Author: Anonymous

Balance the following equation for the combustion of benzene: C6H6(l) + O2(g) → H2O(g) + CO2(g) What coefficient was placed in front of carbon dioxide?

How many centimeters are there in 57.0 in? (1in = 2.54 cm)

That whales have pelvic bones is taken as evidence that A) they probably evolved from fish. B) ancestral whales had legs. C) whales should have legs. D) having a pelvis is advantageous. E) whales did not evolve by natural selection

How many moles of NaCl are in 135 g NaCl?

A compound containing only carbon, hydrogen, and oxygen is subjected to elemental analysis.  Upon complete combustion, a 0.7916-g sample of the compound produced 1.581 g of CO2 and 0.6474 g of H2O.  What is the empirical formula of a compound?

Matter is everything that has [1] and occupy [2]. 

What is true of natural selection? A) Natural selection is a random process. B) Natural selection creates beneficial mutations. C) The only way to eliminate harmful mutations is through natural selection. D) Mutations occur at random; natural selection can preserve and distribute beneficial mutations. E) Mutations occur when directed by the good of the species; natural selection edits out harmful mutations and causes populations to adapt to the beneficial mutations.

What coefficient has to be placed in front of H2O to correctly balance following equation? Remember that entire equation has to be balanced. B2O3(s) + HF(l) → BF3(g) + H2O(l)

What is the mass in grams of one molecule of propene, C3H6?

Which of the following is the lowest temperature? TK = TC + 273 TF = (1.8 x TC) + 32 TC = (TF – 32) / 1.8