不用客氣

[匿名]

回覆: 3

2018-01-12 4:12 pm

x^4-10x^2+1=0?

[匿名]

回覆: 1

2018-01-12 7:07 am

Calorimetry?

[匿名]

回覆: 2

2018-01-12 11:11 am

How many µl of tetracycline stock solution and how much water do you use?

[匿名]

回覆: 1

2018-01-12 9:16 am

Rate Law Question?

[匿名]

回覆: 5

2018-01-11 4:39 pm

what is the answer Also show your working.....?

[匿名]

回覆: 2

2018-01-11 10:26 am

Physics pressure question?

[匿名]

回覆: 9

2018-01-10 3:32 pm

How do I solve this? (8/125)^(-2/3)?

[匿名]

回覆: 4

2018-01-10 3:18 pm

Please help me solve a calc problem: find an equation of the tangent line to the graph of f(x)=(x+3)/(x^2+2) at x=1?

[匿名]

回覆: 4

2018-01-10 12:50 pm

Can you help me with this math problem?

[匿名]

回覆: 2

2018-01-10 12:03 pm

Show all work.Balance each of the following half-reactions under basic conditions (#1)Cr^3+(aq)-->CrO4^2-(aq) (#2)HSnO2^-(aq)-->HSnO3^-(aq)?

[匿名]

回覆: 2

2018-01-09 11:07 pm

Write the balanced chemical equation that occurs if Hg(s), HgCl2(aq), Mn(s), and MnCl2(aq) are mixed together?

[匿名]

回覆: 5

2018-01-09 7:05 pm

If 10 workers can assemble 30 TV sets om 8 hours, how many TV sets will 40 workers assemble in 4 hours, assuming they work at the same rate?

[匿名]

回覆: 2

2018-01-09 5:49 pm

HCO+HF=H2CO+F Why in this reaction of acid and base salt and water is not produced?

[匿名]

回覆: 9

2018-01-09 4:37 pm

How strong is stomach acid?

[匿名]

回覆: 3

2018-01-09 5:07 pm

If NH4 ion is an acid and OH ion is a base why they doesn't directly react together?

[匿名]

回覆: 1

2018-01-09 10:09 am

A 2.50 g copper coin is given a charge of -2.00 ́ 10-9 C.?

[匿名]

回覆: 5

2018-01-09 12:00 pm

How to you convert Molecular Mass (g/mole) to the total number of molecules/atoms?

[匿名]

回覆: 2

2018-01-09 11:36 am

what is the balanced chemical reaction between Calcium Chloride and water in a heat pack?

[匿名]

回覆: 3

2018-01-09 11:22 am

Collisions in one dimension?

[匿名]

回覆: 3

2018-01-09 11:09 am

please help me with a physics problem?

[匿名]

回覆: 1

2018-01-09 10:20 am

At 25 degrees C, C2H6 effuses at a rate of 0.38 mol per minute. Which gas would have a rate of effusion approximately one-half as fast?

[匿名]

回覆: 5

2018-01-08 11:20 pm

integral of sin(3x)cos(2x)dx?

[匿名]

回覆: 3

2018-01-08 10:04 pm

Which metal will react least rapidly with water? A : Sr B : K C : Na D : Rb?

[匿名]

回覆: 2

2018-01-08 8:51 pm

After balancing the following reaction in basic solution, how many electrons have been transferred?

[匿名]

回覆: 3

2018-01-08 7:26 pm

✓　　 log₂(log₈x) = log₈(log₂x)　➚　(log₂x)² = __.?

[匿名]

回覆: 2

2018-01-06 10:19 pm

關於化學題目反應級數?

[匿名]

回覆: 3

2018-01-08 12:29 pm

chemical equations. help please!?

[匿名]

回覆: 1

2018-01-08 12:41 pm

write a sentence that describes a chemical equation in which the listed chemical might be formed.?

[匿名]

回覆: 2

2018-01-08 9:16 am

Oxidation number of Mg3B2?

[匿名]

回覆: 1

2018-01-07 9:24 pm

Can someone help me do my titration calculations homework?

[匿名]

回覆: 2

2018-01-07 11:24 am

For the same mass (i.e. same number of molecules), explain why CO2 has a higher volume than dry ice.?

[匿名]

回覆: 2

2018-01-06 8:39 pm

A box of 65.0 kg is going down with a 37.2 degree. It has a mu of 0.107 , what is N?

[匿名]

回覆: 3

2018-01-06 9:13 am

helpppp plss?

[匿名]

回覆: 1

2018-01-06 4:52 pm

Chemistry question ( alkane naming)?

[匿名]

回覆: 4

2018-01-06 6:11 am

I m stuck on this question, i m trying to use boyles law p1xv1=p2xv2 but it doesn t make sense. however p1xv2=p2xv1 does. This is not a law?

[匿名]

回覆: 6

2018-01-06 12:34 am

A football is kicked at ground level with a speed of 18.8 m/s at an angle of 41.0 ∘ to the horizontal.?

[匿名]

回覆: 3

2018-01-05 5:46 pm

A shopper pushes a 5.32kg cart with ab12.7N?

[匿名]

回覆: 6

2018-01-04 6:51 pm

8 cakes and 3 pies cost a total of 6.40. 5 cakes and 2 pies cost a total of 4.05. work out the cost of a cake?

[匿名]

回覆: 4

2018-01-04 6:38 pm

how many oxygen atoms are there in a representative particle of acetylsalicylic acid, C9H8O4, aspirin?

[匿名]

回覆: 5

2018-01-04 2:53 pm

What group Hydrogen belongs in Periodic table?

[匿名]

回覆: 4

2018-01-03 11:21 pm

physics help?

[匿名]

回覆: 2

2018-01-03 9:14 pm

chemistry questions help please?

[匿名]

回覆: 5

2018-01-03 5:43 pm

geometric progression anybody?

[匿名]

回覆: 1

2018-01-01 8:35 pm

Energy of electron -52.53kilo joule per mole is for?

[匿名]

回覆: 6

2018-01-01 5:52 pm

Hi if I burn tissue paper and dose it with water to extinguish it and throw it in the trash, would that light the other tissue paper on fire?

[匿名]

回覆: 1

2018-01-01 12:30 pm

Write the acid-base reaction between KHP and water, showing the chemical structure of KHP.So show the proton transfer between KHP and water?

[匿名]

回覆: 2

2018-01-01 10:08 am

Place the compounds in order from weakest IMFs to strongest IMFs from the lists below.?

[匿名]

回覆: 6

2017-12-31 11:42 pm

Compute distance between the 2 points (1- √2, -1) & (2+√2, 4). Show work.?

[匿名]

回覆: 2

2017-12-31 11:16 pm

A container of 20cm height is half filled with glycerin and half filled with water calculate the liquid pressure at the bottom of container?

[匿名]

回覆: 2

2017-12-31 8:43 pm

chem 有東西不會?