Li is in group 1 so it has same number of valence electrons as hydrogen.
hope it helps.
Answer:
Universe.
Explanation:
Biosphere is just a planet. Solar system contains planets and star. Galaxy holds multiple solar systems only. Universe hold everything, biospheres, solar systems, and galaxies. I hope this helps :D
Number of molecules NH₃ = 4.45 x 10²²
<h3>Further explanation
</h3>
A mole is a number of particles(atoms, molecules, ions) in a substance
This refers to the atomic total of the 12 gr C-12 which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles
Can be formulated :
N = n x No
N = number of particles
n = mol
No = 6.02.10²³ = Avogadro's number
mol of NH₃ = n = 0.074
So the number of molecules :

Answer:
Explanation:
yes leon is correct because matter is anything that takes space and also has mass in it.
thks.
Answer:
<h2>The answer is 14.29 %</h2>
Explanation:
The percentage error of a certain measurement can be found by using the formula

From the question
actual density = 0.70 g/mL
error = 0.8 - 0.7 = 0.1
So we have

We have the final answer as
<h3>14.29 %</h3>
Hope this helps you