Answer:
A: the atomic number
C: the number of protons
D: the number of electrons
Answer:
i was thinking it would be best to use dish cloth
Explanation:
if u just use a plastic scrubber to wash dishes than it would be most likely to make it more duty than using a cloth however it is clean only problem for dish cloth is after using it for 2 or 3 months most likely two you would have to wash i know this because I've done it before and i found out that dish cloth is much better and safer to use. i pray i got the right answer if not hey i was just trying to help y'all its alright with me
A law in Chemistry ; the elements when arranged in the order of thier atomic numbers show periodic varation of the autmoic structure and of their most properties - Also know as the Mendeleev's Law
Answer:
d. n H2(g) = 0.034 mol
Explanation:
- 2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)
2 - Na - 2
4 - H - 4
2 - O - 2
∴ n Na(s) = 0.068 mol
⇒ n H2(g) = ( 0.068 mol Na(s) )( mol H2(g) / 2 mol Na(s) )
⇒ n H2(g) = 0.034 mol
The density of the sample : 0.827 g/L
<h3>Further explanation</h3>
In general, the gas equation can be written
where
P = pressure, atm , N/m²
V = volume, liter
n = number of moles
R = gas constant = 0.082 l.atm / mol K (P= atm, v= liter),or 8,314 J/mol K (P=Pa or N/m2, v= m³)
T = temperature, Kelvin
n= 1 mol
MW Neon = 20,1797 g/mol
mass of Neon :
The density of the sample :
or We can use the ideal gas formula ta find density :
