Roger the Mole

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回覆: 2

2016-06-20 11:08 pm

I NEED SO MUCH HELP WITH CHEMISTRY!?

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回覆: 3

2016-06-20 10:52 pm

The volume of the NaOH(aq) solution is expressed to what number of significant figures?

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回覆: 3

2016-06-20 8:16 pm

Is CCl4 a lewis acid or a base?? WHY?

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回覆: 2

2016-06-20 6:38 pm

What is the molar mass of 0.500 g of unknown monos optic acid if 22.5 mL of 0.15 M NaOH solution was required to neutralize it?

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回覆: 2

2016-06-18 7:29 pm

An electrolytic cell is made of an aqueous solution of CuSO4. If a current of 3.44 A is used in the cell?

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回覆: 2

2016-06-14 3:25 am

Explain how the addition of carbon affects iron's malleability?

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回覆: 2

2016-06-12 9:48 pm

Electro chemistry help!?

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回覆: 2

2016-06-12 6:16 pm

help with finding what is oxidized and reduced in these formulas?

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回覆: 2

2016-06-12 3:59 pm

A precipitate is expected when an aqueous solution of rubidium iodide is added to an aqueous solution of?

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回覆: 1

2016-06-08 2:36 am

calculate the molar mass of each of the following A) 2 mole of nitrogen B)3 mole of water C)4 mole of hydrogen chloride D)5 mole of water?

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回覆: 1

2016-06-08 2:33 am

Calculate the number of moles of molecule in the following A) 32 g of oxygen B)7 g of nitrogen C) 8 of hydrogen Thank you in advance!!?

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回覆: 1

2016-06-07 2:27 am

How many moles are there in 2. 8 grams of ethene?? urgent plz hepl!!?

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回覆: 1

2016-06-06 9:20 pm

An example of a pure substance is A. elements B. carbon dioxide C. pure water D. all of these E. compounds?

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回覆: 3

2016-06-06 8:49 pm

Magnesium + ................ → Magnesium chloride + ...................?

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回覆: 2

2016-06-02 11:19 pm

How many particles are in 12 grams of H2 gas?

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回覆: 2

2016-05-30 10:00 pm

MY REVIEW FOR FINAL :(( Calculate the mass of copper produced during this reaction.?

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回覆: 2

2016-05-30 9:35 pm

According to the following reaction, how many grams of sodium iodide are necessary to form 0.356 moles sodium chloride?

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回覆: 3

2016-05-30 8:50 pm

Can someone please help me with chemistry?

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回覆: 1

2016-05-05 9:54 pm

Chemistry help?

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回覆: 1

2016-04-25 7:36 pm

what mass of hydrogen is formed?

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回覆: 1

2016-04-30 3:48 pm

Chemistry help please !?

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回覆: 3

2016-04-29 3:19 am

Calculate the density, in grams per liter, of a gas at STP if 4.90 L of the gas at 26.3 °C and 701.5 mm Hg weighs 0.316 g.?

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回覆: 3

2016-04-18 3:34 am

What would be the yield if I were to use 6mg of styrene to prepare polystyrene?

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2016-04-18 1:03 am

What is the yield percentage of 6mL of styrene and 0.05g benzoyl peroxie?

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回覆: 2

2016-04-17 10:59 pm

How much benzoyl peroxide should you use, along with styrene to make polystyrene?

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回覆: 1

2016-04-17 9:53 pm

What is the yield of reaction if I were to use 6mg of styrene to make polystyrene?

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2016-04-10 3:17 am

0.125 of impure magnesium is heated in the air until there is no weight change. 0.2g of mgO is obtained. Calculate percentage yield?

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回覆: 1

2016-03-27 12:14 am

Freezing point depression explantaion?

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回覆: 1

2016-03-19 6:35 pm

what is the compound for Iodine -123?

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回覆: 1

2016-03-11 6:17 pm

Why can't sodium displace ammonium ions in aqueos ammonium chloride?

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2016-03-04 11:49 pm

What is the percent mass of calcium in a calcium supplement if 1.27-g of calcium carbonate is extracted from a 2.44-g pill?

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回覆: 1

2016-03-04 11:47 pm

Help Please How many milligrams of calcium is in 1.39-g of calcium carbonate? thanks?

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回覆: 652

2016-02-29 7:04 am

Leonardo DiCaprio finally won an fvcking Oscar :D!.... What are your thoughts about this!?

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回覆: 2

2016-02-29 7:02 pm

If you combine 340mL of water at 25.00 degree C and 130.0 mL of water at 95 degree C, what is the final temperature of the mixture?

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回覆: 2

2016-02-27 5:26 am

What is the percent by mass of an aqueous solution that is 1.5m ammonium sulfate?

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回覆: 3

2016-02-21 1:04 pm

How to balance a redox reaction equation if there is already a coffient in the equation?

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回覆: 1

2016-02-19 10:33 pm

Evaluating Polynomials?

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2016-02-08 2:41 am

How much heat, in joules and in calories, must be removed from 3.42 mol of water to lower its temperature from 25.2 to 10.9°C?

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回覆: 2

2016-02-08 12:24 am

Write the overall reaction for the synthesis of KAl(SO4)2⋅12H2O from Al, KOH, and H2SO4.?

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回覆: 1

2016-02-07 6:11 pm

Why dont we breathe out much carbon dioxide but quite a bit of oxygen?

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2016-02-07 4:20 pm

DIFFICULT chem question?

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2016-01-31 1:21 am

Which set up will facilitate diffusion faster?

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2016-01-27 9:11 pm

Explain how the ions become molecules at the electrodes?

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2016-01-26 5:13 pm

To protect your car from freezing to -20 degree C. how do you make C2H6O2 aqueous solition ?

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回覆: 1

2016-01-23 8:19 am

How is matter conserved in a chemical reaction?

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2016-01-22 7:21 pm

how can you balance a chemical reaction? 1.Change the coefficients 2.Change the products 3.Change the reactants 4.Change the subscripts?

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回覆: 2

2016-01-22 7:15 pm

how does the energy of the products compare with the energy of the reactants?

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2016-01-17 10:33 pm

Chemistry help? density/mass questions?

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2016-01-11 5:09 am

A gas is 65.8 L at 129 kPa. What volume would the gas be at 76.2 kPa?

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回覆: 5

2016-01-06 7:56 pm

What chemicals make up iodine?