According to the following reaction, how many moles of carbon monoxide will be formed upon the complete reaction of 23.1 grams of benzene (C6H6) with excess oxygen gas?benzene (C6H6) (l) + oxygen (g) carbon monoxide (g) + water (g)
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C6H6 + 9/2O2 = 6CO + 3H2O
We are given the amount of benzene to be used for the reaction. This will be the starting point for the calculations.
23.1 g C6H6 ( 1 mol C6H6 / 78.12 g C6H6 ) ( 6 mol CO / 1 mol C6H6 ) = 1.77 mol CO is produced from the reaction
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Beth has a one-day-old baby daughter. When Beth puts her finger in the baby’s hand, the baby grasps her finger. Which statement best describes why the baby grasps Beth’s finger?A.) The baby’s reflex to grab is an innate behavior.B.) The baby’s visual memory recognizes Beth’s finger.C.) The baby is a day old and has learned to reach for Beth.D.) The baby’s homeostatic response is to touch objects that are warm
Determine the new pressure of o2(g) in the cylinder in atmospheres
Which substance has the lowest [H+] concentration but is still considered an acid?
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Answer:
(A) - Milk
Explanation:
Acids cannot go below the 7 mark, and milk is the last one right before 7
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According to the mole concept, there are 1.8074 moles in 77.1 g of chlorine.
What is a mole?
Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Number of moles is calculated as, mass/molar mass
Substituting values in formula gives, number of moles=77.1/70.90=1.8074
Thus, there are 1.8074 moles in 77.1 g of Cl₂.
Learn more about mole,here:
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1.) is electromagnetic energy
2.) is an electron
3.) has zero charge
4.) is emitted from the nucleus
5.) has a +2 charge
6.)has a -1 charge
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Answer: 2, 4, 6
Explanation: A beta particle is a high energy electron, emitted from the radioactive disintegration of an atomic nucleus. It has a -1 charge.
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then b is 4
2a=3b since a=6
2x6=3b
12=3b
b=12/3
b=4
Answer:
b=4
Explanation:
2a=3b
2a=2*6
2*6=12
2a=12
12=3b
12/3=4
b=4
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the number of moles of CaCl₂ present - 12 mol
Volume of solution - 3 L
Therefore if 3 L contains 12 mol of CaCl₂
then 1 L of CaCl₂ contains -
Therefore molarity of CaCl₂ is 4 M