Hi! I think the answer is option B. I hope
this helps, Goodluck :)
Answer:
3,32e-14 moles
Explanation:
We use the number of Avogadro:
6,02e23 molecules-------1 mol
2e10molecules------------X =2e10/6,02e23= 3,32x-14 moles
Gymnosperm seeds develop either on the surface of scales or leaves, which are often modified to form cones, or solitary as in yew, Torreya, Ginkgo.
Answer:
To find the number of neutrons in an isotope, subtract the number of protons from the atomic mass of the isotope. The atomic number of the element equals the number of protons.
