Answer:
the awnser is 22
Explanation:
9+6 = 15 + 7 = 22 have a great day
Answer:
Fluorine(F),chroine(CI),bromine(BR),iodine(I)astatine(AT)
Explanation:
friend me when u say thank u
Answer:
9.2 grams of ethanol should be added.
Explanation:
Let the mass of ethanol be x
Density of an ethanol =
Volume of the ethanol =
Mass of chloroform = 5.0 g
Density of an chloroform=
Volume of the ethanol =
Mass of the mixture,m = x + 5.0 g
Density of the mixture =
Volume of the mixture=
Solving for x , we get
x = 9.2 g
9.2 grams of ethanol should be added.
Answer: 28.40
Explanation:
For A(27.977 u)
Mass number = 27.977
Abundance = 78.21%
For B (28.976 u)
Mass number = 28.976
Abundance = 1.346%
For C(29.974 u)
Mass number = 29.974
Abundance = 20.444%
Averages atomic mass
= (Mass of A x abundance of A)/100 + (Mass of B x abundance of B)/100 + (Mass of C x abundance of C)/100
= (27.977x78.21)/100 + (28.976x1.346)/100 + (29.974x20.444)/100
= 21.8808117 + 0.39001696 + 6.12788456
= 28.40
Volume of sphere =
where, =
r = radius of sphere
Put the given value of volume in above formula i.e. ()
Thus,
=
=
=
Thus, radius of the carbon atom is