is a variable whose variation do not depend on another variable but the reseacher experimenting.

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3 years ago
How many liters of O2 at 298 K and 1.00 bar are produced in 1.50 hr in an electrolytic cell operating at a current of 0.0200 A?
stellarik [79]

Answer: 0.0069L

Explanation:

2H2O(l) ---->O2(g) + 4H+(aq) + 4e-

no of moles= it/eF

NO of moles of O2 produced = (Current in Ampere x Time in second)/ (Faraday constant x Number of electrons required)

Moles of O2 produced = (0.02x (60 x 60X1.5 s)/(96485 x 4)

= 0.0002798 moles= 2.798x 10 ^-4moles

Using  ideal gas equation,

P V = n R T

Where, P is the pressure,

V is the volume,

n is the number of moles,

R is the gas constant, and T is the temperature

We have, 1 bar = 0.986923 atm

Substituting the values,

V = nRT/P = (2.798 x 10-4moles x 0.08205 L atm mol K x 298 K)/ 0.986923 atm = 0.0069L

Volume of O2 produced = 0.0069L

7 0
3 years ago
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