chemistry! URGENT

59,905 results, page 38

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

chemistry

The nuclear reaction Sn ¨ Sb + ? is an example of

chemistry

what are the fundamental particles in antifreeze

chemistry

Preceed the equation of CuSO4 + Fe

Chemistry

what is the empirical formula for a compund with 26.2 g N, 7.5 g H, and 66.3 g Cl?

chemistry

explain why iron is paramagnetic?

chemistry pH

calculate [H^+] and the pH of 0.025M of HNO3

chemistry

Is CF4 polar or nonpolar?

chemistry

what are structural examples of an aldehyde?

chemistry

lewis structure of HOCH2S-

Chemistry

How many valance electrons are there in [(C2H5)4N]+ ?

Chemistry

Hydrocinnamoyl chloride + AlCl3 --> ??

Chemistry

What is the pH of a 0.20 M HF solution that is 5.8% ionized at 25 Celsius ? A.4.45 b.0.70 C.1.93 D.1.23 E.1.40

chemistry

how many phases do suspensions have?

Chemistry

Name a few pharmacopoeias.

Chemistry

How many liters are in .005 moles?

chemistry

When 25.0 g of Zn reacts,how many L of H2 are formed at STP?

Chemistry

Co-ordination number of Cr in Cr(n^6 - C6H6)2 is

chemistry

how to prepare 24 μL of 5% H3BO3

chemistry

how many gram of h2 needed to react with 3.10 n2

chemistry

how many gram of h2 needed to react with 3.10 n2

chemistry

The number of moles of o2 in 45.0L} of 02} gas.

Chemistry

what happens to a battery when it is "recharged"

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