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Mila [183]
3 years ago
12

Maple has a sample of graphite, which is made up of carbon atoms. She has 1.810 x 1024 atoms of carbon. What is the mass of this

sample?
Chemistry
2 answers:
Lera25 [3.4K]3 years ago
4 0

Answer:

  about 36.10 g

Explanation:

The proportion of interest is ...

  mass/atoms = x/(1.810·10^24) = (12.0107 g)/(6.02214076·10^23)

Multiplying by 1.810·10^24, we find the mass of the sample to be ...

  x = 36.0991 g

The mass of the sample is about 36.10 grams (to 4 s.f.).

zysi [14]3 years ago
3 0

Answer:

<h2> <u>about</u><u> </u><u>3</u><u>6</u><u>.</u><u>1</u><u>0</u><u> </u><u>g</u></h2>

  • <em>the</em><em> </em><em>mass</em><em> </em><em>of</em><em> </em><em>the</em><em> </em><em>given</em><em> </em><em>maple</em><em> </em><em>which</em><em> </em><em>she</em><em> </em><em>has</em><em> </em><em>1</em><em>.</em><em>8</em><em>1</em><em>0</em><em>×</em><em>1</em><em>0</em><em>2</em><em>5</em><em> </em><em>atoms</em><em> </em><em>of</em><em> </em><em>carbon</em><em> </em><em>is</em><em> </em><em>equal</em><em> </em><em>of</em><em> </em><em><u>about</u></em><em><u> </u></em><em><u>3</u></em><em><u>6</u></em><em><u>.</u></em><em><u>1</u></em><em><u>0</u></em><em><u> </u></em><em><u>G</u></em><em><u>/</u></em><em><u>grams</u></em><em><u>.</u></em>
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No it is not

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Find the new pressure of 5 L of a gas at STP that is cooled to 250 K and expanded to 6L
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How many grams of aluminum chloride are produced when 5.96 grams of aluminum are reacted with excess chlorine gas? Start with a
Vadim26 [7]

Answer:

29.47 g of AlCl₃.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2Al + 3Cl₂ —> 2AlCl₃

Next, we shall determine the mass of Al that reacted and the mass of AlCl₃ produced from the balanced equation. This can be obtained as follow:

Molar mass of Al = 27 g/mol

Mass of Al from the balanced equation = 2 × 27 = 54 g

Molar mass of AlCl₃ = 27 + (35.5× 3)

= 27 + 106.5

= 133.5 g/mol

Mass of AlCl₃ from the balanced equation = 2 × 133.5 = 267 g

SUMMARY:

From the balanced equation above,

54 g of Al reacted to produce 267 g of AlCl₃.

Finally, we shall determine the mass of AlCl₃ produced by the reaction of 5.96 g of Al. This can be obtained as follow:

From the balanced equation above,

54 g of Al reacted to produce 267 g of AlCl₃.

Therefore, 5.96 g of Al will react to produce = (5.96 × 267)/54 = 29.47 g of AlCl₃.

Thus, 29.47 g of AlCl₃ were obtained from the reaction.

3 0
3 years ago
If 97.3 L of NO2 forms measured at 35 C and 632 mm Hg. What is the percent yield?
enyata [817]
<span>a. Use PV = nRT and solve for n = number of mols O2. 
mols NO = grams/molar mass = ? 

 Using the coefficients in the balanced equation, convert mols O2 to mols NO2. Do the same for mols NO to mols NO2. It is likely that the two values will not be the same which means one is wrong; the correct value in LR (limiting reagent) problems is ALWAYS the smaller value and the reagent producing that value is the LR. 

b. 
Using the smaller value for mols NO2 from part a, substitute for n in PV = nRT, use the conditions listed in part b, and solve for V in liters. This will give you the theoretical yield (YY)in liters. The actual yield at these same conditions (AY) is 84.8 L. 

</span>and % will be 60%.
3 0
3 years ago
how many formula units of CaCl2 are in 111 g CaCl2? the molar mass of calcium chloride is about 111 g/mol
d1i1m1o1n [39]

There are 6.02 × 10²³ formula units of CaCl2 in 111 g CaCl2. Details about formula units can be found below.

<h3>What is a formula unit?</h3>

Formula unit refers to the empirical formula of an ionic compound for use in stoichiometric calculations.

According to this question, there are 111g of CaCl2. The formula units can be calculated by multiplying the number of moles by Avogadro's number.

no of moles in CaCl2 = 111g ÷ 111g/mol = 1mol

Formula units of CaCl2 = 1mol × 6.02 × 10²³ = 6.02 × 10²³ formula units.

Therefore, there are 6.02 × 10²³ formula units of CaCl2 in 111 g CaCl2.

Learn more about formula units at: brainly.com/question/21494857

#SPJ1

5 0
2 years ago
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