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xxTIMURxx [149]
3 years ago
13

A vertical column within the periodic table represents a family or ___

Chemistry
2 answers:
LekaFEV [45]3 years ago
8 0

The answer would be a Group.

UNO [17]3 years ago
3 0

Explanation:

Elements present in vertical columns of a periodic table represent a group or a family.

For example, elements of group 2 are beryllium, magnesium, calcium, strontium, barium, and radium.

Elements of a group have same number of valence electrons due to which they show same chemical properties.

Whereas elements present in a horizontal line depicts period in a periodic table.

For example, lithium, beryllium, boron and carbon they all belong to period 2 of the periodic table.

Hence, we can conclude that a vertical column within the periodic table represents a family or group.

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A copper cylinder, 12.0 cm in radius, is 44.0 cm long. If the density of commoner is 8.90 g/cm3, calculate the mass in grams of
inna [77]

The mass of the copper cylinder is 177065.856g

Given:

Radius of the copper cylinder R=12cm

Height of the copper cylinder H=44cm

Density of the cylinder=8.90 \frac{g}{c m^{3}}

To find:

Mass of the copper cylinder

<u>Step by Step by explanation:</u>

Solution:

According to the formula, Mass can be calculated as

\rho=\frac{m}{v} and from this

m=\rho \times v

Where, m=mass of the cylinder

\rho =density of the cylinder

v=volume of the cylinder

And also cylinder is provided with radius and height value.

So volume of the cylinder is calculated as

v=\pi r^{2} h

Where \pi=3.14

r=radius of the cylinder=12cm

h=height of the cylinder=44cm

Thus, v=3.14 \times 12^{2} \times 44

v=3.14 \times 144 \times 44

v=19895.04 \mathrm{cm}^{3}

And we know that, m=\rho \times v

Substitute the known values in the above equation we get

m=8.90 \times 19895.04  

m=177065.856g or 177.065kg

Result:

Thus the mass of the copper cylinder is 177065.856g

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