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2 years ago

What information can you figure out about an atom using only the atomic number?

Chemistry

2 answers:

KiRa [710]2 years ago

4 0

The number of protons

tresset_1 [31]2 years ago

4 0

The number of atoms

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The unbalanced equation for the reduction of copper(I) sulfide with oxygen is given below. What mass of copper is produced from

uranmaximum [27]

<u>Answer:</u> The mass of copper produced is 7.12 grams

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

Given mass of copper (I) sulfide = 8.80 g

Molar mass of copper (I) sulfide = 156.2 g/mol

Putting values in equation 1, we get:

$\text{Moles of copper (I) sulfide}=\frac{8.80g}{156.2g/mol}=0.056mol$

The chemical equation for the reaction of copper (I) sulfide and oxygen gas follows:

$Cu_2S+O_2\rightarrow 2Cu+SO_2$

By Stoichiometry of the reaction:

1 mole of copper (I) sulfide produces 2 moles of copper

So, 0.056 moles of copper (I) sulfide will produce = $\frac{2}{1}\times 0.056=0.112mol$ of copper

Now, calculating the mass of copper from equation 1, we get:

Molar mass of copper = 63.55 g/mol

Moles of copper = 0.112 moles

Putting values in equation 1, we get:

$0.112mol=\frac{\text{Mass of copper}{63.55g/mol}\\\\\text{Mass of copper}=(0.112mol\times 63.55g/mol)=7.12g$

Hence, the mass of copper produced is 7.12 grams

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3 years ago

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dusya [7]

Answer:

Which one? 1, 2, 3, 4 ,5, 6, or 7?

Explanation:

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3 years ago

compound of aspartame is a dipeptide that is often used as a sugar substitute which functional groups are present

Scrat [10]

Answer:

Carboxyl, primary amine, amide, ester, and phenyl.

Explanation:

The functional groups present in the compound of aspartame are carboxyl, primary amine, amide, ester, and phenyl. Aspartame is an artificial non-saccharide sweetener which is 200 times sweeter than sucrose. This aspartame is commonly used as a sugar substitute in many foods and beverages. It has the trade names such as NutraSweet, Equal, and Canderel.

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2 years ago

A student mixes two clear liquids together. After a few minutes, a white powdery solid can be seen settling on the bottom of the

Dmitry [639]

Answer:

Explanation:

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3 years ago

A solution is prepared by diluting 6.0 mL of a 7.6 x 10-4 g/mL solution to a total volume

MissTica

Answer:

4.56 X 10^ -4 g/mL

Explanation:

A solution is prepared by diluting 6.0 mL of a 7.6 x 10-4 g/mL solution to a total volume of 10.0 mL. Calculate the concentration of the dilute solution.

(7.6 X10^-4 gm/m L) x( 6.0 m L ) = 45.6 X 10^-4 g

this is dissolved )in 10 m L=45.6 X 10^-4 g/ 10

4.56 X 10^ -4 g/mL

check

6/10 =0.6

4.56/7.6 = o.,6

4 0

2 years ago

What information can you figure out about an atom using only the atomic number?​

What information can you figure out about an atom using only the atomic number?