Answer:
the reactor was overheating
A. When two chemicals mix their temperature rise: <span>Exothermic
b. </span>A solid burns brightly and releases heat, light and sound: <span>Exothermic
c. </span>When two chemicals are mixed their temperature drops: <span>Endothermic
d. </span>Two chemicals will only react if you heat them continually: <span>Endothermic
e. </span>Plants take in light energy for photosynthesis: <span>Endothermic
I hope this helps :)</span>
Answer:
134K
Explanation:
Using the ideal gas law equation;
PV = nRT
Where;
P = pressure (atm)
V = volume (Litres)
n = number of moles (mol)
R = gas constant (0.0821 Latm/Kmol)
T = temperature (K)
Based on the information provided, n = 1.4moles, P = 3.25atm, V = 4.738L, T = ?
3.25 × 4.738 = 1.4 × 0.0821 × T
15.3985 = 0.11494T
T = 15.3985/0.11494
T = 133.969
Approximately;
T = 134K
Answer:
The heat lost by the water
3.8 KJ
The heat gain by ice
= 228.76 J
The heat required to melt the ice
= 3340 J
Explanation:
Mass of ice cube
= 10 gm
Initial temperature of ice cube
= 0 °c
Mass of water
= 100 gm
Initial temperature of water
= 20 °c
Final temperature of mixture
= 10.93 °c
(a). Total heat lost by the water
(
-
)
⇒
100 × 4.184 (20 - 10.93)
⇒
3.8 KJ
This is the heat lost by the water.
(b). Heat gained by the ice cube
=

⇒
= 10 × 2.093 × ( 10.93 - 0)
⇒
= 228.76 J
This is the heat gain by ice.
(C). Heat required to melt the ice
=
× Latent Heat
⇒
= 10 × 334
⇒
= 3340 J
This is the heat required to melt the ice.
Answer:
Metals Good conductors of electricity good conductors of heat
High density
Malleable and ductile
Non-metals
Poor conductors of electricity
Poor conductors of heat
Low density
brittle