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rewona [7]
3 years ago
12

What is the percent by mass of oxygen in table sugar?

Chemistry
1 answer:
BartSMP [9]3 years ago
7 0

51.41%

Percentage Composition from Formulas

A more complex example is sucrose (table sugar), which is 42.11% carbon, 6.48% hydrogen, and 51.41% oxygen by mass.

Or

53.3 %

Thus the % composition of glucose by mass is carbon 40.0 % oxygen 53.3 % hydrogen 6.7 % In this way, the % composition by mass of any compound can be calculated provided that its formula is known.

...

What is the percentage composition of sugar?

Element Symbol Mass Percent

Hydrogen H 6.714%

Carbon C 40.001%

Oxygen O 53.285%

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If there are 40 mol of NBr3 and 48 mol of NaOH, what is the excess reactant?
Nata [24]

Answer:

The correct answer is option B.

Explanation:

3NaOH+2NBr_3\rightarrow 3HOBr+3NaBr+N_2

Moles of NBr_3 = 40 mol

Moles of NaOH = 48 mol

According to reaction, 3 moles of NaOH reacts with 2 moles NBr_3

Then ,48 moles of NaOH will reacts with:

\frac{2}{3}\times 48 mol=32 mol of NBr_3

Then ,40 moles of NaBr_3 will reacts with:

\frac{3}{2}\times 40 mol=60 mol of NaOH

As we can see that 48 moles of sodium will completey react with 32 moles of nitrogen tribromide.

Moles left after reaction = 40 mol - 32 mol = 8 mol

Hence, the NBr_3 is an excessive reagent.

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3 years ago
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uranmaximum [27]

Answer: 63.88 atm

Explanation:

To answer this, we use the formula PV = nRT since the asumption is that the gas has an ideal behavior

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T = 251 ∘C = (251 + 273) K = 524 K, Volume = 1.75 L

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Answer:

Atom: The smallest particle of an element that has the properties of the element and can exist either alone or in combination.

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Explanation:

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