A. ill: Short Answer - Answer the following in the spaces provided.
34. Balance the chemical equations by placing coefficients in the spaces provided.
+ 3H2s
-5 b. CH_Cle+
+ A/3 KBr C#
H26. Na .H₂
CO2
d. Cz Na Ny Br2 →
N₂
NaBr
CHAIS
N2 Alto
C.
Als CsH12 +
КСІ
+ 2NH43 Br2
H2O +
e.
CHŁcusos +H5 NaOH => HOz_ Cu(OH)2 + P& H Nas
35. List the 7 diatomic molecules.
CH2O2, HO2, N2, Hs
Extr

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

How many moles of na2s2o3 are needed to react with 0.12mol of cl2? show work.

Which of these statements describes the size of an atom? a. an atom is larger than a sheet of aluminum foil. b. an atom is small but can be seen with just our eyes. c. an atom is the size of a plastic building block. d. an atom is tiny and cannot be seen without magnification.