7 protons, 7 electrons and 7 neutrons
ATOMIC # = # of Protons and Electrons
MASS # - ATOMIC # = # of Neutrons
In an orderly, repeating, three-dimensional pattern called a crystal lattice.
Convert to mols first take 47.6 divide by mr of al2... then times 6.2 times 10^3
Answer:
132 g
Explanation:
Given data:
Mass of silver nitrate react = 260 g/100×80 = 208 g
Mass of silver metal produced = ?
Solution:
Chemical equation:
Cu + 2AgNO₃ → 2Ag + Cu(NO₃)₂
Number of moles of AgNO₃:
Number of moles = mass/molar mass
Number of moles = 208 g/ 169.87 g/mol
Number of moles = 1.22 mol
Now we will compare the moles of silver with solver nitrate from balance chemical equation.
AgNO₃ : Ag
2 : 2
1.22 ; 1.22
Mass of Ag:
Mass = number of moles × molar mass
Mass = 1.22 mol × 107.8682 g/mol
Mass = 132 g
DNA replication must create two sets of chromosomes.
Explanation:
Mitosis is where the cell divides itself into two identical parts.
In order for the two cells to be identical, they need to have the same parts, which is where replication is important
If the cell didn't replicate its organelles, it would not be able to split itself since nothing would go into one of the halves
Replication is the duplication of those organelles so that the sister cells are the same, so making a copy of the nucleus and other organelles allows one of those parts to stay and one part to go into the new cell