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3 years ago

5. Which are generally less soluble, compounds with chlorate ions or carbonate ions?

Chemistry

1 answer:

Vitek1552 [10]3 years ago

7 0

Answer:

Compounds with Carbonate ions are less soluble than the compounds with Chlorate ions.

Explanation:

The reason is that the compounds with carbonate ions have less attraction between positive and negative charges. (Solvation)

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The concentration of copper(II) sulfate in one brand of soluble plant fertilizer is 0.070% by weight. If a 21.5 g sample of this

Semmy [17]

Answer:

The molar concentration of $Cu^{2+}$ ions in the given amount of sample is $4.73\times 10^{-5}M$

Explanation:

Given that,

Mass of sample = 21.5 g

0.07 % (m/m) of copper (II) sulfate in plant fertilizer

This means that, in 100 g of plant fertilizer, 0.07 g of copper (II) sulfate is present

So, in 20 g of plant fertilizer

, $=\frac{0.07}{100}\times 21.5}\\=0.0151g$ of copper (II) sulfate is present.

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}}{\text{Molar mass of solute}\times \text{Volume of solution (in L)}}$

Mass of solute (copper (II) sulfate) = 0.0151 g

Molar mass of copper (II) sulfate = 159.6 g/mol

Volume of solution = 2.0 L

$\text{Molarity of solution}=\frac{0.0151g}{159.6g/mol\times 2.0L}\\\\\text{Molarity of solution}=4.73\times 10^{-5}M$

The chemical equation for the ionization of copper (II) sulfate follows:

$CuSO_4\rightarrow Cu^{2+}+SO_4^{2-}$

1 mole of copper (II) sulfate produces 1 mole of copper (II) ions and sulfate ions

Molarity of copper (II) ions = $4.73\times 10^{-5}M$

Hence, the molar concentration of $Cu^{2+}$ ions in the given amount of sample is $4.73\times 10^{-5}M$

4 0

3 years ago

Science is a unique field of thought because it relies on _______ to describe the world. A Teachers and students B Observations

Norma-Jean [14]

Answer:

B) Observations and experimentation

Explanation:

this is the most suitable words to describe how is Science used in describing the world. we collect the knowledge in organized way and provide it with explanations and start to predict about the future world

ِAny Inventions are based on Science and no Inventions without Observations and experimentation

No one of us have went to a chemistry or a physics labs without using Observations and experimentation

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3 years ago

What is the difference between an atom and an element?

Travka [436]

Answer:

A particular atom will have the same number of protons and electrons and most atoms have at least as many neutrons as protons. An element is a substance that is made entirely from one type of atom

Explanation:

so In simple terms an atom contains Protons and Electrons and can be found in an Element, but an element comprises of atoms which come together to form up that particular Element

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3 years ago

The process of an atom releasing energy when it moves to a lower energy state is called

Inga [223]

The process of an atom releasing energy when it moves to a lower energy state is called emission.

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3 years ago

A plant fertilizer contains 15% by mass nitrogen (N). In a container of soluble plant food, there are 12.2 oz of fertilizer. How

ale4655 [162]

51.86 grams would be in the container.

One ounce is an equivalent of 28.34 grams, so times that by 12.2
.
12.2 * 28.34 = 345.75.

Put the percentage into decimal form, so 15% would now be 0.15.

0.15 * 345.75 = 51.86.

8 0

3 years ago

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