chemistry! URGENT

60,412 results, page 77

chemistry

Calculate the pH of an Aqueous 3.8 x 10^-5 M solution of barium hydroxide. I need help.

chemistry

chemical formulae which ends with ite,ate and ide

chemistry

calculate the density of a liquid if 47.9mL of it has mass of 49.06g

chemistry

How many liters is 5.8 mole of neon at STP? Show work

Chemistry

When hydrogen reacts with a metal, does it form a cation or an anion?

Chemistry

What is the density of a solution of 9.0% Calcium chloride dissolved in water?

chemistry (lab)

how or where does the hat energy produced by the candle come from ?? help me!

Chemistry

What mass of KBr is required to prepare 8.oo L of .400 M solution?

organic chemistry

how to find ethyl benzoate from methyl benzene

chemistry

Calculate the molality of CsCl in a 19% by mass aqueous solution.

Chemistry

How can you predict the heat of combustion for a substance with no carbon atoms?

chemistry

a piece of copper has a mass 740kg,what is the units in grams

Chemistry

How many moles of H_2 are needed to produce 13.27g of NH_3?

science

what is the best way to study for my chemistry test tomorrow

chemistry

chemical formula for potassium hydrogen sulfide? is it KHS?

Chemistry

What is the reactant when sugar is mixed with water? Also, what is the product?

chemistry

What is the valency and outer most electrons in scandium to zinc?

Chemistry

Would Ti3(PO4)2 be titanium phosPHATE or phosPHIDE

chemistry

how do you name halogens as a functional group. like CH3-Cl

Chemistry

What is the pH of a 0.50 M solution of NaNO2 if the Ka of H20x = 4.5 x 10^-4. I know that you use the Ka to find Kb and solve from there, but why?

chemistry

Identify a haloalkane and describe the manner in which it functions as an anesthetic.

chemistry

balanced equation mg+ pbcl2---mgcl2+pb F+NaBr--FBr+Na

Chemistry

if there are 8.3grams of Mg used, how many moles of MgO can you expect to be produced?

chemistry

A sample of oil has a mass of 65g and a volume of 80.0 mL. What is the density?

chemistry

How many sodium ions are present in 325 mL of 0.850 M Na2SO4?

chemistry

How many photons are produced in a laser pulse of 0.324 J at 631 nm?

chemistry

how much heat is released when 42.3 grams of ammonia is produced?

Chemistry

What mass (g) of KHP is required to neutralize 10.00 mL of 0.1092 M NaOH?

chemistry

If i have .0030M BaSO4 how do I calculate the moles of sulfate?

Chemistry

The volume in cubic meters of a 141541 kg blue whale?

chemistry

What is the mass (in grams) of 9.81 × 1024 molecules of methanol (CH3OH)?

chemistry

Why would benzene boil at 100C instead of 80C?

chemistry

what is the balanced molecular formula and state for this equation Mg+Cr(C2H3O2)3=

chemistry

how would you separate a mixture of NaCl, Fe pellets and water

chemistry

how would you separate a mixture of NaCl, Fe pellets and water

chemistry

2C6H6(l) + 15O2(g) --> 12CO2(g)+ 6H2O(g) how to calculate the ratio?

Chemistry

How many moles of KBr are present in 120mL of a 0.290M solution?

Chemistry

Why do acids and bases form ions when they dissociate in water

chemistry

5.22kg of H2 reacts with 31.5kg of N2, which one is the limiting reactant?

chemistry

How many grams of C3H18O2 contain 7.9 e25 atoms of Carbon?

chemistry

how to find ph of aqueous solution if your only given the concentration

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

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