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never [62]
2 years ago
8

How many total atoms are present in 32. 8 grams of cu2s?.

SAT
2 answers:
BabaBlast [244]2 years ago
5 0

0.206 moles will contain 0.206 moles x 6.022 × 10^23 atoms which is equivalent to 1.240 x 10^23 atoms.

<h3>Total atoms in a compound</h3>

Given the following parameters

  • Mass of  Cu2s = 32.8 grams

Get the number of moles

  • Moles = Mass/Molar mass

Moles = 32.8/159.16 g/mol

Moles of Cu2S = 0.240moles

Since 1 molecule of atom  = 6.02 * 10^23 molecules

Hence 0.206 moles will contain 0.206 moles x 6.022 × 10^23 atoms which is equivalent to 1.240 x 10^23 atoms.

Learn more on molecules of compound here: brainly.com/question/473667

Inga [223]2 years ago
4 0

The number of atoms that are present in 32.8 grams of Cu2S is; 1.235 × 10²³ atoms

<h3>Number of atoms and Avogadro's number</h3>

The molar mass of Cu2S is; 64 +64 + 32

Hence, molar mass = 160.

Hence, the no. if moles in 32.8 grams of Cu2S is;

  • No. of moles, n = 32.8/160

  • n = 0.205.

Hence, the no. of atoms in the given sample is;

  • No. of atoms = n × Avogadro's number

  • No of atoms = 0.205 × 6.022 × 10²³

No. of atoms = 1.235 × 10²³ atoms

Read more on Avogadro's number;

brainly.com/question/1528951

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Which of the following are indicators of heatstroke quizlet
solmaris [256]

The option that are indicators of heatstroke are:

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<h3>What is Heat stoke?</h3>

This is known to be a kind of a life-threatening condition that is said to often occurs if a person ignore the warning signs of heat exhaustion or do when a person do not act quickly enough to get care.

Hence, The option that are indicators of heatstroke are:

  • high temperature above 104F.
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  • Throbbing headache.
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6 0
2 years ago
Of the 10,000 clocks from which the sample was chosen, about how many clocks are probably not defective?
tamaranim1 [39]

The number of clocks that are not defective is an illustration of proportions

Of the 10000 clocks, 9250 are probably not defective

<h3>How to determine the number of clocks that are not defective?</h3>

From the complete question, we have the following parameter:

15 out of 200 clocks are defective

The above means that the number of clocks that are not defective is:

Not defective = 200 - 15

Not defective = 185

Express as percentage

Not defective = 185/200

Not defective = 92.5%

In 10,000 the number of clocks that are not defective would be:

Not defective = 92.5% * 10000

Not defective = 9250

Hence, 9250 of the 10000 clocks are probably not defective

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7 0
2 years ago
A book has a mass of 400g the surface of the book in contact
Brut [27]

Answer:

The pressure exerted on the table due to the book is 200 N/m².

Explanation:

The pressure exerted on the table due to the book is 200 N/m².

The given parameters;

mass of the book, m = 400 g = 0.4 kg

dimension of the table,  = 0.10m x 0.20 m.

gravitational field strength g =  10 N/kg.

The area of the table is calculated as follows;

A = 0.1 x 0.2 = 0.02 m²

The pressure exerted on the table due to the book is calculated as follows; where;

F is the force of the book due to its weight

Thus, the pressure exerted on the table due to the book is 200 N/m².

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2 years ago
Du lich quốc tế là gì
Lina20 [59]

Answer:

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Explanation:

5 0
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