胡雪8°

[匿名]

回覆: 2

2018-09-05 12:16 pm

For each solution, identify the ions that exist in aqueous solution & specify the concentration of each.?

[匿名]

回覆: 1

2018-08-24 7:18 am

Please Help?

[匿名]

回覆: 1

2018-08-24 7:20 am

Please Help?

[匿名]

回覆: 6

2018-08-24 8:22 am

Two balls are drawn simultaneously at random; 6 red, 4 white & 5 blues. What is P(one is white and one is red)?

[匿名]

回覆: 4

2018-08-21 4:47 pm

Is my answer correct to this math problem? Solve in x^n form. (2^-10/4^2)^7?

[匿名]

回覆: 1

2018-08-21 8:34 am

What geometries for the complex ion [Co(en)(H2O)4]2+ are possible?

[匿名]

回覆: 3

2018-08-10 4:33 pm

A net force of 1,800 N is applied to a boat causing it to accelerate at 1.5 m/s^2. What is the mass of the boat?

[匿名]

回覆: 3

2018-08-01 7:23 am

Chemistry Help?????

[匿名]

回覆: 2

2018-07-31 11:46 pm

chemistry help please how do I do this?

[匿名]

回覆: 1

2018-07-31 10:47 pm

chemistry help please?

[匿名]

回覆: 5

2018-07-31 9:51 pm

Are clouds affected with direction that wind blows?

[匿名]

回覆: 1

2018-07-31 8:59 pm

What is the principle involved in extraction of chlorophyll by ethyl alcohol? Thanks a lot 💙?

[匿名]

回覆: 3

2018-07-31 5:39 pm

solve the equation cos x = -0.5 for 0*(deg) <x<360*(deg)?

[匿名]

回覆: 7

2018-07-31 3:26 pm

the question is share 171 in the ratio 3:7:9?

[匿名]

回覆: 1

2018-07-31 10:56 am

A 2.0 g sample of washing soda, Na2CO3 , 10 H2O has 2.4 x 10^21 carbon atoms. how many oxygen atoms are present in 2.0 g of washing soda?

[匿名]

回覆: 4

2018-07-31 12:22 am

Na3PO4+HCl->NaCl+H3PO4?

[匿名]

回覆: 5

2018-07-30 2:59 pm

Find the eqn of tangents from origin to the circle x²+y²-6x+2=0?

[匿名]

回覆: 2

2018-07-28 8:06 am

What is the molar concentration of the solution? How many moles of solute are in the solution?What is the molar mass of the solute?

Tsz Ching

回覆: 3

2018-07-27 4:04 pm

1.三角形三角比為3：4：5，求三角分別的度數?

[匿名]

回覆: 1

2018-07-27 8:45 pm

請教,硫酸銅0.7x10負6 濃度,是每公升水要加幾克呢?謝謝?

[匿名]

回覆: 1

2018-07-27 1:03 pm

What is the product when Strontium reacts with Oxygen gas? Strontium Peroxide or Strontium Oxide? Please explain why.?

[匿名]

回覆: 1

2018-07-27 12:40 pm

In desperate need of Chemistry Help?

[匿名]

回覆: 2

2018-07-25 3:31 pm

Is there an ambigram for the derivative and integral of e^x?

[匿名]

回覆: 1

2018-07-25 2:38 pm

Equilibrium help? I just need to understand how to do this!?

[匿名]

回覆: 1

2018-07-25 11:58 am

Finding Equilibrium Constant...Keq=?

[匿名]

回覆: 1

2018-07-25 11:04 am

You are given 410.0 mL of a 1.581 M K2CO3 solution. There are ______ moles of K+ present in the solution?

[匿名]

回覆: 4

2018-07-25 9:04 am

Determine which property is demonstrated below: <UZR+<IZM=<RZU+<MZI?

[匿名]

回覆: 3

2018-07-25 9:15 am

If p is a whole number, for what values of p is 10 x 2^p-1 < 165 with working pls?

[匿名]

回覆: 1

2018-07-25 9:49 am

How many moles of Ba(OH)2 are in 2400 grams of Ba(OH)2?

[匿名]

回覆: 2

2018-07-25 8:51 am

Geometry help!!!?

[匿名]

回覆: 4

2018-07-25 7:55 am

Math question(s) below?

[匿名]

回覆: 2

2018-07-18 2:53 pm

If 2x atoms of element M have a mass of 34.5g and 3x atoms of element N have a mass of 228.6 g, what is the relative atomic mass of M?

[匿名]

回覆: 1

2018-07-17 1:14 pm

An acid and its cpnjugate base pair for the reaction: H3BO3 + H2O -> H3O+ + H2BO3- is. Show work?

[匿名]

回覆: 1

2018-07-16 2:54 pm

Help with physics?

[匿名]

回覆: 1

2018-07-16 2:13 pm

To what volume should you dilute 15 mL of a 12 M stock HCl solution to obtain a 0.540 M HCl solution?

[匿名]

回覆: 4

2018-07-15 4:36 pm

solve the following: 27a-9b+3c-8=0 8a-4b+2c-8=0 -a-b-c-8=0 Find a,b,c?

[匿名]

回覆: 3

2018-07-15 2:47 pm

Help again, whats the molecule's name?

[匿名]

回覆: 1

2018-07-15 6:34 am

Chem II help?

[匿名]

回覆: 2

2018-07-15 6:50 am

Can pb2+ react with k2CrO4 and form precipitate ? Is it related to standard reduction potential ? thank you^^?

[匿名]

回覆: 3

2018-07-09 8:41 pm

Help! rate constant with half life at specific temp?

[匿名]

回覆: 6

2018-07-09 2:00 pm

Need help on Calculus homework?

[匿名]

回覆: 1

2018-07-09 12:30 pm

dx/1-2cosx+a^2?

[匿名]

回覆: 3

2018-07-09 11:37 am

Please help me with this physics problem!?

[匿名]

回覆: 1

2018-07-09 7:38 am

How much nitrogen is required to fully consume 11.8g of hydrogen?

[匿名]

回覆: 1

2018-07-09 8:14 am

K. How many amu of H2O and CO2 can be made from 64 amu of CH4 and excess O2? 1. H2O 2. CO2?

[匿名]

回覆: 1

2018-07-09 8:15 am

L. How many grams of H2O and CO2 can be made from 64 g of CH4 and excess O2? 1. H2O 2. CO2?

[匿名]

回覆: 1

2018-07-09 8:15 am

L. How many grams of H2O and CO2 can be made from 64 g of CH4 and excess O2? 1. H2O 2. CO2?

[匿名]

回覆: 1

2018-07-08 6:03 pm

Possible isomers for difluoropentaine?

[匿名]

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2018-07-08 4:11 pm

1. A 200 g copper block absorbs 2.34 x 10³ of heat to raise its temperature by 30.0 K. What is the specific heat of copper?

[匿名]

回覆: 2

2018-07-07 6:35 am

Chemistry Question?