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3 years ago

Find the volume of an object that has a density 0f 3.14g/mL and a mass of 87.3g

Chemistry

1 answer:

pav-90 [236]3 years ago

3 0

Answer:

<h3>The answer is 27.80 mL</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

$volume = \frac{mass}{density} \\$

From the question

mass = 87.3 g

density = 3.14 g/mL

We have

$volume = \frac{87.3}{3.14} \\ = 27.8025477...$

We have the final answer as

Hope this helps you

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Neutral atoms of argon, atomic number 18, have the same number of electrons as each of the following items except: Cl- S -2 K+ C

irinina [24]

Answer:

Ne.

Explanation:

Neutral argon, atomic number 18, has 18 electrons.

Cl⁻:

Neutral atom of Cl, atomic number 17, has 17 electrons.

When it gains electron and be Cl⁻, then it has 18 electrons a neutral Ar.

S²⁻:

Neutral atom of S, atomic number 16, has 16 electrons.

When it gains 2 electrons and be S²⁻, then it has 18 electrons a neutral Ar.

K⁺:

Neutral atom of K, atomic number 19, has 19 electrons.

When it losses electron and be K⁺, then it has 18 electrons a neutral Ar.

Ca²⁺:

Neutral atom of Ca, atomic number 20, has 20 electrons.

When it losses 2 electrons and be Ca²⁺, then it has 18 electrons a neutral Ar.

Ne:

It is a noble gas that has 10 electrons.

So, the right choice is: Ne.

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3 years ago

The energies of electrons are quantized. What does that mean?.

professor190 [17]

Answer:

The correct statement should be The energies of electron are quantized when they are bounded to an atom.

In Quantum Mechanics The term Quantization used to measure the physical entities having certain discrete value. When we say energies of electron are quantized that means it have some specific values that are allowed, that is not continuous range of values.

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4 0

2 years ago

What type of substances dissolve most readily in water

svp [43]

The substances which dissolve most readily in water are called soluble substances and they are likely those substances which have the same polarity as water.

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3 years ago

Answer in 6 min plz ..............

butalik [34]

Answer: The chemical symbol of the compound formed is $XCl$ or $NaCl$

Explanation:

An ionic compound is formed when the complete transfer of electrons takes place from one element (usually metals) to another element (usually non-metals).

The element losing electron (metal) forms a positive ion known as a cation while the element gaining electron (non-metal) forms a negative ion known as an anion.

Element X has the atomic number 11 which is sodium. The electronic configuration of it is $1s^22s^22p^63s^1$

This element will lose 1 electron to form $X^+$ ion of $Na^+$

Chlorine has the atomic number 17. The electronic configuration of it is $1s^22s^22p^63s^23p^5$

This element will gain 1 electron to form $Cl^-$ ion

When these two ions combine, they lead to the formation of an ionic compound having a chemical formula of $XCl$ or $NaCl$

Hence, the chemical symbol of the compound formed is $XCl$ or $NaCl$

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2 years ago

Which type of chemical reaction occurs in C6H12+9O2->6CO2+6Y2K

Minchanka [31]

It would be a combustion reaction (B) because the products are carbon dioxide and water.

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3 years ago