A 4.50 g nugget of pure gold absorbed 276 J of heat. the initial temperature was 25.0 degrees C. what was the final temperature?

500.45° C is the final temperature when a 4.50 g nugget of pure gold absorbed 276 J of heat. The initial temperature was 25.0 degrees C.

Explanation:

Data given:

q = 276 J/ grams °C (Heat absorbed)

m = 4.50 grams or

c = 0.129 joules

initial temperature  = 25 °C

Final temperature = ?

From the equation

q = m (ΔT) C  

change in temperature =

Putting the values in above simplified equation:

change in temperature =

    = 475.45 ° C.

To calculate final temperature following equation is used:

( change in temperature = final temperature- initial temperature)

475.45 + 25 = final temperature

500.45 = final temperature

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.