fooks

[匿名]

回覆: 2

2016-05-10 6:55 am

Chemistry help?

[匿名]

回覆: 1

2016-05-10 6:17 am

How many acetone molecules are in a bottle of acetone with a volume of 395 mL ? (density of acetone = 0.788 g/cm3).?

[匿名]

回覆: 2

2016-05-10 6:40 am

what is the pH and pOH of a 5.906 * 10exponent -4 M perchloric acid solution?

[匿名]

回覆: 2

2016-05-10 6:29 am

when 8gram hydrogen reacts with 8g oxygen how much water is produced?

[匿名]

回覆: 1

2016-05-10 6:23 am

Finding The Initial I- Concentration In A solution Please Help with exaplin?

[匿名]

回覆: 1

2016-05-10 4:18 am

設f(x)=x√(x^2+4)，求f(x)在x=0的導數?

[匿名]

回覆: 1

2016-05-09 11:13 pm

What is the net ionic equation of the reaction of MgCl2 with NaOH?

[匿名]

回覆: 2

2016-05-09 10:02 pm

Chemistry help! Molarity (with work)?

[匿名]

回覆: 1

2016-05-09 8:45 pm

Where do I start?

[匿名]

回覆: 2

2016-05-09 7:17 pm

How to find no of common terms in 2 arithmetic progressions?

[匿名]

回覆: 1

2016-05-06 3:40 pm

Reaction between Potassium Permanganate and Vanadium (II)?

[匿名]

回覆: 1

2016-05-06 8:39 am

Zn + Cu(NO3)2 -> Cu+Zn(NO3)2 Identify the spectator ions in the following reaction?

[匿名]

回覆: 1

2016-05-06 3:18 am

State whether the given measurements determine zero, one, or two triangles. B = 86°, b = 21, c = 18?

[匿名]

回覆: 1

2016-05-04 5:07 pm

Question about Chromium, Oxidation states and colored solutions?

[匿名]

回覆: 1

2016-05-02 4:48 pm

Finding organic overall reaction?

[匿名]

回覆: 1

2016-04-29 3:34 am

how many molecules in a sample of SO3 that has a mass of 1000 grams?

[匿名]

回覆: 3

2016-04-27 4:27 pm

A bus increases its speed from 20 km/hour to 50 km/hour in 10 second. Find its acceleration?

[匿名]

回覆: 2

2016-04-27 7:35 am

Can you help me with this trig homework question?

Kit yi

回覆: 1

2016-04-26 6:27 am

Is limewater a pure substance? ?????????

[匿名]

回覆: 1

2016-04-26 4:12 am

find the vertex of g(x)=(x-2)^+7?

[匿名]

回覆: 3

2016-04-13 4:57 pm

The midpoint of AB is at (-1,-4). If A=(-5,-3), find B.?

[匿名]

回覆: 2

2016-04-06 1:43 am

ln(2x+3)=ln(5x-6) Please help?

[匿名]

回覆: 2

2016-03-30 9:19 am

How many grams of oxygen gas must react to give...?

[匿名]

回覆: 1

2016-03-30 9:12 am

What is the net charge of an object that has 1.0 million excess electrons?

[匿名]

回覆: 1

2016-03-30 9:10 am

50,000 Million is how many Billion?

[匿名]

回覆: 1

2016-03-30 9:00 am

Express the concentration of a 0.0440 M aqueous solution of fluoride, F–, in mass percentage and in ppm.?

[匿名]

回覆: 1

2016-03-28 4:30 pm

A 560 mL sample of a gas at 335 ∘C and 1.20 atm is cooled at constant pressure until its volume becomes 450 mL What is the final gas temp?

[匿名]

回覆: 1

2016-03-28 4:23 pm

A 16.0 L gas cylinder has been filled with 7.80 moles of gas You measure the pressure to be 4.20 atm What is the temperature inside the tank?

Man ho

回覆: 2

2016-03-28 11:02 am

因式分解以下题目，並 列步骤 X^2-X-12?

[匿名]

回覆: 1

2016-03-22 4:21 pm

acid base equilibrium?

[匿名]

回覆: 1

2016-03-22 10:51 am

PLEASE HELP WITH CHEMISTRY!!?

[匿名]

回覆: 2

2016-03-18 6:59 am

which compound contain both ionic and covalent bond? a.ammonia b.ammonia chloride c.hydrogen chloride d.sodium chloride?

[匿名]

回覆: 3

2016-03-17 5:17 pm

Find the value of sin(α - θ)?

[匿名]

回覆: 2

2016-03-17 5:09 pm

why it is necessary to acidify the silver nitrite solution?

[匿名]

回覆: 2

2016-03-17 4:48 pm

How to distinguish between sodium nitrate, sodium nitrite, sodium sulphate and sodium sulphite?

[匿名]

回覆: 1

2016-03-17 4:28 pm

Kb for methylamine (CH3NH2) is 4.4 x 10-4. What is the pH of a 0.210M solutions of methylamine?

[匿名]

回覆: 1

2016-03-17 4:29 pm

PH help please!?

[匿名]

回覆: 1

2016-03-17 4:13 pm

|sinx|=|cosx|?

[匿名]

回覆: 3

2016-03-17 4:08 pm

A pyramid with a square base that is 10 cm on a side has a height of 12 cm. The volume of the pyramid is ____cm3.?

[匿名]

回覆: 2

2016-03-17 4:02 pm

y = x² - 18x + 30 in vertex form?

[匿名]

回覆: 2

2016-03-17 7:59 am

The empirical formula of a diprotic acid is CHO with a molecular weight of 86.2?

[匿名]

回覆: 2

2016-03-17 11:44 am

A total of 1500 calories of heat are added to 100.0 g of water initially at 10.0°C. What is the final temperature of the water?

[匿名]

回覆: 2

2016-03-17 11:33 am

4x+3 ≤ |1-3x| Help?

[匿名]

回覆: 1

2016-03-17 10:29 am

HXeO4- + 2PH3 =Xe + 2P+ 3H2O+ OH- name element oxidized name element reduced formula oxidizing agent formula of the reducing agent?

[匿名]

回覆: 2

2016-03-17 10:57 am

newton 1st law is valid in absence of net force or not?

[匿名]

回覆: 1

2016-03-17 10:45 am

Find the HCF of 4x(x-2) and 6x(x-2)^2?

[匿名]

回覆: 2

2016-03-17 10:57 am

Expand cos4A?

[匿名]

回覆: 2

2016-03-17 11:03 am

What is more reactive with Potassium? Sodium, Calcium, Bromine, Argon or Sulfur.?

[匿名]

回覆: 2

2016-03-17 11:13 am

NA+3H2O=NAOH+H2?

[匿名]

回覆: 1

2016-03-17 11:04 am

3 + √x + 19 - √2x when x = 6 As a decimal?