Explanation:
from definition of density we have
density=mass/volume
and density=55 mass=220g
volume=220/55
volume=4ml
or 4×10^-3l
Answer:
Energy levels 4-7
Explanation:
The energy levels in an atom are shown by the principal quantum number (n). Typically, the d orbitals begins to occur from the third energy level through the seventh energy level.
Most second and third row d-block elements are found between energy level n=4 and energy level n= 7 in the periodic table. Hence the answer
Explanation:
here's the answer to your question
The lead acid battery produces energy by oxidation of lead. The amount of lead oxidized in this case is 1.47 g.
<h3>What is lead acid battery?</h3>
The lead acid battery is the common accumulator that we have in use. It is made up of a cell that contains lead electrodes in an acid.
The oxidation of lead occurs according to thr equation;
Pb(s) ----> Pb^2+(aq) + 2e
If 207 g of Pb is oxidized by 2(96500)C
x g of lead is oxidized by (221 * 6.20) C
x = 207 g * (221 * 6.20) C/2(96500)C
x = 1.47 g
Learn more about lead acid battery: brainly.com/question/8341588
Answer:
1) In all energy transformations,kinetic energy changes.