8
It’s 8 bc I said it was 8 ;)
Answer:
151.1J
Explanation:
Given parameters:
Mass of iron = 6.21g
Initial temperature of iron = 25°C
Final temperature of iron = 79.8°C
Unknown:
Amount of heat = ?
Solution:
The amount of heat require to cause this temperature can be determined using the expression below;
H = m c (T₂ - T₁)
H is the amount of heat
m is the mass
c is the specific heat capacity
T is the temperature
Specific heat capacity of iron 0.444J/g°C
Insert the parameters and solve;
H = 6.21 x 0.444 x (79.8 - 25)
H = 151.1J
oxygen is in gaseous state at this temperature
I believe the answer is option B. The bonded pair of valence electrons are shown using circles
Molarity is moles of solute per liter of solvent, so convert 58 g NaCl to moles, then divide by 1 liter to get your answer
