Which of the following statements is (are) true about a compound that has a molecular ion in its mass spectrum at mass 94, and shows prominent peaks in its IR spectrum at 3600-3200 and 1600 cm? A. The compound has a molecular weight of 94.
B. The compound contains aO group ad sp hybridized C-H bonds.
C. The compound contains an OH group and sp2 hybridized C-H bonds.
D. Both (The compound has a molecular weight of 94) and (The compound contains a COgroup and sp3 hybridized C-H bonds) are true statements.
E. Both (The compound has a molecular weight of 94) and (The compound contains an OH group and sp2 hybridized C-H bonds) are true statements.

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

the answer is 75.0%.

the answer is 0.42 is that is an option. this question provides no info