"<u>Nuclei</u>
" are called as building blocks of the universe.
Option: D
<u>Explanation</u>:
Smallest unit of this universe was considered to be an atom but “Rutherford 's Nuclear Model of Atom” in 1911 discovered nucleus which is small and heavy positively charged body present in center of atom. An atom also have extra nuclear part which is space around nucleus, where electrons (negative charged) are distributed. Nucleus is contained with protons (positive charged) and neutrons (neutral) which are definitely very smaller than nuclei but as a building unit or block of the universe nuclei is considered.
Answer:
100.8 dm3
Explanation:
mol= volume
_______
molar volume
Simply transpose the formula
volume=mol x molar volume
4.5molx22.4 mol/dm3
= 100.8dm3
NB STP=22.4 dm3 or 22400 cm3
The correct answer would be the first option. The arrows 1, 2 and 3 represent the phase transitions where heat energy is gained. As heat energy is gained the kinetic energy of the molecules in a substance is increased which would cause them to change phases from solid to liquid and to gas.
Answer: Antimony pentoxide
Hope this helps :)
Answer:
bad thing.
Explanation:
most of Greenland is an icy island with the only main population on the west coast.
Although this would probably open up more land for use; the rising sea levels are a much bigger threat comparatively with the perks of warmer climate.
