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iVinArrow [24]
3 years ago
9

QUESTION 1 A 2.5-g copper penny is given a charge of 4.0x10-9 C. If no more than one electron is removed from an atom, what perc

ent of the atoms are ionized by this charging process
Chemistry
1 answer:
wlad13 [49]3 years ago
7 0

Answer:

\%X=2.34*10^{-14}\%

Explanation:

From the question we are told that:

Mass M=2.5g

Charge q=4*0*10^{-9}

Generally the equation for Total number of Atoms in Penny is mathematically given by

 T_a=\frac{Mass}{atomic weight}*1mole

 T_a=\frac{2.5}{63.6}*6.02*10^{23}

 T_a=2.34*10^{27}atoms

Since Number of electrons in a penny is

 e =nT_a

 e=29*2.34*10^{27}

 e=6.86*10^{23}

Therefore

The percentage of the atoms are ionized by this charging process is given as

 \%X=\frac{T_a}{e}

 \%X=\frac{2.34*10^{27}}{6.86*10^{23}}

 \%X=2.34*10^{-14}\%

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diamong [38]

Answer:

Theoretical yield of C6H10 = 3.2 g.

Explanation:

Defining Theoretical yield as the quantity of product obtained from the complete conversion of the limiting reactant in a chemical reaction. It can be expressed as grams or moles.

Equation of the reaction

C6H11OH --> C6H10 + H2O

Moles of C6H11OH:

Molar mass of C6H110H = (12*6) + (1*12) + 16

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number of moles = mass/molar mass

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Using stoichoimetry, 1 moles of C6H110H was dehydrated to form 1 mole of C6H10 and 1 mole of water.

Therefore, 0.038 moles of C6H10 was produced.

Mass of C6H10 = molar mass * number of moles

Molar mass of C6H10 = (12*6) + (1*10)

= 82 g/mol.

Mass = 82 * 0.038

= 3.116 g of C6H10.

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4 years ago
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Answer:

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In a controlled experiment, only one variable should be tested while the others should be kept constant in order to have an effective result or outcome. This is the case in this question, the type of music or soil should be unchanged for each plant because the experimenter must make sure that he/she is testing/changing only one variable, and controling others.

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