Н N Н N.

45. | You find that if you hang a 1.25 kg weight from a vertical spring, it stretches 3.75 cm. (a) What is the force constant of this spring in N/m? (b) How much mass should you hang from the spring so it will stretch by 8.13 cm from its original, unstretched length?

3. N NaOMe, MeOH DMSO, 100°C

Pls help ASAP. Pls give proper units and significant digits to three. Pls circle the final answer as well.

KXI What is the reaction of the following reaction? 1. Hg(OAc)₂, H₂O x 2. NaBH4, NaOH OH OH x OH

7 kOH etand

Every year Every second (1 year 365 days).

N2H4(1) --> NH3(g)+N2(g) Express your answers as inetegers seperated by commas

Select the major product(s) for the following reaction. О I,.. HO H I,, 1) BH3-THF 2) H2O2, NaOH HO H + + H OH L, H н он 21 22

Mixtures are created by physical means (mixing a substance with another; no chemical bonding); if so, can they be separated only by physical means?