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回覆: 3

2018-04-09 4:31 pm

Can anyone help? Calculate the [s2-] needed to precipitate CU2+ from a solution in which the [CU2+] is 0.0020 M.?

[匿名]

回覆: 2

2018-04-09 10:48 am

at constant volume the temperature of 2.0 atm of gas was 325 K. the temperature is increases to 400 K. What is the new pressure of the gas?

[匿名]

回覆: 1

2018-04-09 9:11 am

A 100 mL solution of .500 M hydrocyanic acid is titrated with a .125 M solution of potassium hydroxide?

[匿名]

回覆: 6

2018-04-08 10:09 pm

Find dy/dx using logarithmic differentiation.?

[匿名]

回覆: 2

2018-04-08 4:16 pm

What would likely happen if you were to touch the flask in which an endothermic reaction were occurring?

[匿名]

回覆: 1

2018-04-06 11:37 am

need help naming asap!!!!!?

[匿名]

回覆: 1

2018-04-07 1:27 pm

How are the melting point and boiling point of water compared to other molecules?

[匿名]

回覆: 1

2018-04-07 8:27 am

Which of the following statements concerning the N2O molecule is/are true? The atoms are bonded in the order NNO.?

[匿名]

回覆: 2

2018-04-07 9:14 am

Chemistry Quiz! 10 points for BA?

[匿名]

回覆: 2

2018-04-06 10:29 am

Use the Henderson–Hasselbalch equation to calculate the pH of each solution:?

[匿名]

回覆: 3

2018-04-06 11:10 am

In Boyle’s Law, can an answer be determined if two values are not stated?

[匿名]

回覆: 3

2018-04-05 11:44 pm

I have another chemistry question?

[匿名]

回覆: 1

2018-04-04 11:33 pm

Chemistry please help!?

[匿名]

回覆: 1

2018-04-04 2:59 pm

what is the mass of hydrogen in a sample of c7h6o3 with mass of 6.84 g?

[匿名]

回覆: 4

2018-04-04 2:31 pm

Find all possible coordinates for S?

[匿名]

回覆: 3

2018-04-04 9:21 am

Is the following redox reaction balanced? Al^3+ + K = Al + K^+?

[匿名]

回覆: 1

2018-04-04 11:39 am

Can anyone help?

[匿名]

回覆: 4

2018-04-04 3:17 am

what is the percentage aluminum in AICI3?

[匿名]

回覆: 2

2018-04-04 2:26 am

CHEMISTRY // Which of the following gases SUPPRESSES combustion?

[匿名]

回覆: 3

2018-04-03 11:31 pm

Consider 4NH3 + 3O2=2N2 +6 H2O.How many mols of NH3 will react with 0.40 mols of O2?How many mols of O2 must react to form 0.40 mols of H20?

[匿名]

回覆: 1

2018-04-03 6:49 pm

Chemistry integrated law equation homework.?

[匿名]

回覆: 8

2018-04-03 3:58 pm

Math Problem Help!?

[匿名]

回覆: 1

2018-03-31 3:31 pm

NEED HELP! Two solutions are mixed: 100.0 mL of HCl(aq) with pH 2.50 and 100.0 mL of NaOH(aq) with pH 11.20.?

[匿名]

回覆: 2

2018-03-31 2:21 pm

A nickel coin (5 cents) contains about 5 grams of nickel. What is the mass of nickel in $ 100. of these coins?

[匿名]

回覆: 1

2018-03-31 12:13 am

chem help!?

[匿名]

回覆: 2

2018-03-30 12:18 am

Calculate the volume that 4.7 kg of ethylene gas (C2H4) will occupy at STP.?

[匿名]

回覆: 1

2018-03-29 12:34 am

A gas has a pressure of 7.50 kPa at 420 K. What will the pressure be at 210 K if the volume of the vessell is 2.5 L?

[匿名]

回覆: 4

2018-03-28 4:03 pm

what type of reagent required to convert so^2 to s?

[匿名]

回覆: 2

2018-03-28 12:19 am

Chemistry Problem?

[匿名]

回覆: 1

2018-03-28 12:31 am

Adding a Strong Acid to a Buffer?

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回覆: 3

2018-03-23 1:47 pm

Reactive Distillation – combining Chemical Reaction and Distillation process?

[匿名]

回覆: 2

2018-03-23 10:16 am

What is the maximum amount in moles of P2O5 that can theoretically be made from 186 g of P4 and excess oxygen?

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回覆: 2

2018-03-23 9:13 am

What s the molar mass of H2O?

[匿名]

回覆: 3

2018-03-22 4:44 pm

prove of sinA*sinA + sin(A+60)sin(A+60) +sin(A-60)sin(A-60)=3/2?

[匿名]

回覆: 1

2018-03-22 4:48 pm

Enthalpy change___chemistry?

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回覆: 3

2018-03-22 12:59 pm

Help to simplify rational expressions?

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回覆: 1

2018-03-22 12:09 am

Given the reaction 2Mg + O2 = 2MgO, if you have 2 moles of both materials how much MgO would be produced?

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回覆: 2

2018-03-21 7:58 am

Determine if each of the following forms an unsaturated or saturated solution at 20c?

[匿名]

回覆: 2

2018-03-20 10:52 pm

CHEMISTRY HELP PLEASE!!! A 340.0 −mL buffer solution is 0.170 M in HF and 0.170 M in NaF.?

[匿名]

回覆: 1

2018-03-20 9:36 pm

Organic Chemistry Question: In this picture, how many types of functional groups are present?

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回覆: 1

2018-03-20 9:47 am

If a small weather balloon with a V of 50.0 L at a pressure of 1.00 atmosphere , what was the V of the balloon when it reached the center?

[匿名]

回覆: 2

2018-03-20 10:53 am

How would you synthesize 2-methylbutanoic acid from butanoic acid using reagents from the table?

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回覆: 2

2018-03-20 2:45 pm

What mass of water is in a 0.430 m solution containing 2.58 g of CH3OH?

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回覆: 1

2018-03-19 9:37 pm

How do glacial acetate acid, benzoic acid, and stearic acid soluble in ether?

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回覆: 3

2018-03-19 9:52 pm

Consider the equation 2NO2(g) <--> N2O4(g).?

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回覆: 16

2018-03-19 8:40 pm

A certain factory employs 60 workers . if 4 out of every 5 workers are married, how many married workers are employed by the factory?

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回覆: 2

2018-03-19 9:45 am

Chemistry percent yield?

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回覆: 1

2018-03-19 1:58 pm

Molar solubility!! chemistry?

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回覆: 1

2018-03-18 12:42 pm

Assume that the only reducing agent present in a particular wastewater is SO2−3. 5SO2−3(aq)+2MnO−4(aq)+6H+(aq)→5SO24−(aq)+2Mn+2(aq)+3H2O(l)?

[匿名]

回覆: 2

2018-03-17 6:31 pm

If two bodies, one lighter than the other have the same Kinetic Energy. Which one will have greater Momentum?