Which of the following signs on q and w represent a system that is doing work on the surroundings, as well as losing heat to the surroundings?

a) q = - , w = -
b) q = +, w = +
c) q = -, w = +
d) q = +, w = -
e) none of these represent the system referenced above.

c

Explanation:

In Physics we follow the sign convention i.e. work done by the system is considered as positive i.e. work is being done by system on the surrounding and vice-versa.

For heat :Heat added to the system is considered as Positive while heat loss to surrounding is considered as negative.

thus doing work on the surrounding(work done by system) w=+

Losing heat to the surrounding q=-

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic