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2 years ago

Which one is the least reactive element is Ar Na СІ Mg

Chemistry

1 answer:

34kurt2 years ago

7 0

Answer:

Explanation:

does not react with anything it has a full electron shell so it does not combine and it is a noble gas

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Water has a higher boiling point than expected because

Nadya [2.5K]

Evaporation occurs when water molecules on the surface gain enough energy to enter the atmosphere. However, stronger intermolecular forces between water molecules cause them to be strongly attracted to each other and to tend to stay in the liquid phase. When the temperature is raised (when heat is applied), more molecules gain the energy needed to escape these intermolecular forces and go into the vapor phase.
Therefore the best answer is D.

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3 years ago

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The chemical agent or hazardous material that interferes with the body's ability to transfer oxygen to the cells is:

zheka24 [161]

Phosgene its a my friend used in the war

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3 years ago

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Find the percentage composition of a compound that contains 1.94 g of carbon, 0.48 g of hydrogen, and 2.58 g of sulfur.

Svetradugi [14.3K]

Answer : The percentage composition of carbon, hydrogen and sulfur in a compound is, 38.8 %, 9.6 % and 51.6 % respectively.

Explanation :

To calculate the percentage composition of element in sample, we use the equation:

$\%\text{ composition of element}=\frac{\text{Mass of element}}{\text{Mass of sample}}\times 100$

Given:

Mass of carbon = 1.94 g

Mass of hydrogen = 0.48 g

Mass of sulfur = 2.58 g

First we have to calculate the mass of sample.

Mass of sample = Mass of carbon + Mass of hydrogen + Mass of sulfur

Mass of sample = 1.94 + 0.48 + 2.58 = 5.0 g

Now we have to calculate the percentage composition of a compound.

$\%\text{ composition of carbon}=\frac{1.94g}{5.0g}\times 100=38.8\%$

$\%\text{ composition of hydrogen}=\frac{0.48g}{5.0g}\times 100=9.6\%$

$\%\text{ composition of sulfur}=\frac{2.58g}{5.0g}\times 100=51.6\%$

Hence, the percentage composition of carbon, hydrogen and sulfur in a compound is, 38.8 %, 9.6 % and 51.6 % respectively.

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3 years ago

Some of the most dangerous conditions occur when temperatures are hovering around _______ degrees fahrenheit, or freezing, when

Olin [163]

Answer:

32 ° F

Explanation:

Freezing temp for water is 32 degrees at 1 atm

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2 years ago

Salt is an element or a compound?

Afina-wow [57]

Answer:

Salt is a compound

Explanation:

Pure salt consists of the elements sodium and chlorine. Its chemical name is sodium chloride and its formula is NaCl. ... Table salt is a chemically simple combination of two components, sodium and chlorine.

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2 years ago