Answer:
I believe 1+
Explanation:
when Na loses 1 electron in the outer shell it has 8 valence protons on it's new most outer shell. so now it has 11 protons and 10 electrons. that extra proton (positively charged) adds one extra charge. so +1
Answer:
B)
Explanation:
The total ionic equation contains all the species in the reaction in the ionic form.
Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.
Spectator ions are also written in total ionic equations.
The chemical equation is:
The total ionic equation is -
Answer:
The correct answer is "142 g".
Explanation:
According to the question,
⇒ 
where,
Z = 2
F = 96500c
C = 30 A
t = 4h
= 
= 
We know that,
Atomic mass of Cu(M) = 63.5 g/mole
Now,
⇒ 
On putting the values, we get



Answer:
(A) 50 °C
Explanation:
Ideal gas law:
PV = nRT
If pressure is held constant, then:
V₁ / T₁ = V₂ / T₂
Substituting values:
(5.30 kL) / (12 + 273 K) = (6.00 kL) / T
T = 323 K
T = 50 °C