Answer : Option C) The kinetic energy decreases as potential energy increases.
Explanation : As the target is fired high on the wall, the change in the energy that is observed as the arrow moves towards the target is kinetic energy starts to decrease as the arrow reaches nearer towards the target and the potential energy is observed to increase. So, in short the energy transformation is from kinetic energy from a moving arrow to potential energy when the arrow hits the target.
Answer:
Explanation:
MgSO4 + 2NaOH -------> Mg(OH)2 + 2NaSO4
CuCl2 +2NaOH -------> Cu (OH)2 + 2Nacl
FeCl3 + 3NaOH ----> Fe(OH)3 + 3NaCl
based on this can you try for the FeSO4. similar to first reaction showed above
Answer: Lost 3 electrons
Explanation:
Ions are postively or negatively charged atom. The postively charged are called cations while the negativity charged are called anions.
Atom becomes positively charged by losing electrons while negatively charged by gaining electrons.
So, the +3 ion means it has lost 3 electrons
Answer:
from
H=mc∆T
where by;
H is amount of heat.
m is mass of water.
c is specific heat of water.
∆T is change in temperature.
m=density ×volume
m=1.00g/ml×45.7ml
m=45.7g
∆T=Tt-T°
∆T=41.3°C-23.6°C
∆T=17.7°C
H=45.7g×4.184j(g•°C)×17.7°C
H=3,384.396J
H=3,384.396÷1000
H=3.384kJ
Explanation:
H=mc∆T
where by;
H is amount of heat.
m is mass of water.
c is specific heat of water.
∆T is change in temperature
Because their ions are free to move from place to place. Ionic compounds cannot conduct electricity when solid, as their ions are held in fixed positions and cannot move.