chemistry! URGENT

60,378 results, page 38

Chemistry

What is the stoichiometry of elements in c2h6

chemistry

What volume does 16.0g of o2 occupy at stp

Chemistry

What is the chemical definition of a base?

chemistry

how can H2O and ethanol be separated

Chemistry

What is chemical name for Na2Cr2O2?

chemistry

ch3o what is functional group

chemistry

How many molecules in 8.221g PbO2?

chemistry

A Ca(OH)2 solution has a pH of 8.0. [H3O+] = 1.0 x 10^-8 and [OH-] = 1.0 x 10^-6 Determine [Ca(OH)2].

chemistry

What is the color of a neon light?

chemistry 103

what is electron cofiguration?

Chemistry

How do you find the partial pressure?

Chemistry

How many significant figure in 4.297*10^4

chemistry

how do you do electron dot diagrams?

Chemistry

How many electrons are in oxide and in oxygen

chemistry

what type of reaction is Al+S8=Al2S3

chemistry

how to change mg/mL into mmol/L?

chemistry

complete KH2PO4(aq)+KOH(aq)

chemistry

draw amino acid.

Chemistry Help Please

What is the OH- concentration of a solution that has a pH of 9.66?

Chemistry

How to find [H3O+] when i have [OH-]?

Chemistry

what are the pH and the pOH of 0.125M HCIO4?

Chemistry

Why B(CH3)3 cannot be Lewis Base??

Chemistry

How many stereoisomers are possible for threonine?

Chemistry help

hcl+mg(oh)2->mgcl2+h20

chemistry

how to prepare 0.216M of 37%benzaldehyde

chemistry

What are the total grams of iron

Chemistry

How many atoms are there in a 4.5 g sample of water?

Chemistry

How many atoms are there in a 15.0-g sample of KBr?

Chemistry

How many atoms are there in a 15.0-g sample of KBr?

chemistry

a. What is the net charge on valine at pH 1? b. at pH 7? c. at pH 14?

chemistry

what is the hcl of 2.00x 10 squared mL of 0.51

chemistry

How can you prevent or stop eutrophication

chemistry

specific heat capacity

chemistry

how to calculate PH and POH {OH-) = 1.0 *10 to -11 power M?

Chemistry

The PH of a 1.3M HF solution is 3.18. What % of the acid ionized?

Chemistry

a 2.0M solution of Hbr will have what pH?

chemistry

chemical structure CH3C5H9

chemistry

How many molecules are in 25 grams of NH3

chemistry

How many molecules are in 25 grams of NH3

chemistry

How do you calculate molarity of NaOH?

Chemistry

What alkane effuses at 1/5 the rate of He

chemistry

How Many H bonds in Oblate Polyhedra?

CHEMISTRY

How to make a 2% iron solution?

Chemistry

Is phosphate PO3 or PO4?

chemistry

what is the volume of a sphere that has a radius, r = 3 in.

chemistry

the equation n2+3h2 2nh3

chemistry

2180 nanometer =?meter

chemistry

why does ammonia reacts with acid?

chemistry

Zn salts are colour less.Why?

CHEMISTRY

HOW MANY MOLES OF LITHIUM IS 2.69XE9

CHEMISTRY

HOW MANY MOLES OF CALCIUM IS 139g OF Ca?

CHEMISTRY

HOW MANY GRAMS OF CALCIUM IS 3.08 MOL OF Ca?

Chemistry

Why is the use of tin limited?

Chemistry

what is 39.5 grams of HCl in moles?

chemistry

how to find percent yield

chemistry

How many H atoms are in 7.52grams of C3H8?

chemistry

what is the name of the compound C2H4?

Chemistry

What are the products of Ba(NO3)2(aq)+K2CO3(aq)?

Chemistry

how many moles of Cl in 2.7 mol CaCl2

Chemistry

What is the hybridization of phosphorous in a P4 molecule

chemistry

why do gases mix in any proportion?

chemistry

what is the lewis dot structure for BN

chemistry

complete and balance Co(OH)3(aq)+Na2CO3(aq)

Chemistry

How many moles of H2 can be produced? (2.14 mol)

Chemistry

how do you balance equations to get the formula?

chemistry

What is the formula for barium chloride

Chemistry

How many grams of are required to react with 29.0?

chemistry

How many moles are in 4.80 grams on SnO2?

Chemistry

What is pH of pure water at 70o C

chemistry

Fe(s) +Pb^2 (aq)---->Fe ^2+ (aq) +Pb(s) which reactant has been oxidized

chemistry

LiCIO4(s)=LiCI(s)+2O2(g)

chemistry

how many molecules are in 0.89 moles of ammonia

chemistry

how many molecules are in 0.89 moles of ammonia

Chemistry

What is the Oxidation number of O8O4?

chemistry

what is evidence of exothermic rection?

Chemistry

Calculate pH of NH4OH which is 1%ionized

chemistry

what is the ionic equation for 2HNO3(aq)+Ba(OH)2(aq)

chemistry

what is the value of [OH-] in a 0.730 M solution of Sr(OH)2?

Chemistry

Calculate the pH of 30.0 mL of 0.025 M NaOH

Chemistry

Calculate the pH of 30.0 mL of 0.025 M NaOH

Chemistry

What is the molarity of potassium nitrate?

chemistry

intermolecular forces in caffeine

chemistry

how may grams are in 6.1 moles of AIN

CHEMISTRY

What is oxygen extensive properties?

chemistry

what's the formula for specific heat

Chemistry

Which ion has larger radius O2- or F 1-?why?

Chemistry 3A

how do we write a nuclear symbol?

Chemistry..

How many O atoms are there in a mole O2? My answer: 6.02*10^23

Chemistry

What is the density of 3.40 liters of hci

chemistry

6.85ml of 0.015M SN2+

Chemistry

What is the voltage for CuCl2 + Zn ZnCl2 + Cu?

chemistry,science

how were volcanoes formed ?

chemistry

why do we perform tritation many times ?

chemistry

what can be the source of error in titration?

CHEMISTRY

What is the mass of 1.75 x 10^24 molecules of NH3?

Chemistry

ow many molecules are in 0.26 mol of CO2?

Chemistry

Name this compound: H2O2

Chemistry

How many moles are 400 g of Ca(HSO4)2

chemistry

how methane is produced or where it comes from?

Chemistry

What are the physical propertise of Air

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