wanszeto

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回覆: 1

2018-03-16 1:39 pm

Electronic Configuration?

[匿名]

回覆: 4

2018-03-16 11:47 am

Calculate the force of gravity between two objects of masses 1500 kg and 7500 kg, which are 0.25 m apart. please show me how to do this?

[匿名]

回覆: 1

2018-03-16 12:16 am

Chemistry questions?

[匿名]

回覆: 8

2018-03-15 7:21 pm

what is 5 liters in kilograms?

[匿名]

回覆: 3

2018-03-15 6:08 pm

The power per square metre at 100m is measured to be 4µW/m2. What would be a reasonable value to expect at 200m?

[匿名]

回覆: 6

2018-03-15 3:17 pm

Which is the baby? The egg or the sperm?

[匿名]

回覆: 3

2018-03-14 10:17 pm

Polynomial functions question please help..?

[匿名]

回覆: 5

2018-03-14 7:13 pm

Why fossil fuels contain carbon?

[匿名]

回覆: 1

2018-03-14 2:09 pm

The change in standard molar entropy, DS°, for the following reaction is 494.6 J/mol × K at 25°C. 2KClO3(s) ⇌ 2KCl(s) + 3O2(g).?

[匿名]

回覆: 1

2018-03-14 12:27 pm

Calculate the PH of 0.2 M solution potassium acetat. Write a Balanced equation for all reactions and equilibrium that describe this solution?

[匿名]

回覆: 1

2018-03-14 12:19 am

What is the difference in pH for 1/3 and 2/3 stages of neutralisation of 0.1 M CH3COOH with 0.1 M NaOH.?

[匿名]

回覆: 2

2018-03-13 11:30 pm

How much heat must be added to 3.05 kg of copper to change it from a solid at 1358 K to a liquid at 1358 K?

[匿名]

回覆: 2

2018-03-13 6:02 am

combination/permutation help!?!?

[匿名]

回覆: 2

2018-03-13 1:29 pm

Dont know where to start Physics problem?

[匿名]

回覆: 1

2018-03-12 10:14 pm

Use the Henderson-Hasselbalch equation to perform the following calculations?

[匿名]

回覆: 2

2018-03-12 8:05 pm

Can somebody prove y - y1 = m(x - x1) ?

[匿名]

回覆: 2

2018-03-12 2:44 pm

given the function g(x)= x^3-2x+3, the differnce quotiebt (g(1+h)-g(1)/h. (h dont equl 0) is equal to?

[匿名]

回覆: 1

2018-03-12 2:43 pm

Calculate [S2-] of a 0.0533 M solution of hydrogen sulfide (H2S) Where:?

[匿名]

回覆: 9

2018-03-12 1:51 pm

if the sum of 5 consecutive numbers is 95. what is the third number?

[匿名]

回覆: 2

2018-03-12 12:21 pm

Light traveling in air is incident on the surface of a block of plastic at an angle of 62.7∘ to the normal and is bent so that it makes?

[匿名]

回覆: 2

2018-03-12 11:22 am

What is the measure of angle A?

[匿名]

回覆: 1

2018-03-12 11:09 am

chem help please?

[匿名]

回覆: 1

2018-03-11 5:26 pm

how many bonding and lone pair does cf4 have?

[匿名]

回覆: 2

2018-03-09 10:49 pm

NEED CHEM PLEASE HELP CALCULATING CONCENTRATIONS AT EQUILIBRIUM?

[匿名]

回覆: 1

2018-03-09 10:34 am

An aqueous solution contains 0.453 M Na2HPO4 and 0.167 M H2PO4-. The pH of this solution is .?

[匿名]

回覆: 2

2018-03-08 11:26 pm

Acetic Acid + H2O? 10 points to best answer.?

[匿名]

回覆: 3

2018-03-08 10:57 pm

Prove the identity Sin x -cos x /sec x - csc x =sin2x/2?

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回覆: 2

2018-03-08 9:45 pm

How many grams of Zn reacted IN Zinc Iodide reaction?

[匿名]

回覆: 1

2018-03-08 12:54 pm

Need help with mass to mass stoichiometry for chemistry?

[匿名]

回覆: 1

2018-03-08 1:24 pm

An object of mass?

[匿名]

回覆: 2

2018-03-08 3:47 pm

calculate the liters of a 1.90 M NaCl solution to obtain 12.0 moles of NaCl?

[匿名]

回覆: 2

2018-03-08 11:17 am

Chemistry help please. Reaction question?

[匿名]

回覆: 4

2018-03-07 5:50 pm

Is this correct? (Simple Products, MATHEMATICS) (8+6x) (8-6x) = (8)2 - (6x)2 = 82 - 62x2 = 64 - 36x2 FINAL?

[匿名]

回覆: 2

2018-03-07 10:13 am

The equilibrium constant, Kc, for the following reaction is 77.5 at 600 K. CO(g) + Cl2(g) COCl2(g)?

[匿名]

回覆: 1

2018-03-06 11:58 am

In the equilibrium of acetic acid explain what will happen to the pH of the solution when sodium acetate(CH3COONa) is added to the solution?

[匿名]

回覆: 1

2018-03-06 7:36 pm

can someone help me with this chemistry problem pls?

[匿名]

回覆: 1

2018-03-06 12:15 pm

I need chemistry help!?

[匿名]

回覆: 2

2018-03-04 3:53 pm

Calculate the relative molecular mass?

[匿名]

回覆: 1

2018-02-28 6:20 pm

10cm3 of pure hydrocarbon was completely burnt in 95cm3 of oxygen (excess) at 425 k after cooling to room temperature,?

[匿名]

回覆: 1

2018-02-27 9:24 pm

What is the oxidation state (number) of Phosphorous (P) in PO43- ? The oxidation number of O in this ion is -2.?

[匿名]

回覆: 1

2018-02-25 3:42 pm

Whats‘up？Chemistry?

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回覆: 2

2018-02-23 9:12 am

What is the theoretical yield in grams?

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回覆: 1

2018-02-23 8:38 am

identify Bronsted-Lowry conjugate acid and base pairs?

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2018-02-22 3:09 pm

Volume question? (chemistry)?

[匿名]

回覆: 1

2018-02-22 12:33 am

What is the limiting reagent?

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回覆: 1

2018-02-21 12:34 pm

reaction in 2cu+----cu2+cu?

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回覆: 3

2018-02-21 5:40 pm

Calculate the milliequivalent weight of Mg(NO3)2.?

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2018-02-21 2:46 pm

How much heat in Kj is released when 90.0 g of steam at 113 C is cooled to ice at -26 C?

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回覆: 2

2018-02-21 1:06 pm

The chemical formula for V3+ and SO42- is?

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回覆: 1

2018-02-21 10:02 am

Calculate the pH after 0.16 mol of NaOH is added to 1.00 L of the solution that is 0.55 M HF and 1.08 M KF.?