Question

este lentheguata the meter of the mereury atom ( 2003
hemen
the volume ore de votre ex
was well as the due ferath ofenbeistem. Now.
t es
200*1.60*10**
cm 2.9 * to'em
0 ************ ***** ***
***********
****
tepe ring natural abundance 0.012% of potassium isotopes
opreme
* *
est hy sinking one cup of hole milk containing 370 met
atten. Amount of 40 in 170m 370*0.01
20
100g -0.0444 mg
10 has toms of 40 - 6.02310
0.0444 10 40 has atoms - 6.023 * 10" 0.0444 10
-6.69 x 10" atoms
19. What is the volume of water in ml of 3.0
er in ml of 3.011 * 10 molecule of water ? (d = 1g/ml)
1023189 Volume
mass-9ml
2011
Solution.
Mass - 3.011* 10
0.023 1023 189
density 19 ml
Exercise-01
007 mole of a compound weighs 1 g. Calculate the molecular mass of the compound.
Ans. 100
What weight of Ca will contain the same number of atoms as are present in 3.2 g of sulhpur.
Ans. 4 g of C:
3. Mass of one atom of an element
one atom of an element X is 2.32481 x 10-20 g. Express this in amu.
Ans. 14 amu
wam200 me CO. 10-molecules are removed. How many moles of Co. are left?
Ans. 2.885 x 10
5. Equal masses of O, H, and methane are ta
are taken in a container in identical conditions. Find the ratio of their moles.
Ans. 1: 16:2
6. Atomic weight of Alon a non-conventional scale is found to be 18 while on conventional scale, it is 27.
) th
On the new scale an amu is defined as
Med 2.
-
part by weight of C-12. Here x is.
Ans. 8
7. Find the number of g-molecules of oxygen in 6.023 x 102CO molecules-
Ans. 5
HEMISTRY
Mole Concept-I​

Answer 1

Answer:

kg do l ik do good ok s as li