What is the common trade name of the polymer polytetrafluoroethylene? for what is it commonly used?

Common trade name of polytetrafluoroethylene is Teflon

Many uses are there some of them are given in explanation.

Explanation:

Common trade name of polytetrafluoroethylene is Teflon.

Main uses of polytetrafluoroethylene:

1) To coat non stick pans

2) Used as ski bindings

3)  Used as fabric protector to repel stains on formal school-wear

4) Used to make to make a waterproof, breathable fabric in outdoor apparel.

car a and b are moving in opposite directions

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answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.