Answer:
Heat change = 3.77kJ
Explanation:
T1 = 25°C
Mass = 65g
T2 = 30°C
specific heat capacity of water = 4.184J/g°C
Heat energy = ?
Heat energy = MC∇T
Heat energy (Q) = MC(T2 - T1)
Q = 65 * 4.184 * (30 - 15)
Q = 251.04 * 15
Q = 3765.6J
Q = 3.77KJ
The heat change during the reaction was 3.77kJ
Answer:
please mark as brainliest!!
Explanation:
ans: gas
The same number of particles in a gas spread further apart than in the liquid or solid states. The same mass takes up a bigger volume . This means the gas is less dense. Density also depends on the material.
<span>C-C and C-H bonds are relatively stable because
they have low bond dissociation energy
13. Dispersion forces are caused by the __________,
motion of electrons
Hope this answers the question. Have a nice day.</span>
You need 4 H2 molecules and 2 O2 molecules.
This is because water is H2O which is 2 Hydrogen and 1 Oxygen so if you want to make 4 water molecules, you’ll need 8 hydrogen and 4 oxygen.
Given H2 you need 4 because 4•2 is 8 and for O2 you need 2 because 2•2 is 4.
I hope this makes sense.
Answer:
The density of the pebble is 0.483g/mL (rounded), but it's 0.48333333333333 without rounding. Hope this helped! :)
Explanation:
Volume= 6.0mL Density=Mass/Volume
Mass= 2.9g
D=2.9g/6.0mL
D=0.48333333333333g/mL
<em> or</em>
D≈0.483g/mL