戇戇居士

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回覆: 2

2017-11-21 1:03 pm

what is the reaction of carbon and oxygen?

[匿名]

回覆: 1

2017-11-21 11:52 am

What is the entire reaction mechanism for 1-butanol with ammonium bromide in the presence of sulfuric acid?

[匿名]

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2017-11-21 10:58 am

At an underwater depth of 255 ft , the pressure is 8.39 atm .?

[匿名]

回覆: 3

2017-11-21 10:40 am

Acidity of phenol and aminophenol?

[匿名]

回覆: 1

2017-11-21 9:58 am

Calculate the average rate of the following reaction in g of Cu/second.?

[匿名]

回覆: 1

2017-11-20 3:18 pm

N2O5 + Oh?

[匿名]

回覆: 2

2017-11-20 3:48 pm

I need homework help!?

[匿名]

回覆: 1

2017-11-19 8:35 pm

Calculating Ionization Energy?

[匿名]

回覆: 1

2017-11-20 12:08 am

Is Benzene rigid? Is there much flexibility to it? I thought no when I built the model but some people are saying it is rigid?

[匿名]

回覆: 2

2017-11-19 9:43 pm

outline the mechanism for the reaction between propene and conc.H2 SO4?

[匿名]

回覆: 2

2017-11-18 5:20 pm

pH of Solution. Help Chemistry?

[匿名]

回覆: 2

2017-11-18 3:02 pm

Chemical equation: A+B2→AB2 How many moles of product can be made from 0.70 mol of A and 1.0 mol of B2?

[匿名]

回覆: 1

2017-11-17 11:26 pm

im confused? i think its sp but im not sure?

[匿名]

回覆: 1

2017-11-18 12:12 am

A solution has [H+] = 1.0 x 10-10 M. The pOH of this solution is __________.?

[匿名]

回覆: 1

2017-11-17 11:52 pm

For the following chemical reaction: C6H12O2+6 O2—> 6 CO2 +6 H2O +energy what substances are oxidized and what ones are reduced.. HELP?

[匿名]

回覆: 2

2017-11-17 9:31 pm

4 diff gases added in container. the pressure of the 4 gases each is 1.5 atm,912 mmHg,14 torr, and 0.87 atm. what is the resulting pressure?

[匿名]

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2017-11-17 9:21 am

What is the pOH of a solution that has a hydroxide ion concentration of a 0.01 M HCl solution?

[匿名]

回覆: 1

2017-11-17 8:21 am

Ca+N-->Ca3N2 -What is limiting reagent? -Mass of calcium nitride formed when 50.0g of calcium reacts with 50.0g of Nitrogen? -Excess?

[匿名]

回覆: 3

2017-11-16 3:52 pm

A hydrocarbon, C4H6 absorbs two moles of hydrogen in the presence of platinum as catalyst.?

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2017-11-15 11:40 pm

A 7.0 g sample of a hydrocarbon is subject to combustion analysis. The mass of CO2 collected is 22.0 g.?

[匿名]

回覆: 2

2017-11-15 11:46 pm

Chemistry Acid/Base Reaction Help?

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回覆: 1

2017-11-16 12:06 am

Help me solve this problem...?

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回覆: 2

2017-11-12 8:32 pm

What product forms from butylamine and cyclohexanone in the presence of a reducing agent?

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2017-11-13 12:48 am

Arrange the following electrophiles in order of increasing reactivity for an Sn1 reaction...?

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回覆: 2

2017-11-12 9:48 pm

How many grams of phosphorus (P4) are needed to completely consume 40.5 L of chlorine gas according to the following reaction at 25 °C and?

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回覆: 2

2017-11-11 12:21 am

Oxygen gas is commonly sold in 46.5 L steel containers at a pressure of 130 atm.?

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回覆: 1

2017-11-11 12:36 am

Molarity help?

[匿名]

回覆: 4

2017-11-10 7:14 pm

Expand (1+X+2X^2)^6 as far as the term x^3?

[匿名]

回覆: 3

2017-11-10 11:43 am

What is the net ionic equation, including phases, for the reaction of AgNO3(aq) with K2SO4(aq).?

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回覆: 1

2017-11-10 12:22 pm

ZnO+HCl ---> ?

[匿名]

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2017-11-10 12:58 pm

Chemistry ASAP?

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回覆: 2

2017-11-10 1:01 pm

Identify the solvent and solute in each solution.?

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2017-11-10 5:01 pm

An atomic cation with a charge of +1 has the following electron configuration: 1s22s22p6?

[匿名]

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2017-11-10 2:25 pm

what volume of 0.400 mol/L solution may be prepared from 83.0g of solid KI?

[匿名]

回覆: 2

2017-11-10 9:40 am

using P4(g) + 6Cl2(g) → 4PCl3(g) determine what bonds are broken and what bonds are formed.?

[匿名]

回覆: 1

2017-11-09 3:46 pm

what is the balanced symbol equation for... calcium + nitric acid = calcium nitrate + hydrogen?

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回覆: 1

2017-11-09 1:09 am

Help with Chemistry question!!?

[匿名]

回覆: 1

2017-11-08 11:57 am

If you add 25ml chemical to 50ml H2O, pour out 25ml of the solution, then another 25ml of the chemical, what's the ratio of chemical to H2O?

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回覆: 1

2017-11-08 1:12 pm

Oxidation numbers and electron process?

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2017-11-07 2:03 pm

How many liters of N2 are produced at STP?

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回覆: 1

2017-11-07 10:45 pm

Chemistry help?

[匿名]

回覆: 1

2017-11-07 11:21 am

What is the major product for this organic reaction? Please help, i keep getting it wrong!?

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2017-11-07 9:44 am

Calculate the standard enthalpy of formation of NO(g) (in kJ/mol) from the following data.?

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2017-11-06 10:51 am

If you start with 390 grams of Al2(SO3)3 , how many grams of Na2SO3 would be produced?

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回覆: 1

2017-11-06 3:09 pm

Sample of gas has a mass of 0.545 g. Its volume is 113 mL at a temperature of 75 ∘C and a pressure of 751 mmHgFind the molar mass of the gas?

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2017-11-06 6:13 pm

at what temprature the root mean square velocity of a molecule of gas will be double of the value at 0 celcius?

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回覆: 1

2017-11-06 1:17 pm

Need help with chem. thanx :)?

[匿名]

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: 1

2017-11-06 10:36 am

Oxidation Numbers?

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回覆: 1

2017-11-05 9:47 pm

IB Chemistry 1998 HL Question?