Answer:
6.02 x 10²³ electrons
Explanation:
Given parameters:
Mass of H₂ = 2g
Unknown:
Number of electrons = ?
Solution:
To find the number of electrons, we must determine the number of moles of H₂ first.
Number of moles = 
Molar mass of H₂ = 2(1) = 2g/mol
Number of moles = 
= 1mol
1 mole of a substance contains 6.02 x 10²³ particles
the particles can be protons, neutrons, electrons
So,
2g of H₂ will contain 6.02 x 10²³ electrons.
I believe the medulla is the answer.
Explanation:
Steroid contains a steroidal ring and are devoid of fatty acid chain. The steroidal nucleus is a fused ring consisting of three six membered rings, and a five membered ring.
Examples of steroidal molecules include, cholesterol, steroidal hormones such as estrogen(estradiol) progestrone, testoterone and corticosteroidal hormones such as cortisol, aldosterone and cortisone.
Solution :
We know that :
and 
Then, 
..................(1)
Where,
= amount of solvent (in kg)
= amount of solute (in kg)
= molar mass of solute (g/mole)
= molality of solution (mole/kg)
Given :
= 
, 
= 0.250 kg, = 24.3 g
Then putting this values in the equation is (1),
g/mole
So, the molar mass of the unknown compound is 158.49 g/mole.
Answer:
Before you use log you have to multiply the answer of 8.66 mol by 6.02⋅1023 by 3 because the answer of 8.66 mol by 6.02⋅1023 gives you the number of ammonia molecules and in each molecules there are 3 hydrogen atoms present.
Explanation:
