胡雪8°

The heat of fusion of water is 6.01 kJ/mol. the heat capacity of liquid water is 75.3 J/mol-K.?

Help with a chemistry problem please?

Calculate KC for the reaction at this temperature.?

A and B react as follows: A + B eq 2C. The equilibrium constant is 5.0 x 10^6.?

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?

What amount of 0.50 mol/L NaOH is required to titrate 10.0 mL of a 2.00 mol/L H2SO4 solution?

Why is nitrogen more electronegative than bromine?

Calculate the pH of a solution that is 0.40 M HF and 1.00 M KF.?

Oxidation of the following alcohols leads to what product(s)? *match* ethanol, isopropyl alcohol, 2-methyl-2-pentanol, cyclohexanol?

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°.?

How to find the divisor in this question?

Iron can be produced from a mixture of aluminum and Fe2O3 according to the following equation.?

what will the reaction rate be at 49 °C?

AP Chemistry homework and I need help :(?

At high temperature, 2.00 mol of HBr was placed in a 4.00 L container where it decomposed in the reaction:?

Can someone explain how 2(5)^14 ≈ 1.22(10^10) ?

Help with physics homework! The magnitude keeps turning out as 9.34 m.?

Chem help??

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?

Recrystallization Question- Organic Chem?

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?

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?

what is the full atomic symbol for Cswith a mass number of 133.(2)?

If x^2=x, is the answer x=0, x=1 or x = undefined?

Which has a higher boiling point and intermolecular forces? Water or ammonia?

Write a reaction for the second electron affinity of oxygen?

It takes 45ml of 1.2M KOH to neutralize 60ml of H3PO4 solution. What is the molarity? H3PO4+3KOH=K3PO4+3H2O?

Chemistry?

Please help with this chemistry question..?

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?

If the procedure calls for 157mg of 4-tert-butylcyclohexanone, what mass of sodium borohydride should be added?

does o2^-2 contain polar bonds?

What feature makes the phase diagram of water unusual? chemistry multiple choice below?

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?

Need helped finding expected temperature change?

A standard solution...?

Given the following values?

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?

Why is the reaction rate equal to 1/time?

if the wavelength is -4.09x10^-19J what color would the line be?

what is the net equation of: nickel metal and copper(II) chloride(aq) ?

What happens when you mix Potassium Permanganate solution and Sodium Hydroxide and Sugar?

Chemistry question HELLLLPP!!!?

Consider the phase diagram, which applies?

Could someone help me with this Chemistry Webassign problem?

Please HELP someone. I have exam coming up.....?

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?

how many moles of h3bo3 would be needed to make 3.50 moles of na2b4o7?

how many moles of h3bo3 would be needed to make 3.50 moles of na2b4o7?

Chem help! Consider if 65g of KNO3 decomposes according to the following reaction, the molar mass of KNO3 is 101.11 g/mol.?