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son4ous [18]
3 years ago
14

Mendeleev arranged the elements by what physical property? atomic number atomic mass boiling point density

Chemistry
2 answers:
____ [38]3 years ago
5 0

Answer : The correct option is, Atomic mass.

Explanation :

According to Mendeleev, the elements and their compounds having same chemical properties showed a periodic trend. He arranged the elements having similar properties below each other into groups.

He arranged the elements in order of their increasing relative atomic masses.

Hence, the correct answer is, Atomic mass.

m_a_m_a [10]3 years ago
3 0
Mendeleev arranged the elements according to their atomic masses
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Viefleur [7K]
Yes it’s is bc I said so
7 0
3 years ago
Consider the following chemical reaction:
laiz [17]

Answer:

B. 1.65 L

Explanation:

Step 1: Write the balanced equation

2 SO₂(g) + O₂(g) ⇒ 2 SO₃(g)

Step 2: Calculate the moles of SO₂

The pressure of the gas is 1.20 atm and the temperature 25 °C (298 K). We can calculate the moles using the ideal gas equation.

P × V = n × R × T

n = P × V / R × T

n = 1.20 atm × 1.50 L / (0.0821 atm.L/mol.K) × 298 K = 0.0736 mol

Step 3: Calculate the moles of SO₃ produced

0.0736 mol SO₂ × 2 mol SO₃/2 mol SO₂ = 0.0736 mol SO₃

Step 4: Calculate the volume occupied by 0.0736 moles of SO₃ at STP

At STP, 1 mole of an ideal gas occupies 22.4 L.

0.0736 mol × 22.4 L/1 mol = 1.65 L

6 0
2 years ago
Compare the polymerisation reaction used to produce poly(ethene) with the
butalik [34]

Answer:

See explanation

Explanation:

Polymerization is the process whereby two or more monomers link together to form a compound of high molecular mass called a polymer.

There are two kinds of polymers;

-Addition polymers

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Addition polymers are formed by the joining of two or more monomers  to form a polymer without the elimination of a small molecule.

Condensation polymers are formed by the joining of two or more molecules  to form polymers with the elimination of a small molecule.

The main difference between polyethene and polyester is that polyethene is an addition polymer while polyester is a condensation polymer.

In polyethene, ethene molecules are joined together having the repeating unit as [-CH2-CH2-]n.

In polyester, the polymer arises from the reaction of carboxylic acid and an alcohol and loss of water molecules.

5 0
2 years ago
Give an example of a specialized cell.
Gre4nikov [31]

Answer:

Muscle cell

Explanation:

An example of a specialized cell would be a muscle cell, which allows muscles to contract. A specialized cell has a specific function.

4 0
2 years ago
Read 2 more answers
When water droplets in a cloud combine, become too heavy, and fall to the ground as snow, sleet or hail, we are experincing what
Elza [17]
That would be known as precipitation.
8 0
3 years ago
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