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[匿名]
回覆: 1
2018-02-23 7:40 am
The heat of fusion of water is 6.01 kJ/mol. the heat capacity of liquid water is 75.3 J/mol-K.?
[匿名]
回覆: 2
2018-02-22 1:07 pm
Help with a chemistry problem please?
[匿名]
回覆: 1
2018-02-22 12:52 am
Calculate KC for the reaction at this temperature.?
[匿名]
回覆: 1
2018-02-22 12:14 am
A and B react as follows: A + B eq 2C. The equilibrium constant is 5.0 x 10^6.?
[匿名]
回覆: 1
2018-02-21 6:22 pm
In the reaction 2 CO(g) + O2(g) ---> 2 CO2 (g), what is the ratio of moles of oxygen used to moles of CO2 produced?
[匿名]
回覆: 1
2018-02-21 5:23 pm
What amount of 0.50 mol/L NaOH is required to titrate 10.0 mL of a 2.00 mol/L H2SO4 solution?
[匿名]
回覆: 1
2018-02-21 11:02 am
Why is nitrogen more electronegative than bromine?
[匿名]
回覆: 1
2018-02-21 10:00 am
Calculate the pH of a solution that is 0.40 M HF and 1.00 M KF.?
[匿名]
回覆: 3
2018-02-20 10:11 am
Oxidation of the following alcohols leads to what product(s)? *match* ethanol, isopropyl alcohol, 2-methyl-2-pentanol, cyclohexanol?
[匿名]
回覆: 7
2018-02-20 6:11 pm
A ranger wants to determine the height of a tree across a river. Elevation from bank 50°. Walls back 37 feet. New angle of elevation is 26°.?
[匿名]
回覆: 1
2018-02-20 7:55 pm
How to find the divisor in this question?
[匿名]
回覆: 3
2018-02-20 6:28 pm
Iron can be produced from a mixture of aluminum and Fe2O3 according to the following equation.?
[匿名]
回覆: 1
2018-02-19 11:34 pm
what will the reaction rate be at 49 °C?
[匿名]
回覆: 2
2018-02-19 12:24 pm
AP Chemistry homework and I need help :(?
[匿名]
回覆: 2
2018-02-18 10:46 am
At high temperature, 2.00 mol of HBr was placed in a 4.00 L container where it decomposed in the reaction:?
[匿名]
回覆: 7
2018-02-14 4:13 pm
Can someone explain how 2(5)^14 ≈ 1.22(10^10) ?
[匿名]
回覆: 3
2018-02-14 12:09 pm
Help with physics homework! The magnitude keeps turning out as 9.34 m.?
[匿名]
回覆: 1
2018-02-14 1:37 pm
Chem help??
[匿名]
回覆: 1
2018-02-14 10:47 am
a sample of h2o with the mass of 46.0 grams has a temp of -58.0 how many joules of energy are necessary to melt 46.0 grams of ice?
[匿名]
回覆: 2
2018-02-13 1:34 am
Recrystallization Question- Organic Chem?
[匿名]
回覆: 1
2018-02-13 1:35 am
If the molar solubility of lead(II) chloride is 1.6E-2, what mass of solid lead(II) chloride dissolves in 433 mL of water at 25 oC?
[匿名]
回覆: 1
2018-02-13 12:53 am
what is acidic, basic, and neutral? [OH-]= 7.0 X 10^-13 [OH-]=3.8 X 10^-6 [H+]= 8.3 X 10^-3 [H+]= 9.6 X 10^-10?
[匿名]
回覆: 2
2018-02-12 3:02 pm
what is the full atomic symbol for Cswith a mass number of 133.(2)?
[匿名]
回覆: 7
2018-02-12 10:09 am
If x^2=x, is the answer x=0, x=1 or x = undefined?
[匿名]
回覆: 1
2017-11-10 3:41 pm
Which has a higher boiling point and intermolecular forces? Water or ammonia?
[匿名]
回覆: 2
2017-11-10 9:35 am
Write a reaction for the second electron affinity of oxygen?
[匿名]
回覆: 1
2017-11-09 12:43 am
It takes 45ml of 1.2M KOH to neutralize 60ml of H3PO4 solution. What is the molarity? H3PO4+3KOH=K3PO4+3H2O?
[匿名]
回覆: 1
2017-11-08 12:16 pm
Chemistry?
[匿名]
回覆: 1
2017-11-08 1:30 pm
Please help with this chemistry question..?
[匿名]
回覆: 1
2017-11-07 8:58 pm
0.568 mol sample of carbon dioxide gas at a temperature of 30.0 °C is found to occupy a volume of 23.1 liters. The pressure of this gas sam?
[匿名]
回覆: 1
2017-11-07 4:51 pm
If the procedure calls for 157mg of 4-tert-butylcyclohexanone, what mass of sodium borohydride should be added?
[匿名]
回覆: 1
2017-11-07 10:49 am
does o2^-2 contain polar bonds?
[匿名]
回覆: 1
2017-11-07 9:32 am
What feature makes the phase diagram of water unusual? chemistry multiple choice below?
[匿名]
回覆: 1
2017-11-06 11:05 am
If I start Mg + 2HNO3 = Mg(NO3)2 + H2 with 30 grams of Magnesium and an excess of Nitric Acid, how many grams of Hydrogen gas will be made?
[匿名]
回覆: 1
2017-11-06 3:41 pm
Need helped finding expected temperature change?
[匿名]
回覆: 1
2017-11-06 4:05 pm
A standard solution...?
[匿名]
回覆: 1
2017-11-06 4:08 pm
Given the following values?
[匿名]
回覆: 2
2017-11-06 1:22 pm
Considering the limiting reactant concept, how many moles of A3B2 are produced from the reaction of 5.0 mol A and 4.00 mol B?
[匿名]
回覆: 2
2017-11-06 11:51 am
Why is the reaction rate equal to 1/time?
[匿名]
回覆: 1
2017-11-06 11:38 am
if the wavelength is -4.09x10^-19J what color would the line be?
[匿名]
回覆: 1
2017-11-06 10:31 am
what is the net equation of: nickel metal and copper(II) chloride(aq) ?
[匿名]
回覆: 1
2017-11-05 1:40 pm
What happens when you mix Potassium Permanganate solution and Sodium Hydroxide and Sugar?
[匿名]
回覆: 1
2017-11-05 3:31 pm
Chemistry question HELLLLPP!!!?
[匿名]
回覆: 1
2017-11-05 5:08 am
Consider the phase diagram, which applies?
[匿名]
回覆: 3
2017-11-04 11:28 pm
Could someone help me with this Chemistry Webassign problem?
[匿名]
回覆: 2
2017-11-04 1:04 pm
Please HELP someone. I have exam coming up.....?
[匿名]
回覆: 1
2017-11-01 10:38 pm
A secondary amine should only exhibit only one N-H stretch. However, 2 N-H stretches appeared in the spectrum. What could account for this?
[匿名]
回覆: 1
2017-11-01 12:56 pm
how many moles of h3bo3 would be needed to make 3.50 moles of na2b4o7?
[匿名]
回覆: 1
2017-11-01 12:57 pm
how many moles of h3bo3 would be needed to make 3.50 moles of na2b4o7?
[匿名]
回覆: 2
2017-11-01 10:10 am
Chem help! Consider if 65g of KNO3 decomposes according to the following reaction, the molar mass of KNO3 is 101.11 g/mol.?
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