Moles of helium is required to blow up a balloon to 87.1 liters at 74 C and 3.5 atm is 021.65 mole
Mole is the unit of amount of substances of specified elementary entities
According to the ideal gas law he number of moles of a gas n can be calculated knowing the partial pressure of a gas p in a container with a volume V at an absolute temperature T from the equation
n =pV/RT
Here given data is volume = 87.1 liters
Temperature = 74 °C means 347.15 k
Pressure = 3.5 atm
R = 0.0821
Putting this value in ideal gas equation then
n =pV/RT
n = 3.5 atm×87.1 liters / 0.0821 ×347.15 k
n = 021.65 mole
Moles of helium is required to blow up a balloon to 87.1 liters at 74 C and 3.5 atm is 021.65 mole
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Answer:
False
Explanation:
Electric fields are invisible to the human eye, it is similar to magnetism and radio waves.
Answer:
Explanation:
Equilibrium system: It is defined as that condition when the rate of forward reaction is equal to rate of backward reaction.
It is also defined as that condition concentration of reactantsx and concentrations of products are constant .
Suppose a reaction
Equilibrium constant,
Equilibrium constant,
When the reaction is not in equilibrium then reaction constant
When the reaction is in equilibrium then the equilibrium constant is equal to reaction constant
Hence,
When Q < K then the concentrations of reactants are greater than the concentrations of products.
When Q > K then the concentrations of products are greater than the concentration of reactants.
Answer :
Answer:
The change in color.
Explanation:
The apple turn brown in color because of the oxidation process. When the oxygen and water molecules in air react with it, oxidation take place. The oxidation process is very efficient in ambient temperature.
For example, if the peal off apple is placed into the refrigerator it take a time to got oxidize and turn brown, but if it is placed in room temperature it quickly turn brown.
when oxygen is react with peel off apple , it trigger the polyphenol oxidase enzyme to oxidize the phenolic compound and quinones are formed which then react with amino acids and produced brown color.
Answer:
4 neutrons
Explanation:
A lithium atom contains 3 protons, 4 neutrons and 3 electrons
