wanszeto

[匿名]

回覆: 3

2018-05-27 3:26 pm

What is the equation for the acid ionization constant of HF?

[匿名]

回覆: 3

2018-05-27 1:30 pm

The pressure in a gas mains is found to be 1.76 atm. Convert this into kPa.?

[匿名]

回覆: 3

2018-05-27 10:52 am

Help me to find the solve?

[匿名]

回覆: 2

2018-05-25 12:33 pm

Chemistry Question!!?

[匿名]

回覆: 2

2018-05-23 8:20 pm

Does the type of acid affect the mass of product formed?

[匿名]

回覆: 1

2018-05-23 2:33 pm

What is the pH of a 2.62x10^-1 M NH3 solution? pKa for NH4+=9.241?

[匿名]

回覆: 1

2018-05-20 8:07 pm

wat are reactants in the process of cell respiration. A)Water and sugar B)Sugar and oxygen C)Water and oxygen D)Water and carbon dioxide?

[匿名]

回覆: 5

2018-05-20 10:29 am

Can Neon form compounds? If so, what is it?

[匿名]

回覆: 1

2018-05-20 2:59 pm

You poured in 30.0 mL of 2.0 M NaOH into a calorimeter containing 30.0 mL of 2.0 M HCl.?

[匿名]

回覆: 1

2018-05-20 3:03 pm

Find # of g of each product thats produced from 100.0 g of Na2CO3 and 300. g of Fe3Br8 by reaction 4 Na2CO3 + Fe3Br8 8NaBr + 4CO2 + Fe3O4?

[匿名]

回覆: 1

2018-05-20 11:39 am

What is the chemical equation for the reduction of NO3- to N2O and then N2O to N2?

[匿名]

回覆: 4

2018-05-20 12:55 am

Please hurry my teacher never taught this and I have finals 2 days from now.?

[匿名]

回覆: 5

2018-05-19 10:22 pm

find the intergral of cos(lnx) dx?

[匿名]

回覆: 2

2018-05-16 12:04 pm

PHYSICA HELP?

[匿名]

回覆: 1

2018-05-16 10:14 am

What is the chemical equation for phenolphthalein & ammonia?

[匿名]

回覆: 1

2018-05-16 11:22 am

Suppose that 17.04 mL of 0.468 M Ca(OH)2 is required to neutralize 13.7 mL of aqueous HCl solution.?

[匿名]

回覆: 4

2018-05-15 3:25 pm

p(x)is a polynomial of 4th degree,remainder of p(x)is 40 when divided by (x-3) or by (x+3).Find p(x)if (x-1),(x-2),(x-3) are factors of p(x)?

[匿名]

回覆: 7

2018-05-15 12:44 pm

Can you please show me how to find the derivative of the given function: (2x-3y)^3 = x^2 - y?

[匿名]

回覆: 3

2018-05-15 11:00 am

How much mass of CuSO4 would you need when reacting with 23 grams of Al?round answer to the nearest tenths 2 Al + 3 CuSO4 → Al2(SO4)3 + 3 Cu?

[匿名]

回覆: 1

2018-05-15 7:54 am

what is the molarity of a solution with 198 grams sodium hydroxide dissolved in enough water to make 1.5 liters of solution?

[匿名]

回覆: 3

2018-05-15 12:37 am

How many liters of 6.0 M H2SO4 are needed to make 0.50 L of 1.0 M solution?

[匿名]

回覆: 1

2018-05-14 10:53 am

CHEMISTRY HELP!! For equilibrium reaction A <=> B, and from k=Ae^(-Ea/RT), derive equation ln(K1/K2)=deltaH/R(1/T2-1/T1)?

[匿名]

回覆: 2

2018-05-14 8:04 am

The reaction 4Al (s) + 3O2 (g) → 2 Al2O3 (s) ΔH° = -3351 kJ is __________, and therefore, heat is __________ by the reaction.?

[匿名]

回覆: 1

2018-05-13 3:36 am

3 Oxidation - Reduction Problems Chemistry (Any help is great, thanks so much!)?

[匿名]

回覆: 5

2018-05-12 4:55 pm

the direction of bond polarity for the Cl-F bond?

[匿名]

回覆: 2

2018-05-13 4:38 pm

You are given a ~0.1 M NaOH solution and need to standardize it, so you will be making a 250.00 mL 0.1 M KHP solution....?

[匿名]

回覆: 2

2018-05-11 12:46 pm

Which of the following ions will affect the pH of an aqueous solution? Al+3 Br- Na+ NO3-?

Christopher

回覆: 2

2018-05-09 2:41 pm

Hi, chemistry?

[匿名]

回覆: 6

2018-05-09 9:20 am

Math help please!?

[匿名]

回覆: 2

2018-05-08 8:53 pm

Algebra 2 help please?

[匿名]

回覆: 4

2018-05-06 9:54 am

Draw A) 2,4-dimethyl-2-pentene B) 3-methyl-4-ethyl-2-hexene C) methylbutane?

[匿名]

回覆: 1

2018-05-06 11:55 am

Chemistry help! acid and bases?

[匿名]

回覆: 1

2018-05-02 12:35 pm

How many fluorine atoms can be made from 21.3 g of boron trifluoride?

[匿名]

回覆: 3

2018-04-21 3:48 pm

URGENT ! PLEASE SOLVE BELOW CHEMISTRY QUESTION. Answer is 1 atmosphere?

[匿名]

回覆: 8

2018-04-13 2:22 pm

Algebra 2 trigonometry help please?

[匿名]

回覆: 2

2018-04-13 1:25 pm

A 3.0 kg particle is moving with a velocity v(t) = (5.0î + 7.0tĵ) m/s?

[匿名]

回覆: 2

2018-04-13 11:49 am

When 0.280 g of Na(s) reacts with excess F2(g) to form NaF(s), 6.90 kJ of heat is released to surroundings at standard-state conditions.?

[匿名]

回覆: 3

2018-04-11 7:49 pm

When the reaction get colder in an endothermic reaction what has happened to the heat energy?

[匿名]

回覆: 3

2018-04-11 12:21 pm

Convert a pressure of 2.91 atm to kPa. Answer in units of kPa?

[匿名]

回覆: 1

2018-04-11 10:57 am

A net force of 0.340 N i + 0.240 N j is applied to a 170-g hockey puck for 4.50 s.?

[匿名]

回覆: 4

2018-04-11 10:23 am

Find an angle between 0° and 360° that is coterminal with the given angle. −200°?

[匿名]

回覆: 1

2018-04-11 7:43 am

A helium-filled balloon has a volume of 2.87 L at 15◦CThe volume of the balloon decreases to 2.46 L after it is placed outside on a cold day?

[匿名]

回覆: 1

2018-04-11 12:07 am

Calculate the partial pressures of N2 and O2 followed by the total pressure?

[匿名]

回覆: 3

2018-04-11 3:41 am

What is the measure of ∠C ?

[匿名]

回覆: 2

2018-04-10 9:23 pm

Please help me with some probability algebra questions?

[匿名]

回覆: 1

2018-04-10 8:27 am

A solution contains [Ba+2]=0.75 M and [Pb+2]=0.015 M. What is the [SO4] needed to selectively precipitate the barium?

[匿名]

回覆: 3

2018-04-10 3:10 pm

the sum of a number and four is tripled, the result is six less than twice the number. Find the number.?

[匿名]

回覆: 1

2018-04-10 2:11 pm

Chemistry Help!!!!!!!!?

[匿名]

回覆: 2

2018-04-10 1:31 pm

Chemistry question help! Consider the following reaction: 2SO2(g)+O2(g)→2SO3(g) What is the theoretical yield of SO3?

[匿名]

回覆: 1

2018-04-09 11:28 pm

Compare the relative basicity of Ca(OH)2 and C2H5NH2 solutions. Briefly explain on what basis you can or cannot make this comparison.?