Answer:
prokaryot cells doesn't have core or kernel like archeabacteria and eubacteria , but eukaryotes have it .
Explanation:
Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA
Answer:
41.4%
Explanation:
The salt copper II fluoride tetrahydrate is a hydrated salt. A hydrated salt is a salt that has some molecules of water of crystalization attached to its structure. The formula of the salt is CuF2.4H2O
The first step is to calculate the molecular mass of the compound as follows
[64 + 2(19) + 4((2×1) + 16)] = [64 + 38 + 72]= 174gmol-1
Mass of water of crystallization= 4((2×1) + 16) = 72 g
Percentage by mass of water of crystallization= 72 / 174 ×100
Percentage by mass of water if crystalization = 41.4%
Answer:
.02232 mole
Explanation:
At STP each 22.4 liters is a mole
.5 liters / 22.4 l/mole = .02232 mole
the kinetic energy is the same as the canoes weight times its speed times the force of gravity.
Answer:
Iron (Fe)
Explanation:
# of protons is the atomic number of the element
the element with the atomic number 26 is Iron
with 26 electrons this means it is Iron with no charge
with 30 neutrons this means the atomic weight will be
26 (protons) + 30 (neutrons) = 56
the real atomic weight of iron listed on the periodic table is 55.845, this rounded up is 56.
