allisonatalie9169
28.01.2020 •
Chemistry
What type of bond is formed during dehydration synthesis?
Solved
Show answers
More tips
- C Computers and Internet Log-in: what is it and why do you need it?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
- F Food and Cooking 10 Reasons Why You Should Avoid Giving Re-Gifts: An Informative Guide...
- S Sport How to wrap boxing hand wraps? Everything you need to know!...
- A Animals and plants 5 Tips for Taking Care of Yews to Keep Them Green and Beautiful...
- H Health and Medicine How to Calm Your Nerves? Expert Tips That Actually Work...
- O Other What is a Disk Emulsifier and How Does it Work?...
- S Sport How to Pump Your Chest Muscle? Secrets of Training...
- C Computers and Internet How to Get Rid of 3pic Infector: Everything You Need to Know...
- S Style and Beauty How to Grow Hair Faster: Real Methods and Advice...
Answers on questions: Chemistry
- C Chemistry 12. what volume of carbon dioxide contains the same number of molecules as 20.0 ml of oxygen at the same conditions?...
- C Chemistry How much of an energy change would it take to turn a 50.0 g sample of ethanol from a gas to a solid assuming no temperature change during the process?...
- C Chemistry How to find resistance of a color code with 4 rings?...
- C Chemistry Which of the selections completes the following nuclear reaction?...
- C Chemistry A compound with the molecular formula C8H8O produces an IR spectrum with signals at 3063, 1686, and 1646 cm-1. The 1H NMR spectrum of this compound exhibits a singlet at 2.6 ppm...
- C Chemistry Which of the following statements is true for a pine cone falling with acceleration less then g? A: It is converting potential and kinetic energy into heat. B: It is converting...
- C Chemistry What are the six scientific method in order? conclusion, observation, experiment, problem, hypothesis, results.....
- C Chemistry What will happen to the temperature of a substance if the kinetic energy of the molecules decreases?...
- P Physics Consider the capacitor network 189 V 17 µF 17 µF 17 µF 17 µF 13 µ F 17 µ F 17 µ F y z What is the charge on the 13 µF capacitor centered on the left directly between points y...
- B Business Following are two income statements for Alexis Co. for the year ended December 31. The left number column is prepared before any adjusting entries are recorded, and the right...
Ответ:
peptide bonds between amino acids #platofam
Ответ:
A. 650 moles of sulphur.
B. 30 g of FeS₂
Explanation:
The balanced equation for the reaction is given below:
Fe + 2S —> FeS₂
From the balanced equation above,
1 mole of Fe reacted with 2 moles of S to produce 1 mole of FeS₂.
A. Determination of the mole of sulphur needed for the reaction.
From the balanced equation above,
2 moles of S reacted to produce 1 mole of FeS₂.
Therefore, Xmol of S will react to produce 325 moles of FeS₂ i.e
Xmol of S = 2 × 325
Xmol of S = 650 moles
Thus, 650 moles of sulphur are needed for the reaction.
B. Determination of the mass of FeS₂ produced by the reaction of 0.5 mole of sulphur.
From the balanced equation above,
2 moles of S reacted to produce 1 mole of FeS₂.
Therefore, 0.5 mole of S will react to produce = (0.5 × 1)/2 = 0.25 mole of FeS₂.
Finally, we shall determine the mass of 0.25 mole of FeS₂. This can be obtained as follow:
Mole of FeS₂ = 0.25 mole
Molar mass of FeS₂ = 56 + (32×2)
= 56 + 64
= 120 g/mol
Mass of FeS₂ =?
Mass = mole × molar mass
Mass of FeS₂ = 0.25 × 120
Mass of FeS₂ = 30 g
Thus, 30 g of FeS₂ were obtained from the reaction.