In the nucleus of each cell, The DNA molecule is packaged in to thread like structures called chromosomes.
6.023*1023 He atoms=1 mole He
1.23×1024 helium atoms=1.23×1024/6.023*1023 =2.042 mole He
one mole He=4.0 gm
2.042 mole He=2.042*4.0=8.168 gm
answer in grams of Helium is 8.168 gm
Answer:
Ornaments are made of metal because they are lustrous and temple bells are made of metals because they have the property of sonority
Lustrous- property of metal by virtue of which metals can shine is known as lustre
sonority- property of metals by virtue of which metals produce a ringing sound is known as sonority
That's because the first and last carbon atoms cannot be branched to form an isomer . Therefore only the three middle carbon atoms can form isomers.
Two [hydrogen] atoms and one [oxygen] atom