HEL PLZ A student pushes a 40-N block across the floor for a distance of 10 m.

How much work was done to move the block?

400 Pascals

400 Newtons

400 Joules

400 Watts

400 Joules

Work done is measured in Joules (J) remember that

400 joules

wut do u need

Explanation:

the answer is option a.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.