An atom of carbon has 4 electrons in its outermost shell, which means that
<span>its ionic charge is 4+ or 4-
</span>Si is in same group as carbon so its also 4+ or 4-
Germanium is 4+.
Sn is also 2+ or 4+
Pb is usually +2
Answer:
78.5 minutes
Explanation:
distance; 85 miles to Wichita
velocity: 65 miles/hr
85 miles / 65 (miles/hr) = 1.308 hours
1 hr = 60 minutes
1.308 hr x 60 = 78.46 minutes.
Answer:
4. ΔU = Q + W
Explanation:
Equation 4 corresponds to the definition of internal energy of a substance as part of a system. This equation is always valid and is fulfilled in all types of systems and refers to the known phrase:
"energy is neither created nor destroyed, transformed"........First Law of Thermodynamics