Roger the Mole

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回覆: 3

2017-11-29 3:38 pm

chemistry redox reaction help?

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回覆: 2

2017-11-29 1:53 pm

Chem Question (Atoms to Moles)?

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回覆: 2

2017-11-27 7:04 am

How long would it take (min) for argon-44 to decrease from 96.0 to 12.0mg? Ar-44 Pb-196 K-44 Indium-117?

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回覆: 2

2017-11-10 8:55 am

If 6.79 g of aluminum were reacted with excess sulfuric acid to produce 37.86 g of aluminum sulfate, what is the percent yield?

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回覆: 1

2017-11-07 7:39 am

Chemistry question (see details)?

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回覆: 2

2017-11-06 1:22 pm

Considering the limiting reactant concept, how many moles of A3B2 are produced from the reaction of 5.0 mol A and 4.00 mol B?

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回覆: 2

2017-11-06 12:07 pm

whats is the mass of potassium iodide (166.00g/mol) that yields 0.500 g of lead (II) iodide (461.0g/mol) precipitate?

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回覆: 4

2017-10-31 9:44 pm

are neutron stars made of element zero?

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回覆: 2

2017-10-31 1:28 am

3.00×10−3 mol of HBr are dissolved in water to make 16.0 L of solution.What is the concentration of hydroxide ions, [OH−] in this solution?

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回覆: 2

2017-10-25 9:56 am

Calculate the mass of CaCl2 * 2H2O needed to prepare a solution that contains .001 mol CaCl2.?

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回覆: 2

2017-10-25 10:32 am

What is the net ionic equation for Al(OH)3 + HCl?

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回覆: 3

2017-10-25 9:58 am

Which of these compounds have the same empirical formula?

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回覆: 2

2017-10-22 11:30 pm

Chemistry question, please help?

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回覆: 2

2017-10-20 11:29 am

Chemistry, please help! I keep getting the wrong answer! Due at midnight?

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回覆: 2

2017-10-18 9:37 am

empirical and molecular formulas?

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回覆: 1

2017-10-18 8:36 am

Help determine its empirical and molecular formulas.?

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回覆: 2

2017-10-18 8:07 am

chemistry problem help?

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回覆: 2

2017-10-16 7:12 am

When 24.0 mL of 0.500 M H2SO4 is added to 24.0 mL of 1.00 M KOH?

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回覆: 1

2017-10-14 5:44 am

How many grams of Cu(OH)2 will precipitate when excess NaOH solution is added to 64.0 mL of 0.596 M CuBr2 solution?

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回覆: 2

2017-10-14 5:02 am

Consider the reaction when aqueous solutions of barium bromide and aluminum sulfate are combined?

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回覆: 1

2017-10-14 4:45 am

Consider the reaction when aqueous solutions of sodium hydroxide and aluminum chloride are combined.?

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2017-10-14 2:56 am

Write the net ionic equation for the precipitation of calcium carbonate from aqueous solution?

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回覆: 3

2017-10-13 11:58 pm

A sample of 5.50 g of Mg(OH)2 is added to 25.4 mL of 0.150 M HNO3. 1)Write the chemical equation for the reaction that occurs.?

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回覆: 21

2017-10-11 12:42 pm

All water is liquid, but are all liquids water?

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回覆: 2

2017-10-06 9:47 pm

A water sample is suspected to be contaminated by PO4 ions. How could you know if the sample is really contaminated?

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回覆: 2

2017-10-04 11:57 pm

Chemistry question!?

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回覆: 2

2017-10-03 11:19 pm

What is the IUPAC name for Acetaminophen?

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回覆: 2

2017-10-03 7:40 am

How do you name this alkene?

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回覆: 2

2017-10-02 7:44 pm

What are the oxidation states of the atoms that are in bold (and underlined!) in the following species/compounds?

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回覆: 2

2017-10-02 10:38 am

Why Cu+2 in activity series and not Cu+1?

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回覆: 3

2017-09-30 11:33 am

19 mLs of neutralizer to neutralize 100 mLs of acid lake water, if we needed to neutralize 50 liters of drinking water, how many grams ?

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回覆: 1

2017-09-30 5:38 am

According to the following unbalanced reaction, how many grams of water will be formed upon the complete reaction of 27.5 grams?

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2017-09-30 4:10 am

A 7.005 gram sample of an organic compound containing C, H, and O is analyzed by combustion analysis?

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回覆: 2

2017-09-30 1:12 am

Calculate the maximum mass of iron that could be collected at the end of this experiment?

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回覆: 2

2017-09-27 9:38 am

Chemistry help?

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2017-09-27 2:58 am

Chemistry?

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2017-09-17 3:55 am

Diamond has a density of 3.26 g/cm3. What is the mass of a diamond that has a volume of 0.206 cm3?

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回覆: 2

2017-09-15 11:25 pm

How many moles of KF can be produced when 2.67 mol K reacts with 9.01 mol F2?

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回覆: 2

2017-09-13 10:20 am

How many O2 molecules are needed to react with 7.06 g of S? Express your answer numerically in units of molecules.?

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回覆: 2

2017-09-13 9:48 am

Help please?

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回覆: 3

2017-09-12 3:08 pm

what is a mixture of water containing undissolved particles that are so small that they will not settle out of solution?

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回覆: 2

2017-08-31 1:18 am

Write the chemical symbols for three different atomic cations that all have 5 protons.?

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回覆: 3

2017-08-18 10:28 pm

Chemistry question - Normality?

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回覆: 3

2017-08-18 10:14 am

Basic Enthalpy problem, need help ASAP!?

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回覆: 3

2017-08-16 11:54 pm

What is molaritiy of the soiution prepared by dissolving 75.5 g of pure KHO in 540 ml of solution?

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回覆: 2

2017-06-12 2:55 am

What is this plant? I was admired by it when I was little. Years later, I saw it on FarCry 4 (A PC game) I've tried Google, but couldn't id?

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回覆: 1

2017-05-25 11:41 pm

How to calculate concentration and mass percent?

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2017-05-24 5:01 am

If a metal disc is heated.What properties of it will change? Volume,Mass,Density Radius,Length,Width Etc.?

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2017-05-16 12:12 pm

Which of the following is a property of sodium hydroxide?

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回覆: 3

2017-05-16 5:58 am

A sample of nitrogen gas has 2.68 x 10^22 molecules measured at 87.0 degrees C and 0.620 atm. What is it's volume?