Carbon has 4 valence electrons. Hydrogen has 1 valence electron. How many hydrogen atoms would form chemical
bond(s) with one carbon atom?
a 1
b 2
C 4
?
d 8.

Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)

Orque can be calculated by multiplying the force (n) applied at 90∘ to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n⋅m. if the force (at 90∘ to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

If you held a stone over the mouth of a well and then let it go , what would happen to the stone? explain your answer.