chemistry! URGENT

59,905 results, page 77

chemistry

why is the bond length an average rather than a fixed number ?

Chemistry

how many grams of hydrogen occupy 40 ml at 300.15 K and 710 torr?

chemistry

What mass of sodium bicarbonate reacts with 225 mL of 6.00 M HCl?

Chemistry

which one of the following cannot disproportionate cl-, clo3-, cl2, cu+, fe2+

Chemistry

How many milliliters of 2.50 M KI must be diluted to make 365 mL of 0.432 M KI?

chemistry

what is free energy for h2+br2=2hbr at 25 degrees celcius

chemistry

what is the normality of sodium carbonate of 55 grams in a solution of 4000 ml

Chemistry

What element forms an ion with an electronic configuration of [Xe] and a –2 charge?

Chemistry

What happens to the size of an atom when it becomes a negative ion? Why?

Chemistry

What happens to the size of an atom when it becomes a negative ion? Why?

chemistry 101

How intermolecular forces is responsible for the phases of matter?

Chemistry

What is the generic outer electron configuration for the alkali metals?

Chemistry

12 grams of salt dissolved in 650 mL of water has what concentration?

chemistry

How many grams of K2HPO4 are there in a teaspoon? Tablespoon? How do I figure this out?

Chemistry

How many moles of propane are contained in a 5.00 L tank at 450 torr and 25°C?

Chemistry

How do I change 3,3,4,4,5,5-hexamethyl-1-hexyne into it's molecular formula

chemistry

How many atoms of nitrogen are in the chemical formula N2O? A. 1 B. 2 C. 3 D. 4 I say A

Inorganic Chemistry

Name this compound: [Co(NH3)5Cl]Cl2

chemistry

describe the troubles of boilers when impure water is used

chemistry

how many atoms are in a sample of 175 g of sodium (Na)? 4.58 x 1024 or 1.42 x 1027?

chemistry

Calculate the molarity of 38.5 mL of 1.80 M HNO3 diluted to 0.130 L with water

chemistry

what are the three pure liquids produced by chemical reactions

Chemistry

Devise a test to distinguish between Cu2+ and Co2+.

Chemistry

Devise a test to distinguish between Cu2+ and Co2+.

Chemistry II

Devise a test to distinguish between Cu2+ and Co2+.

Chemistry

Devise a test to distinguish between Cu2+ and Co2+.

Chemistry

Devise a test to distinguish between Cu2+ and Co2+.

chemistry

compleat and balance this equation. Na2CO3+Mg3(PO4)2

Chemistry

Calculate the mass percent of a solution containing 10.5 of and 91.5 of H2O.

chemistry

calculate the amount (g) needed to make 25 ml of 0.1 m co(no3)2 6h2o

Chemistry

What's the linear density of body center cubic (0,1,1)of Molybdenum

chemistry

ph of 10 grams of sodium acetate and 100 mL of .5M acetic acid

Chemistry

What is the electronic geometry of a central atom with 4 electron pairs?

Chemistry 3A

how do i calculate the density of sulfur dioxide, SO2, at STP.

chemistry

What mass of chromium is contained in 50 ml of 6.55 M cr2(cro4)3? a. 85.2g b. 0.188g c. 68.1 g d. 17.0g

chemistry

What mass of chromium is contained in 50 ml of 6.55 M cr2(cro4)3? a. 85.2g b. 0.188g c. 68.1 g d. 17.0g

easy chemistry

what is the entropy of 10 molecules in a system of 100 boxes?

Chemistry 3A

a student weighed out 1.106g of KHP. How many moles was that?

chemistry

What is the pH of a saturated solution of silver hydroxide, given Ksp =1.56*10^-8

chemistry

Wat is the volume of a 200g object that has the. Density of 1.27L?

Chemistry

what is the magnitude and sign of the molar heat of vaporization of butane

chemistry

Wat is the volume of a 200g object that has the. Density of 1.27L?

Chemistry

What is the enthalpy of formation of 2C10H22+31O2=20CO2+22H2O

chemistry

How many different 5.00 d states does hydrogen have? please list them..

Chemistry

standard form of the equation KClo3->KCl(5)+02(g) for a project

chemistry

What's the equation written in a sentence for nh4no3(s)=n2o(g)+2h2o(g)

chemistry

When disaccharide beta is hydrolyzed, which monosaccharide units are produced?

AP Chemistry

Hi, what is the true cant hoff factor for MgO, and NaCl, and BeS. Thanks

chemistry

How much 6M HNO3 will be required to decrease the pH of 5000L solution of pH=9.6 to pH=3?

chemistry

can anyone give me 2 example of chiral molecules structure plz

chemistry

balance: CaCl2 + AgNO3 → AgCl + Ca(NO3)2

Ap chemistry

How to calculate initial concentration, preferably with a general example??

chemistry

what is the frezzing point of 21.6 grams of NiSO4 in 1.00 times 10^2 H2O

Chemistry

what type of reaction is AgF + CaCl2 --> AgCL + CaF2 ?

Chemistry

Why is AgCl not soluble in nitric acid while Ag3PO4 is?

Chemistry

at which temperature will water boil when the external pressure is 30 kPa?

Chemistry

Why is AgCl not soluble in nitric acid while Ag3PO4 is?

chemistry help plz

OH-OH-benzene ring-CH=CH-NH2 is anyone knows the name of this compound?

Chemistry

Rank the following atoms from highest to lowets energy: Ca, Be, Ba, C

Chemistry

(b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?

Chemistry

(b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?

Chemistry

(b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?

pharmaceutical chemistry

what are the conditions when cathartics are properly used?PLEASE HELP ME.

chemistry

balance net Ionic solution AgNo3 + NaOH

chemistry

What volume of 9.0Molarity of H2SO4 is required to react with 20.0g of NaOH?

CHEMISTRY

write the balanced ionic equation of K2CO3+HCl

Chemistry

on which stucture of C8H10 can we get mono-nitro product with nitration?

chemistry

calculate the # of moles of oxygen in 2 L @ 24 deg C & 750 torr

chemistry

how can i sketch a heating curve for benzene (mp=5.5 celius and bp=80.1 celeus?

Chemistry

What is the limiting reagent when 10.8 g water reacts with 4.7 g Na to produce NaOH and H2?

chemistry.....help plz

what is the density of methane gas at 20 degree and 115kpa?

Chemistry

How many grams of N2 are produced when 15.0 moles of NH3 react with excess NO

chemistry

how many valence electrons does copper (Cu), nickel (Ni), and cobalt (Co) have?

Chemistry

What is the molar volume of the gas ammonia (NH³) at STP?

Chemistry

What volume does 0.25 moles of oxygen gas occupy ar STP?

Chemistry

How many moles of H atoms are there in 21.66 g of Mg(OH)2? What is the mass of F (in g) in 8.03 x 1023 BF3 molecules

Chemistry

How come the formula for potassium peroxide is K2O2; I can't see how you'd get that...

Chemistry

What mass of Iodine contains same number of atoms as 50.0g of Cl?

CHEMISTRY

How do we determine whether a substance is pure in a chemical formula ?

Chemistry

what conditions are shared by cities that suffer from photochemical smog?

Chemistry

What is the molality of an aqueous solution that is 10.0% ethanol, C2H5OH, by mass?

chemistry

calculate the dimensions of a cube that contains 22.4L of gas at STP.

Chemistry

How many moles of Al(OH) are required to completely react with 2.75mol of H2SO4?

CHEMISTRY

Ni(NO3)2.H2O+2KSCN WHAT IS THE PRODUCT?? WHAT COMPLEX IS FORMED ?

chemistry

What is the maximum mass of H2O that can be produced by combining 90.8 g of each reactant

Chemistry/geology

Why is Fe3+ likely to precipitate in the presence of oxygen?

chemistry

Why is graphite more stable than diamond at 25˚C and 1 atm?

chemistry

what is the volume of a 3.00M solution made with 122g of LiF

Chemistry

How many grams of solute are present in 875 mL of 0.180 M KBr?

Chemistry

What is the mass of the carbon atoms in one mole of c3h8

Chemistry

What is the complete and net ionic equations for: Cu+Zn+2HCl--> ZnCl2+Cu+h2

chemistry

0.30M nh3 and 0.20M HCL calculate the ph of solution kb=1.8 × 10^-5

AP chemistry

what is the volume occupied by a mixture of 25.7 g of NO2 and 13.9g of SO2 at STP

Chemistry

How can I find the initial rate of formation of products {mol/((L)(s))}?

Chemistry

What is the pH at the equivalence point in the titration of 10.0 mL of 0.6 M HZ with 0.200 M NaOH? Ka = 7.0 × 10−6 for HZ.

Chemistry

What is 431804 and 10235.0 rounded to four significant figures?

Chemistry

dentify which bond you would expect to be the most polar. H-C H-F H-Cl H-S

Chemistry

If you have 1.90 mol of H_2 , how many grams of NH_3 can be produced?

Chemistry

If you have 1.90 mol of H_2 , how many grams of NH_3 can be produced?

chemistry

is putting gas in a vehicle a physical or chemical reaction

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