Battery chemicals being turned to electricity
Answer:
Explanation:
The atomic radius of elements are used to estimate the sizes of elements. The atomic radius is taken as half of the inter-nuclear distance between two covalently bonded atoms of non-metallic elements or half of the distance between two nuclei in the solid state of metals.
To solve this problem we will obtain the atomic radius values of the given elements from a standard atomic radius table;
Si 111 pm
P 98 pm
Cl 79 pm
S 87pm
pm = picometer
We see that chlorine has the least atomic radius
Answer:
Q = 6688 J
Explanation:
Given data:
Energy absorbed = ?
Mass of water = 80 g
Initial temperature = 40°C
Final temperature = 60°C
Solution:
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
specific heat capacity of water 4.18 j/g.°C
ΔT = 60°C - 40°C
ΔT = 20°C
Q = 80 g ×4.18 j/g.°C × 20°C
Q = 6688 J
The person above me is correct
The solution of Ba(OH)2 will have the lowest freezing point. This is because it dissociates into 3 ions, one Ba and 2 OH, which is more than any of the others. Freezing point depression is a colligitive property of water that depends, in part, on the number of ions.
hope it helps
