chemistry! URGENT

60,186 results, page 40

chemistry

ho electrons are there in a silicon atoms?

chemistry

(2*10^3g/8.165g)/(0.071cm^3/0.051cm^3)

Chemistry

What is the uncertainty (+/- ?) of molar concentration (M)?

Chemistry

What is the percentage of nitrogen in N2O?

chemistry

10 l of a solution containing 1.5 moles of HI

chemistry

PH of gatorade and body sweat

Chemistry

If 30 ml of 02 M HCL with 45 ml what is the molarity of NaOH

Chemistry

What is C7H6O3 in empirical form and how do you get there?

Chemistry

I don't know what to do once I get the .49999 number

Chemistry

Can I call someone and talk to them

Chemistry

Does a k constant have a unit?

chemistry

A compound is 52.17 % C, 13.04 % H and 34.78 % O. What is its empirical formula?

Chemistry

2Li + Cu(NO3) > 2LiNO3 + Cu

Chemistry

Does methane dissolve in water?

science

write aout chemistry

Chemistry

is concrete homogeneous or heterogeneous

Chemistry

Is photosynthesis a reversible reaction?

Chemistry

Is fermentation an irreversible reaction?

Chemistry

Can I know the molarity of acid rain?

chemistry

Le Chatelier's principle lab

chemistry

Convert 1.01 x 10-8 seconds to nanoseconds

CHEMISTRY

what is the proper name for C6H14?

Chemistry

how many gram of Cl are in475g of CaCl

chemistry

how i can prepare 0.6M H3PO4(250ml).

chemistry

how i can prepare 0.6M 6H3PO4(250ml).

chemistry

6.3E10 cm converted to ft would be

chemistry

what is the anion and cation of Na2CrO4

chemistry

what is the anion and cation of Na2CrO4

chemistry

what is the bond order for BeF2?

chemistry

what is the molarity of the KCI solution.

Chemistry

Why is Hydrogen sulfate amphiprotic?

Chemistry

Can pi bonds be made from d-orbitals?

Chemistry

Can pi bonds be made from d-orbitals?

CHEMISTRY

^H FOR CS2+3O>CO2+2SO2

Chemistry

Are there any disadvantages of a mass spectrometer

Chemistry

What is the chemical formula and name for: Na+1 and Na-3?

chemistry

why potassium permegnate is colourd

chemistry

55 gm laughng gas contains ---------gm N.

Chemistry

Cu+HNO3-Cu(NO3)2+NO+H2O

Chemistry

Can enzymes be called Polymers ?

chemistry

What is law of mass action

chemistry

what is the bond order of oxygen

Chemistry 101

what is CAH2 + H20

Chemistry

How many mL of 1.2 M HCl is needed to react with 5.8 g of Al(OH)3

chemistry

calculate the valume of 200g og h2

chemistry

why hexane dissolved in toluene?

Chemistry

What is the reaction of dilute HCl with Zn?

Chemistry

What is the mass of Na in 20g of Na2Co3

Chemistry

Convert 33°c and 43°c to Kelvin scale

Chemistry

What is the OH- concentration of a solution whose pH is 12.40?

Chemistry

How many mole of fe2o3 will be formed?

chemistry

how can we produce ethane from methane?

chemistry

Descibe the frasch process

Chemistry

how many atoms of S are in 9.2 moles of Na(SO4)2?

Chemistry

How do i calculate the pH of 0.0020mol/l HCl

Chemistry

What's the formula for Li2Co3+Co(NO3)3(aq) ->

Science - Chemistry

How many atoms in a diamond.

chemistry

How can diamond be formed artificially

CHEMISTRY

Why is I- a stronger reducing agent than F-?

chemistry

Is NH4+ po;ar or non polar?

Chemistry

How to convert 1.08g/ml to volume in ml?

Chemistry

Equation of Mg(OH)2 (aq) + KOH (aq) gives you what ?

Chemistry

What is Anta basic substance?

Chemistry

What is the oxidation state of Cr in K2Cr2O4?

Chemistry

How Many Atoms Are There In 10grams Of Carbon

chemistry

C2O4-- + I- + H+ ---> I2+CO2+H2O

CHEMISTRY

BLEACHING AGENT OF CHLORINE(Cl)

Chemistry

The solubility of copper sulphate at 0 C

Chemistry

Calculate normality of 27% H2SO4

chemistry

No. Of atoms in 12g of Mg is equal to

chemistry

How would you prepare 1. 100 ml of 0.20 M Ca(OH)2 from 0.50 M Ca(OH)2

Chemistry

pressure of Ne in sealed container

Organic chemistry

Nitrobenzene + KOH >>>>> ???

Chemistry

What is the pH of a 0.36% by mass HCl?(density=1.0 g/mL)

chemistry

What is the mass of 3.22mol of ethane

Chemistry

What is the ionic compound of SrMnO4

Chemistry

0.001N NaoH calculate the ph

chemistry

How many unpaired electrons for cr3+

chemistry

How I doing electrolysis of aluminium cloraed?

chemistry

Q: Find pH of 0.2 M of CH3COONa + 0.1M of CH3COOH?

chemistry

how to make 400 ml of 5% w/w h2so4

chemistry

why photosynthesis is considered as endothermic?

Chemistry

what is the OH- concentration of 0.08 M solution of CH3COONa

chemistry

why glycerol is used in cosmetics?

chemistry

ph of 0.001M H2X OF 50%dissosiation

Chemistry

How many meters are there in one picometer?

Chemistry

Why N2(g) has a lower boiling point?

chemistry

What is the pH of a weak acid solution that has an [H*] of 2.1×10^6 M?

unt

chemistry ---- 77=25 to the x power. Can anyone assist.

chemistry

Why is 5% NaOH insoluble in HCl?

chemistry

9276mL/s^2= gals/hr Is it 3.174x10^8

chemistry

How many moles of permanganate are in 5.93 L of a 3.81 M solution?

chemistry

what do you use a pipestem triangle for

Chemistry(Please respond)

A study of the system, H2(g) + I2(g) == 2 HI(g), was carried out. Kc = 54.9 at 699.0 K (Kelvin) for this reaction. A system was charged with 2.50 moles of HI in a 5.00 liter vessel as the only component initially. The system was brought up to 699.0 K and allowed to reach ...

Physics Urgent please help

At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F = -c_1*r*v , where c_1 is a constant. At time t = 0, a small ball of mass is projected into a liquid so that it initially has a horizontal ...

Physics pls anyone can help me? its urgent

At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F = -c_1*r*v , where c_1 is a constant. At time t = 0, a small ball of mass is projected into a liquid so that it initially has a horizontal ...

Urgent!

Project: Data Analysis The following chart lists the average low, average high, record low, and record high temperatures for the month of April in Denver, Colorado. Day Average Low Average High Record Low Record High April 1 32°F 58°F 6°F 78°F April 2 32°F 58°F -3°F 79...

chemistry

Online chemistry lab preparing standards help? I was told to prepare some standard for a chemistry lab and here where the instructions: Obtain a solution of known phosphate concentration. In this lab we will use (1.e-002M) potassium dihydrogen phosphate, KH2PO4. Note the ...

Chemistry

Really hard Chemistry question that I need help with. Any assistance would be really helpful.? When 0.5963g of a sample containing NaNO2 and some inert material is allowed to react with excess HSO3NH2, the volume of N2 gas produced is measured. The volume of N2 gas corrected ...

Managerial Economics- URGENT

The Blue Dragon Restaurant is a new Chinese Restaurant in town. As the only Chinese restaurant in the area, it faces the following daily demand curve: Q = 500 – 25 P Where Q is the number of meals it serves per day and P is the average price of its meals. The cost function ...

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