Answer: One mole of lead (Pb) contains 6.02 × 1023 atoms and its mass is 207.2 g.
Explanation: please give me brainlist. i haven't been brainlist in a while. even my zodiac sign is ♓
Atomic mass Ca = 40.078 u.m.a
40.078 g --------------- 6.02x10²³ atoms
121 g ------------------- ??
121 x ( 6.02x10²³) / 40.078 =
7.28x10²⁵ / 40.078 = 1.81x10²⁴ atoms
Answer:
a lot that's why it's really hot
Answer:
50 g
Explanation:
d= m/v
rearranging the above equation
m = d x v
m = 2.5 g x 20 g/cm3
m = 50 g
Answer:
Given Elements are
- Ferrus(Fe)
- Zinc(Zinc)
- Sodium (Na)
- Copper (Cu)
- Silver(Ag)
<h3>Decreasing Order:-</h3>
Na>Zn>Fe>Cu>Ag
<h3><u>Expla</u><u>nation</u><u>:</u><u>-</u></h3>
- Here is the reactivity series of elements to let you understand better .