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skelet666 [1.2K]
3 years ago
15

Is there are 10.0 g of sucrose and 8.0 g of oxygen, how many moles of sucrose are available for this reaction

Chemistry
2 answers:
liq [111]3 years ago
8 0
If there is a multiple choice then the answer would be 0.029. I hope this helps you
katrin2010 [14]3 years ago
7 0

Answer:

There are 0.0292 moles of sucrose available for this reaction

Explanation:

Number of moles of a compound = \frac{mass of compound}{molar mass of the compound}

Here mass of sucrose is 10.0 g. Molar mass of sucrose is 342.3 g/mol

So moles of sucrose available for this reaction = \frac{10 g}{342.3 g/mol}= 0.0292 moles

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Battery acid has a density of 1.285 g/mL and contains 38.0% sulfuric acid by mass. The car battery contains 1.45 L of battery ac
larisa86 [58]

Answer: 708.2 grams

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

Given : 38 g of H_2SO_4 is dissolved in 100 g of solution.

Density of solution = 1.285 g/ml

Volume of solution = \frac{mass}{density}=\frac{100g}{1.285g/ml}=77.8ml

Thus if 77.8 ml of H_2SO_4 contains = 38 g of H_2SO_4

1.45L= 1450 ml of H_2SO_4 contains = \frac{38}{77.8}\times 1450=708.2 g of H_2SO_4

Therefore, the mass of the sulfuric acid in a car battery is 708.2 g

5 0
3 years ago
How do I study Chemistry efficiently?
TEA [102]
Review and Study Material Before Going to
Class.

Seek Understanding.

Take Good Notes.

Practice Daily.

Take Advantage of Lab Time.

Use Flashcards.

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5 0
3 years ago
The equilibrium constant (K p) for the interconversion of PCl 5 and PCl 3 is 0.0121:
aksik [14]

Answer: At equilibrium, the partial pressure of PCl_{3} is 0.0330 atm.

Explanation:

The partial pressure of PCl_{3} is equal to the partial pressure of Cl_{2}. Hence, let us assume that x quantity of PCl_{5} is decomposed and gives x quantity of PCl_{3} and x quantity of Cl_{2}.

Therefore, at equilibrium the species along with their partial pressures are as follows.

                         PCl_{5}(g) \rightarrow PCl_{3}(g) + Cl_{2}(g)\\

At equilibrium:  0.123-x          x              x

Now, expression for K_{p} of this reaction is as follows.

K_{p} = \frac{[PCl_{3}][Cl_{2}]}{[PCl_{5}]}\\0.0121 = \frac{x \times x}{(0.123 - x)}\\x = 0.0330

Thus, we can conclude that at equilibrium, the partial pressure of PCl_{3} is 0.0330 atm.

4 0
3 years ago
If an isotope of an element has 40 neutrons and a mass number of 79, how many electrons must it have?
34kurt

Answer: 39 electrons

Explanation: Subtract 79 by 40 to get the atomic number (amount of protons) which is 39. The number of electrons must be the same as the number of protons if it's not an ionic compound so the amount of electrons is the same amount of protons.

5 0
3 years ago
Answer from which metal these objects are made <br>*(¡¡¡) is more important ​
Gennadij [26K]

Answer:

(i) Electric Wires - Tin

(ii) Ornaments - Gold

(iii) Filament of bulb - Tungsten

(iv) Silvery Foil over sweets - Silver

(v) Foils to wrap food - aluminum

(vi) Pipes to supply water - Plastic or PVC pipes

5 0
3 years ago
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