Answer:
0.0697 M
Explanation:
From the balanced equation:
1 mole of FeI2 requires 2 moles of AgNO3
mole of AgNO3 = molarity x volume
= 0.064 x 0.350 = 0.0244 mole
Mole of FeI2 required = 0.0244 x 1/2
= 0.0112 mole
Mole of FeI2 present = mass/molar mass
= 1.97/309.65
= 0.006362
Hence, FeI2 is the limiting reagent.
2 moles of AgNO3 is gives 1 mole of Fe(NO3)2
0.0244 mole of AgNO3 gives = 0.0233 x 1/2 = 0.0112 mole of Fe(NO3)2
There are 2 moles of Iron (II) cation for every 1 mole of Fe(NO3)2
mole of iron (II) cation in 0.0112 mole Fe(NO3)2:
= 2 x 0.0112 = 0.0244 mole
Molarity of iron (II) cation = mole/volume
= 0.0244/0.350 = 0.06971
To 3 significant figure = 0.0697 M
0.357mol Au * (196.96g/1 mol)= 70.1g
You must use dimensional analysis to solve this problem by using the molar mass of Au (gold) to find out how much mass would be in only .357mol Au
Answer:
Periods :)
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Explanation:
उत्तर : गुरुत्वाकर्षण का सार्वत्रिक नियम :
इस विश्व का प्रत्येक पिंड दूसरे पिंड को एक बल से अपनी ओर आकर्षित करता है जो दोनों पिंडों के द्रव्यमानों के गुणनफल के समानुपाती होता है तथा उनके बीच की दूरी के वर्ग के व्युत्क्रमानुपाती होता
Used mainly in the context of Geography a Constructive force is involved in making new land while a Destructive force breaks the land. As they are carrying opposite functions to one another they are considered as competing forces.