Question

1. What do you understand by area? State its SI unit.​

Answer 1

Explanation:

The molar mass of ethanoic acid is 2(12)+2(16)+4(1)=60 g/mol. The mass of ethanoic acid is divided with molar mass of ethanoic acid to obtain number of moles of ethanoic acid.

Number of moles of ethanoic acid =

60g/mol

2.5g

=0.04167mol

The mass of benzene is 75 grams or

1000

75

=0.075 kg.

The molality of ethanoic acid in benzene is the ratio of the number of moles of ethanoic acid to the mass of benzene (in kg).

It is

0.075kg

0.04167mol

=0.556m

Answer 2

Answer:

SI unit of area is square metre denoted as m 2 ^2 2

• Area (symbolized A ) is a two-dimensional quantity representing amount or extent of surface. The standard unit of area in the International System of Units ( SI ) is the meter squared (m 2 ). Area is usually measured or defined on a flat surface, also called a Euclidean plane, or on a spherical surface.