What is the name of the opposite stereoisomer of the molecule shown below?
A. cis-2-butene
B. 2-methylpropene
O C. 1-butene
O D. trans-2-butene

Achemist who studies water samples did a demonstration of how to test for lead in water. she added a clear solution of potassium iodide to a clear solution of lead nitrate. then a yellow swirling solid formed in the liquid. what is most likely true about the yellow solid?

How to balance an unbalanced equation

The total momentum of two marbles before a collision is 0.06 kg-m/s. no outside force act on the marbles. what is the total momentum of the marbles after collision