andrew

[匿名]

回覆: 2

2020-04-07 1:45 pm

Mole of HCl and NH3. Reacted Chemistry ?

[匿名]

回覆: 4

2020-04-07 12:41 pm

A 80 g ice cube at −17◦C is dropped into a?

[匿名]

回覆: 2

2020-04-07 12:30 pm

What is the change in mass (grams) when 2 mol of hydrogen atoms combine to form 1 mol of hydrogen molecules? Remember that 1J=1Kg(m^2/s2) ?

[匿名]

回覆: 2

2020-04-02 12:52 am

What is the pH of a solution prepared by mixing 65.0 mL of 0.0686 M NaOH and 79.0 mL of 0.0218 M Ba(OH)2?

[匿名]

回覆: 2

2020-04-01 11:57 pm

CHEMISTRY HELP?

[匿名]

回覆: 1

2020-04-02 12:09 am

what is the percent yield ... ?

[匿名]

回覆: 2

2020-03-23 10:02 pm

The Curves below all have equations of the form y=x^2+bx+c. In each case find the values of b and c. Show your workings?

[匿名]

回覆: 2

2020-03-16 10:54 am

Calculate the number of g of silver nitrate required to prepare 3.25 L of 1.00 M AgNO3. Enter your answer in scientific notation?

[匿名]

回覆: 1

2019-12-23 10:55 pm

Trig/Math Questions!?

[匿名]

回覆: 2

2016-06-30 8:30 pm

What is the VSPER for XeF4 ? (Electron pairs and molecule shape)?

Kit yi

回覆: 1

2016-04-25 7:18 am

Is limewater a pure substance?

Kit yi

回覆: 2

2016-04-25 7:20 am

Is limewater a pure substance?

Kit yi

回覆: 1

2016-04-25 10:55 am

Is limewater a pure substance?

[匿名]

回覆: 1

2016-02-25 4:02 pm

In a calorimeter, a 1g sample of aluminium oxide is formed. , 17kj of energy is released. The molar enthalpy of combustion of aluminium is?

[匿名]

回覆: 1

2016-02-25 3:32 pm

calculate the number of sodium ions, perchlorate ions, Cl atoms and O atoms in 26.6 g of sodium perchlorate. Enter in scientific notation?

[匿名]

回覆: 1

2016-02-24 5:31 pm

Fill in the blanks in the sentences below?

[匿名]

回覆: 2

2016-02-24 5:17 pm

Please solve: log4|3x+2|=3 ASAP.?

[匿名]

回覆: 2

2016-02-24 5:13 pm

Solid aluminum reacts with copper II sulfate?

[匿名]

回覆: 1

2016-02-24 5:04 pm

Carbon disulfide is an important industrial solvent It is prepared by the reaction of coke with sulfur dioxide?

[匿名]

回覆: 5

2016-02-24 5:04 pm

What is the value of y in log y = 1.8?

[匿名]

回覆: 2

2016-02-24 4:48 pm

How do u solve these equations?

[匿名]

回覆: 1

2016-02-24 4:40 pm

s = what when it comes too ds/dt =3t^2/2s?

[匿名]

回覆: 1

2016-02-24 4:34 pm

To suck lemonade of density 1000 kg/m^3 up a straw to a maximum height of 4.0 cm.?

[匿名]

回覆: 1

2016-02-24 4:28 pm

What is the pressure increase in a fluid in a syringe when a nurse applies a force of 42 N to the syringe's circular piston?

[匿名]

回覆: 3

2016-02-24 4:06 pm

General College Chemistry - How many sigma bonds are in 125g of sodium acetate? (CH3CO2Na)?

[匿名]

回覆: 1

2016-02-24 4:07 pm

chlorine formula?

[匿名]

回覆: 1

2016-02-24 4:10 pm

chlorine formula?

[匿名]

回覆: 1

2016-02-24 4:11 pm

chlorine formula?

[匿名]

回覆: 2

2016-02-24 4:09 pm

chlorine formula?

[匿名]

回覆: 1

2016-02-24 3:53 pm

How would I do this calculation?

[匿名]

回覆: 7

2016-02-24 3:56 pm

Math Help ?

[匿名]

回覆: 1

2016-02-24 3:41 pm

find the area of the region bounded by the curve y=x^0.5 y=1 x=4 ? in details?

[匿名]

回覆: 3

2016-02-24 3:34 pm

Write the function x³-x²-7x-5 as a product of its linear factors ?

[匿名]

回覆: 2

2016-02-24 3:17 pm

I don't understand how to find the limit for this problem?

[匿名]

回覆: 1

2016-02-24 2:14 pm

A hiker walks from base camp for 10km on a bearing of 50degrees, then walks further 14km on a new bearing of 140degrees........?

[匿名]

回覆: 1

2016-02-24 10:19 am

The hydrogen ion concentration of a 10^-8M HCl aqueous solution at 298K(Kw=10^-14) is? How's the answer 1.0525×10^-7 M I'm getting 1.1×10^-7?

[匿名]

回覆: 7

2016-02-24 10:16 am

The sum of two numbers is 25 and their differences is 13 find their product?

[匿名]

回覆: 2

2016-02-24 9:50 am

Math Qns! Surds and Indices: Q1)If x is positive numbersuch that √x=p and ³√x=q,then p in terms q is? Q2)If g=t^2/3+4t^1/2,whats g when t=64?

[匿名]

回覆: 1

2016-02-24 8:09 am

How many grams of benzene, C6H6, can be melted with 42.5 kJ of heat energy? The molar heat of fusion of benzene is 9.95 kJ/mol.?

[匿名]

回覆: 3

2016-02-24 9:18 am

Find the value of K for which the following equations have 2 roots: x^2 -3x +k help please.?

[匿名]

回覆: 3

2016-02-24 8:56 am

Using law of sine and cosine what is Angle C and B and what does c equal?

[匿名]

回覆: 1

2016-02-24 8:31 am

So my teacher gave us a study guide for an upcoming test but not the answer sheet to it. So could someone help with this problem?

[匿名]

回覆: 2

2016-02-24 8:23 am

Find the function f(x) satisfying the given conditions. f ' (x) = 4 cos x, f (0) = 4?

[匿名]

回覆: 1

2016-02-24 8:10 am

How much heat energy is required to boil 13.3 g of ammonia, NH3? The molar heat of vaporization of ammonia is 23.4 kJ/mol.?

[匿名]

回覆: 1

2016-02-24 7:47 am

Is the concentration of a compound the same as the concentration of the ions within that compound?

[匿名]

回覆: 4

2016-02-24 7:26 am

How do i simplify this rational expression? 10 pts?

[匿名]

回覆: 1

2016-02-24 6:57 am

Basic probability question?

[匿名]

回覆: 2

2016-02-24 6:42 am

How many grams of PbBr2 will precipitate when excess CuBr2 solution is added to 68.0 mL of 0.682 M Pb(NO3)2 solution?

[匿名]

回覆: 1

2016-02-24 6:41 am

How many mL of 0.681 M HNO3 are needed to dissolve 8.18 g of CaCO3?

[匿名]

回覆: 4

2016-02-24 6:25 am

Simple Math Question?