Given that,
Density of the liquid, d = 3 g/ml
Volume, V = 20 mL
To find,
The mass of the liquid.
Solution,
The density of an object is given by its mass divided by volume such that,
d = m/V
m is mass
m = d×V
Put all the values,
m = 3 g/mL × 20 mL
= 60 grams
Hence, the mass of a liquid is 60 grams.
Answer:
evolution is change over a period of time
#19
Polar nuclei fuse to produce Diploid secondary nucleus.
#20
After fertilisation the antipodal cells undergo meosis
#21
In which of the following double fertilisation occurs.
Ans:- Angiosperm s
#22..
In angiosperms pollen grains germinate on the Anther.
Answer:
Hydrolysis adds a water molecule into the middle of a polymer chain. The water splits into an OH- and H+ group and they bond with either end of the now-split polymer, which will continue to occur rapidly until the polymer is broken down into monomers.
The opposite of this is dehydration synthesis, when the H+ and OH- groups bond and form a water molecule, leaving the ends of the monomers to bond on their own and create a polymer.
Explanation:
