Answer:
Dominant traits are traits that more likely to be transferred from a parent to an offspring so scientist use this term dominant.
Answer:
The answer to your question is: 70.8%
Explanation:
Data
Al₂O₃ = 60 g
C = 30 g
CO = gas
Al = 22.5 g
MW Al₂O₃ = 102 g
MW C = 12 g
MW Al = 54 g
Reaction
Al₂O₃ + 3C ⇒ 3 CO + 2 Al
Limiting reactant
102 g of Al₂O₃ -------------- 54 g Al
60 g -------------- x
x = 31.8 g
36 g of C ------------------ 54 g of Al
30 g of C ------------------ x
x = 45 g of Al
Limiting reactant = Al₂O₃
Percent yield =
Percent yield = 70.75 %
4Al + 3O2 -------> 2Al2O3
1)100 g Al into moles
M(Al) = 27.0 g/mol
100g Al* 1 mol Al/27 g Al = 100/27 g/mol Al
2) 4Al + 3O2 -------> 2Al2O3
from reaction 4 mol 2 mol
given 100/27 mol x mol
x= (100/27)*2/4=50/27 mol Al2O3
3) 50/27 mol Al2O3 into g
M(Al2O3) = 2*27.0 + 3*16.0= 102 g/mol
(50/27) mol Al2O3 * 102 g Al2O3/1 mol Al2O3 = (50*102)/27≈ 189 g Al2O3
Answer: 189 g/mol Al2O3.
Calcium has an atomic number 20. This means that calcium has 20 electrons.
The electronic configuration of these 20 electrons is as follows: 2,8,8,2
For the calcium to become stable, it should have eight electrons in its outermost energy level.
Based on this, calcium loses two electrons to form an ion and become stable.
An organism goes through a cycle called development where it grows and changes. Living things can receive energy from their environment (eg:food) and use the energy to grow (get bigger, stronger, etc), develop and reproduce. Living things need energy in order to build up the substances that make up their cells.
Hope this helps! Good luck!