Answer:
CStO3
Explanation:
What is need to be done here is to first divide the percentage compositions by the respective atomic masses. Atomic mass of strontium is 90, that of oxygen is 16 and that of carbon is 12.
Let’s proceed with the divisions:
St = 59/90 = 0.656
O = 33/16 = 2.0625
C = 8/12 = 0.667
Now, we divide through all by the smallest answer which is 0.656:
St = 0.656/0.656 = 1
O = 2.0625/0.656 = 3.144 = 3
C = 0.667/0.656 = 1.0167 = 1
The empirical formula is thus CStO3
Answer:
9.0345 × 10¹⁸
Explanation:
Given:
Volume = 1.5 μL = 1.5 x 10⁻⁶ L
Molarity = 10 M
Now,
Number of moles = Molarity × volume
on substituting the values, we get
Number of moles = 10 × 1.5 x 10⁻⁶
or
Number of moles = 1.5 x 10⁻⁵
Also,
1 mole contains 6.023 × 10²³ molecules
therefore,
1.5 x 10⁻⁵ moles will contain = 6.023 x 10²³ × 1.5 × 10⁻⁵ = 9.0345 × 10¹⁸
Hence,
The number of C₆₀ molecules present are 9.0345 × 10¹⁸
Wait what
What
Huh
Kinda confused
Answer:
Absorbed during the above reaction.
Explanation:
It is lowering the temperature of the reaction mixture, and thus the reaction flask feels cold.
Explanation:
Wind helps to get out molecules of water from clothes.
In summer Ball is hard b because due to heat kinetic energy of molecules increases
