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3 years ago

On the basis of the diagram, which of the following statements is true?

Chemistry

2 answers:

Furkat [3]3 years ago

5 0

The answer is d I'm pretty sure because the second one and the first one don't make sense but I'm not 100 percent positive about it not being d ..... sorry if it's wrong.

nordsb [41]3 years ago

3 0

Answer:

Explanation:

The answer is sulfate ions will move from left to right through the salt bridge

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PLEASE HELP WILL MARK AS BRAINLEST

zlopas [31]

Answer:

The deer population will grow

This is because the Moutain Lions were eating the deer and now nothing is eating them.

8 0

3 years ago

In an experiment, a student made a compund of sulfur and copper, and now she needs to find if the compound is copper (I) sulfide

finlep [7]

Answer: The formula for the given compound is $Cu_2S$

Explanation:

An ionic compound is defined as the compound which is formed when electron gets transferred from one atom to another atom. These are usually formed when a metal reacts with a non-metal.

The chemical formula of copper (I) sulfide is $Cu_2S$ because this is formed by the combination of $Cu^+$ ions and $S^{2-}$ ions

The chemical formula of copper (II) sulfide is $CuS$ because this is formed by the combination of $Cu^{2+}$ ions and $S^{2-}$ ions

To calculate the percent composition of element in a compound, we use the equation:

$\text{Percent composition of element}=\frac{\text{Mass of element}}{\text{Mass of compound}}\times 100$ ...........(1)

For copper (I) sulfide:

Mass of copper = (2 × 63.546) = 127.092 g/mol

Mass of copper (I) sulfide = 159.16 g/mol

Putting values in equation 1, we get:

$\text{Percent composition of copper in }Cu_2S=\frac{127.092g}{159.16g}=79.85\%$

For copper (II) sulfide:

Mass of copper = 63.546 g/mol

Mass of copper (II) sulfide = 95.611 g/mol

Putting values in equation 1, we get:

$\text{Percent composition of copper in CuS}=\frac{63.546g}{95.611g}=66.46\%$

Given compound:

Mass of copper in given compound = 0.8383 grams

Mass of given compound = 1.0440 grams

Putting values in equation 1, we get:

$\text{Percent composition of copper in given compound}=\frac{0.8383g}{1.044g}=80.29\%$

The percent composition of copper is close to the composition in copper (I) sulfide.

Hence, the formula for the given compound is $Cu_2S$

8 0

3 years ago

Name the parts of a chemical reaction, and describe both

Reil [10]

The parts of a chemical reaction are the reactants and products. The reactants are on the left side of the chemical equation and they are what’s gonna go through a chemical reaction and change properties. The products are the result of the chemical reaction

5 0

3 years ago

Scientific data can be organized into different types of graphs. Which type of graph would best illustrate the information from

matrenka [14]

C. bar graph
I think it is the most suitable.

4 0

3 years ago

How many molecules of water are needed to completely break apart a polymer that is 11 monomers long?

tankabanditka [31]

I believe the answer is 10

6 0

3 years ago