chemistry! URGENT

60,378 results, page 85

chemistry

What functional group(s) must be present in a monomer of a condensation reaction?

chemistry

What functional group(s) must be present in a monomer of a condensation reaction?

chemistry

sir i didn't understand the first i made it more detailed for u though ty

Chemistry

Manganese has the oxidation number of +5 in ______ . . (A) [MnF6]3– (C) [MnO4]2– (B) Mn2O7 (D) [Mn(CN)6]–

chemistry

What is the bond order of OH- and OH+? I tried to solve it but couldn't so Im about to give up. Help me please.

chemistry

My best answer would be: HCl]4[O2] / [H2O]2[Cl2]2 Is this correct?

chemistry

Why can two different elements have similar atomic masses?

chemistry

where on the periodic table are most natural radioactive nuclides located?

chemistry

So if there is Ag2CrO4, the metal wire, in a SCE and Hg2Cl2 which will be the anode and cathode?

chemistry

how do you draw a calomel electrode. Does it require two or one cells?

chemistry boiiii

to find the number of moles is it... mole=mass/grams

organic chemistry

what's the relative cost of petrochemicals to the materials they have replaced??

Organic chemistry

How many stereogenic carbon atoms does the alkaloid morphine have?

organic chemistry

How many stereogenic carbon atoms does the alkaloid morphine have?

chemistry

If K = 1.8 x 10 for HC H O (aq) „\ H (aq) + C H O (aq), and 100 mL of aqueous solution has [HC H O ] = 0.50 M, [H ] = 0.090 M, and [C H O ] 0.0010 M, is the system at equilibrium?

Chemistry

im curious if i post my work on here will anyone check it for me to see if it is right?

chemistry

Calculate the number of english tons(2000 lb per ton) in 6.03 lb

chemistry

f the pressure of 2 L of a gas at STP doubles, the new volume would be

chemistry

Why do gases deviate from ideal behavior at very high pressures

chemistry

what change occurs when sucrose solution is heated?Give evidence.

CHEMISTRY

WHAT WOULD BEST TO MEASURE 18ML OF ETHYL ALCOHOL ACCURATELY

Chemistry

Why isn't hydrochloric acid used to both dissolve and precipitate silver?

Chemistry 101

How many kg of chlorine are in 23kg of each of the following? CFCl_3 C2F3Cl3 CF3Cl

Chemistry

Given that for ethanoic acid pKa=4.75, calculate the pH of sodium ethanoate 0.1M.

CHEMISTRY

CALCULATE THE FORMULA UNITS IN 285G OF IRON (111)PHOSPHATE?

Chemistry

What is the net ionic equation for.... 1 Ca(NO3)2 + 1 K2CO3 ==> 1 CaCO3 + 2 KNO3

Chemistry

An object has a mass of 128g and a volume of 27cm3. Find the density.

chemistry

Rank the following from Longest to Shortest bond length: i) H-F ii) As-As iii) NC iv) O=O v) Cl-Cl

Ap Chemistry- Organic

How does polairty of isopropyl alcohol differ from polarity of water?

chemistry

can nuclear chemists convert elements into unstable ones? If so how?

Chemistry

How is the temperature change in an alcohol related to how storng the intermolecular forces are?

Chemistry

a bottle of a soft drink looks pure, but it is not, how could you demonstrate that it is a mixture? thanks

chemistry

Which of the following is an acidic oxide? a. ) NO2 b. ) H2O c. ) K2O d. ) NaCl e. ) Ca(OH)2

chemistry

All gases are in soluble in water.Whether it is ture or false

chemistry

What is the chemical composition of ozone, carbon dioxide, salt and water

11th grade chemistry

whats the ionic name for strontium iodide

chemistry home work

2 examples on sediment plz reply fast...

chemistry

How many moles of gas does it take to occupy 120L at 2.3atm and 340K

chemistry

Why is water a liquid but carbon dioxide a gas at room temperature.

Chemistry

If you add hydrochloric acid (HCl) to magnesium (Mg) metal, what will you observe?

Chemistry

What is the group 3A element that forms the most basic oxide? I thought it was TI, why isn't it? thanks

chemistry

What is formed when Na2S is added to a beaker containing amonnia solution?

Chemistry

why do we use different instrument to make absorbance and fluorescence measurments?

chemistry

what 3 groups do scientists put elements into in the periodic table?

Chemistry

What would happen if you mixed sugar and sulferic acid together?

Chemistry

If I was to react a borax solution with a sulphuric acid to neutralise it, what products will I get?

chemistry

Calculate the number of C, H, and O atoms in 4.50 g of glucose (C6H12O6), a sugar. help please?

chemistry

What happens in terms of energy and stability when a covalent bond forms?

chemistry

what is the electron configuration of a calcium atom whose atomic number is 20

Chemistry -- plz help

how do i calculate the percentage of ionic character .. ex. H-O = electronegativity difference = 1.2

chemistry

What mass of iron contains the same number of atoms as 70.05 g of nitrogen?

chemistry

where would you find silicon dioxide outside a chemitry lab?

chemistry

where would you find silicon dioxide outside a chemitry lab?

chemistry

how do i draw lewis structures for: CH2Cl2, CH3OH and NH3 .. plz help

chemistry

how many electrons are shared by two atoms that form a triple bond?

Bobpursley+Chemistry

Hey Can you take a look at my previous post that you replied on.

college Chemistry

Ok this is the question... Complete the combustion of butane... CH3CH2CH2CH3 + O2 ====> ____________

chemistry

how do i balance Cu+O2 arrow(i don't know how to make one)CuO. And what is the reaction type.

chemistry

What is the relationship between the molar mass of Ne, Ar, Kr, and Xe and the melting points of their solids?

chemistry

If a satellite orbits the earth at a velocity of 3.2 x 10⁶ km/hr, this would be the same as how many ft/s?

Chemistry

Suppose we want to know whether on mixing h2o2 with fe+2,the oxidation of fe+2 to fe+3 will take place or not.

chemistry

symbol used in a chemical equation to indicate the phrase with react with?

Chemistry

Is rate of evaporation directly or inversely related to molecular weight

Chemistry

A scientist has 0.46mL of a solution. How would she convert this volume to microliters?

chemistry

how many grams of solid NaOH are required to prepare 200 ml of a .05 M solution?

chemistry

how many milliliters of 5M NaCl are required to prepare 1500 ml of .002M solution?

organic chemistry

what is the first and second step in a alkene halogenation reaction

Chemistry

Name an isomer of pentane (that is not cyclic) and write down its structure.

Chemistry

What are some advantages of using nuclear power as a source of electricity?

Chemistry

Are these compounds organic, if not what are they? Kmno4 CH3OH C6H6 PdC12 CH3CO2H

Chemistry

Why is the benzene molecule represented as " a flat cyclohexane with a ring inside?"

CHemistry

Why do cis and trans isomeric compounds exhibit different properties?

Chemistry

Name an isomer of pentane (that is not cyclic) and write down its structure.

Chemistry

i need help. Calculate the pH of a 0.24 M CoCl3 solution. The Ka value for Co(H2O)63+ is 1.0 10-5. how do u do these with like the Cl there?

Chemistry

Why does the simplest ketone have three carbon atoms and no fewer?

Chemistry

Name the following: CH3CH2CH(OH)COOH CH3OCH2CH2CH3 C4H9O(C=O)CH3

Chemistry

What would be the molality of a solution made up of 75cm^3 of water and 0.21 g of NaCl?

Chemistry

How do you determine the number of moles in 78.6 grams of carbon tetrachloride (CCl4) ?

Chemistry

In paper chromatography, why must the starting line be drawn with pencil? Thanks!

chemistry

would the method of spectrophotometry or redox titration be a more accurate?

intro chemistry

can someone help me find out what CH3OCH2CH2CH3 is and what it does. Is it an alkane aldehyde or etc. thanks

chemistry

why do you think the statue of liberty was made of copper instead of zinc

chemistry

why do lemon juice keeps apple slices from turning brown? thanks.

Organic Chemistry

How many peaks would be expected in the 1H NMR spectrum for mesitylene? A. 2 B. 6 C. 3 D. 12 E. 9

Organic Chemistry

Which of the following would have the lowest stretching frequency A. C=C B. C-O C. C=O D. N=O E. C-H

Chemistry

Why are alloys used to make coins rather than the pure metal?

****CHEMISTRY****

Can you see the particles in a coloid, suspension, and solution? Can any of those be filtered?

Chemistry

How can Ammonia be a base since it lakes a hydroxide ion? thank you so much

Chemistry-help-thanks

Ethanol is an organic solvent. In general, will it dissolve ionic compounds?

Chemistry

Calculate the solubility of silver chloride in a solution that is 0.140 M in NH3.

Inorganic chemistry

What change in coulombs, is required to deposit 0.301 g Cu(s) from a solution of Cu^2+(aq)

Chemistry

Oxidation Numbers AlH(SO4)3 and the overall charge is -2 BaCr2O7

chemistry

If a block of wood with the length 1.05 m, height 5.24 cm, and width 3.36 cm and a mass of 2.56 kg what is the density?

Chemistry

Determine the correct oxidation number assigned to carbon in CaCO3

Chemistry

What weight of NaOH would be required to prepare 3000ml of a 2.5M solution?

chemistry

How do you balance this redox rxn? Al + HNO3 ----> Al(NO3)3 + NH4NO3 +H2O

Chemistry

How many kilojoules are required to change 85g of water at 25 C to steam at 100 C?

science/chemistry

what is the basic physical principle that chromatography is based upon?

science/chemistry

what is the basic physical principle that chromatography is based upon?

chemistry

what is the net ionic equation for calcuim chloride + sodium carbonate

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