Chemistry
Favorites|Homepage
Subscriptions | sitemap
HOME > Chemistry > Chemistry

Chemistry

Percent Yield (General Chemistry)

Calculate the percent yield of NaCl if 1.763 g of NaCl are produced from the reaction of 2.653 g of Na2CO3 with 125 mL of 0.317M HCl according to the following reaction.The M stands for Molarity. Na2

A hydrogen bond is...

A) an ionic bond between H and another atom B) a bond that is stronger than a covalent bond C) the polar O-H bond in water D) an attraction between a hydrogen atom attached to N, O, or F and an N, O,

Chemistry homework the ratio of the average mass of atoms

i have to find the ratio of the average of one atom of tin: average mass of one atom of carbon the average mass of one carbon atom is 2.07 x10^23 the average mass of tin is 1.58x10^-22 it also asks

Can the elements mercury and silver be destroyed

Im not a fan of chemistry but out of pure curiosity I want to know if the elements mercury and silver can be destroyed permanently?-By chemical means, certainly not. By applying nuclear radiation you

I need help with molarity problem

35.53g of Manganese sulphate tetrahydrate were dissolved in 250.0 mL of water. What was the molarity of the solution? If you were to take a 25.00mL sample of the solution, how many manganese ions woul

What is the solubility of PbCl2

What is the solubility of PbCl2 in a 0.075M solution of CaCl2?-Answer: 7.6x10^-4 M Explanation:You need to know the Ksp of PbCl2, which should be a pretty small number since chlorides of lead arent v

(Easy 10 points) How much energy is transferred when 23.3 g of iron reacts to form Fe2O3

Heres the full question from a practice set: 3MgO(s) + 2Fe(s)Fe2O3(s) + 3Mg(s) H°rxn = 980.9 kJ How much energy is transferred when 23.3 g of iron reacts to form Fe2O3? a. 409 kJb. 22,900 kJc. 643 k

Is it the NFPA or HMIS that has the diamond symbol

They both have the same rating system (health, fire, reactivity, special) which does the diamond represent?-NFPA

Maximum concentration

Determine the maximum concentration of cation if the concentration of the anion is 1.0*10^-4M magnesium hydroxide. Not sure how to really approach this.. Any help is appreciated. Thanks:)-its a solub

Which ester is formed from propanoic acid and isopropyl alcohol by hydrolysis reaction with water

Propionate (or propanoate) ---> CH3-CH2-COO(-)-Im not sure if Im understanding your question correctly because you are asking for which ester that is formed from a carboxylic acid (propanoic acid) and

Solubility of Manganese(II) Sulfide

Consider the dissolution of MnS in water (Ksp = 3.0*10^-14) MnS + H2O ----> Mn^2+ = HS- + OH- How is the solubility of manganese(II) sulfide affected by the addition of aqueous 6M ammonia to the syst

A log contains 60% of the 14C present in a tree how long has log been dead, half life of 14C is 5730 yrs

a) 7560 yrs b) 4220 yrs c)3430 yrs d) 2290 yrs-Hello exponentiell decline is described by N = N0*0.5^t/(t/2) with t/2 = half life 60 = 100*0.5^(t/5730) with t = time in years 0.6 = 0.5^(t/5730) log

How to find the average mass of one atom

how can i find the average mass of one carbon atom in grams, it is not in my text book on how to do this, i am given on previous questions 0.08 mols of carbon and 1.00 g, i had to calculate the number

How many grams of Ca(OH)2 are needed to neutralize 5 g of 3-methylbutanoic acid

a- 1.81 g b- 3.68g c- 2.10g d- 4.20g-3-methylbutanoic acid has one carboxyl group, so each mole of Ca(OH)2 will neutralize two moles of 3-methylbutanoic acid. The formula for 3-methylbutanoic acid is

Name product obtained from addition of bromine to 3-methyl-1-butene.

a) 1,2-dibromopentane b) trans-1,2-dibromobutene c) 1,2-dibromo-3-methylbutane d) 1,1-dibromobutane-C. 1, 2-dibromo-3-methylbutane
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .