1) Molar mass C5H12= 5*12 +1 *12=60+12=72 g/mol
2) 40g C5H12 * 1 mol C5H12/72 g C5H12 = 40/72 mol C5H12
3) C5H12 + 8O2 ------> 5CO2 + 6H2O
by reaction 1 mol 8 mol
from problem 40/72 mol x mol
x=(40/72) * 8/1=(40*8)/72=(40)/9 mol O2
4) M(O2)=2*16 g/mol =32 g/mol
5) (40)/9 mol O2 *(32 g O2/ 1 mol )=(40 * 32)/9 =142.2 g O2
The fraction of gas phase molecules is calculated by the division of final pressure to the initial pressure.
Fraction = (1)
Here, initial pressure = 1.0 atm
final pressure =
First, convert torr into atm
1 atm = 760 torr
final pressure =
=
Now, put the value of initial and final pressure in formula (1)
Fraction =
=
Thus, fraction of the gas phase molecules =
Pink flower (c)
The offspring is a blend of the two parents.
Hope this helps!
Answer:
molecule
Explanation:
Water is a molecule because it contains molecular bonds. Water is also a compound because it is made from more than one kind of element (oxygen and hydrogen).
Answer:
The subscript is 4
Explanation:
The given molecule is written as:
Therefore, the subscript is 4
The coefficient is 5.
The significance of is 5 molecules of
The number of molecules is 5 because the coefficient is 5.
The charge of the molecule is -2.