Explanation:
option A skeleton system is correct option
hope this helps you !
Answer:
-41. 47
Explanation:
m = q / Cp x T
m = Mass
q = Energy (or joules)
Cp = Heat Capacity
T = Change in Temperature
Water's heat capacity is always 4.18.
This is the formula you'll need for change in temperature:
Final - Initial
So, 33 - 78 = -45
m = 7800 / 4.18 x -45
= -41.47
Answer:
Cl2.
Explanation:
? + 2NaBr → 2NaC1l+ Br2
Note that the element Cl (chlorine) is missing from the left side.
The answer is Cl2 (to balance the equation it requires 2 Cl's).
