Which elements on the periodic table fulfill the octet rule

Two beakers are placed in a closed container. Beaker A initially contains 0.15 mole of naphthalene (C10H8) in 100 g of benzene (C6H6), and beaker B initially contains 31 g of an unknown compound dissolved in 100 g of benzene.

How does the law of conservation of matter apply to chemical equations? A. The sum of the coefficients on each side of the equation must be the same. B. The sum of the atomic masses on both sides of the equation must be the same. C.

Which temperature represents absolute zero

a 1.750-g sample of mercury metal ws combined with 1.394 g of bromine. Determine the empirical formula of the mercury bromide that is produced

A base A. has a low pH in solution. B. turns red litmus paper to blue. C. releases hydrogen ions in solution. D. has more hydrogen (or hydronium) than hydrogen ions.

Which force acts an an object to move it from rest or a constant, straight-line motion? A-balanced B-unbalanced C-inertial D-along a straight line

When preparing a buret for use in lab, the buret must always be cleaned thoroughly. prior to being filled with solution, the buret is rinsed one last time. what is the buret rinsed with, and why?

Determine the mechanical energy of this object: a 1kg ball sits on a 10 meter high cliff a. 980j b. the ball isn't moving. so the mechanical energy is zero c. 98j d. 10j

Which are examples of acids? Check all that apply. A. Vinegar B. Drain cleaner C. Lemon juice D. Bleach

1. True or False: Nitrogen bases form the sides of the DNA ladder 2. True or False: Translation is the process of making a protein from RNA