chemistry! URGENT

60,827 results, page 59

chemistry

calculation of molarity for RMgX after repair it.

chemistry

when we make CH3MgCl,we have to calculate its MOLARITY.how!

chemistry

Determine the heat of combustion of acetylene (C2H2).

CHEMISTRY

Determine the heat of combustion of acetylene (C2H2).

CHEMISTRY

Determine the heat of combustion of acetylene (C2H2).

CHEMISTRY

Determine the heat of combustion of acetylene (C2H2).

CHEMISTRY

Determine the heat of combustion of acetylene (C2H2).

chemistry

Idont know a search in jacs or other juornals

Chemistry

Determine the prcentage composition of the compund HCl?

chemistry

why solution always prepared in HCl and not in HNO3 ?????????

Chemistry

Determine the pH of 263 ml of solution which has [NH 4I] = 0.300 M. Kb = 1.74 × 10-5 for NH3(aq)

Chemistry

Determine the pH of 263 ml of solution which has [NH 4I] = 0.300 M. Kb = 1.74 × 10-5 for NH3(aq)

Chemistry

How do you work the problem 1:10 dilution of 75mL of 2.5M H2SO4

chemistry

How do you balance the equation NH3 + CuO > Cu + H2O + N2

Chemistry

Calculate the[OH-] of a solution of 0.1861M CH3CH2CH2NH3CL if Kb= 5.1*10-4 for CH3CH2CH2NH2

chemistry

how many iron atoms are in 0.550 mol of Fe2O3?

chemistry

4. How would you convert 9.0 grams of water to moles?

chemistry

how many mL of 0.50 M ammonia would be needed to react with 1.0 L of 0.75 M HClO4

Chemistry

Fe(NO3)3+LiOH -> Fe(OH)3 + LiNO3 I cant get this balanced please help!

chemistry

What is the lewis dot diagram for menthol? (C10H20O1)

chemistry

How many milliliters of 3.60 {\rm M} {\rm HCl} are required to react with 140 {\rm mL} of 1.60 {\rm M}{\rm Al}({\rm OH})_{3}?

chemistry

if atoms give off light, why don't they glow?

Chemistry

What is the Delta H value for water that is evaporation in Joules?

chemistry

how many grams of NH3 are in 250 ml of a 20% (w/v) ammonia solution

chemistry

What are the oxidation numbers for the elements in the compound C2H5COOH?

Chemistry

How many grams of bromine can be obtained by the decomposition of 92.0 of MgBr2?

chemistry

what solution of sugar in water has the highest molarity?

chemistry

NaOH(aq)+H3PO4(aq)¨Na3PO4(pq)+H2O(l) Please help.

Chemistry

What is the pH for the potassium propionate solution at the equivalence point?

chemistry

what is the reagent responsible for the formation of hydrogen sulfide?

Chemistry

What is the [H+] of a 0.1 M malonic acid with a Ka of 10^-9 solution? I thought it was just (Ka x Ca)^(0.5), but that doesn't get me a pH of 5.

chemistry

how can i know whether solution is acidic or not and then what type of acid?

Chemistry

HC2H3O2 + CH3(CH2)4OH (H2SO4)=?

chemistry

SiH3- planar or pyramidal geometric shape?

Chemistry

How many grams of H2SO4 are contained in 4.5L of .30 N sulfuric acid?

Chemistry

Use the standard reduction potentials in volts: Cu^2+ --> Cu+ +0.16;

chemistry

2.50x10 to the second power mL of 0.100M NaBr

Chemistry

How do you draw the lewis strusture for Cyanogen(C2N2)

Chemistry

Determine the solubility of FeS at 25 degrees Celsius

chemistry

What is the molarity of hcl is 35 ml is neutralized. By 500 ml of M NaOH?

chemistry

how much of 0.5normal fas is equal to molar

chemistry

The reactivity of the alkali metals increases in the order? A. Na, K, Li B. K, Na, Li C. Li, Na, K D. Li, K, Na

chemistry

how many moles of NaOH (aq) is contained in 10.0mL of vinegar?

Chemistry

What happens to the rate of a reaction if the temperature is decreased and why?

chemistry

what are the factors that determine the rate at which a soulute dissolves

Organic Chemistry

how to calculate specific observed rotation?

chemistry

15 GREM OF C6H12O6 WILL PRODUCE HOW MUCH CO2?

Science (Chemistry)

How many significant digits are in the number 63,000.0?

Chemistry

I don't know why on earth I don't remember how to do this, but I can't, and it's so simple. Calculate [H+] and [OH-] of a solution with a pH of 9.7 Thank you.

Chemistry

How many grams are in 8.2x10 to the power of 22 molecules of Fe2O3?

chemistry

How many molecules are in 0.495 mole of lactic acid?

chemistry

how do you calculate the normal boiling point of PCl3

chemistry

write a neutral specie which is isoelectronic chlorides.

chemistry

State 4 reason why ais is classified as a mixture.

Chemistry

What mass of CO2 could be formed from the reaction of 16 g of CH4 with 32 g of O2 ?

chemistry

What is the mass number of an atom of potassium that has 20 neutrons?

CHEMISTRY

ASSIGN FORMAL CHARGES TO FOLLOWING STRUCTRE, H-N-C-H3

Chemistry

Find the [OH-] of .196 M NaOH and .262 M NH4Cl

chemistry

150 ml M/10 Ba(MnO4)2 in acidic medium can oxidise what?

chemistry

10.3 gm NaBr is solved in 50 ml of water. What will be the molality of solution?

Chemistry

Find the strength of 2.45 gm of (H2SO4) in 250 ml of the sol.

Chemistry

Will ph value of water be same at temp 25°C & 4°C? Justify it.

Chemistry

Will ph value of water be same at temp 25°C & 4°C? Justify it.

Chemistry

Will ph value of water be same at temp 25°C & 4°C? Justify it.

Chemistry

Calculate the number of C, H and O atoms in 1.75 g squaric acid. :)

College chemistry

is dispersion force the strongest IM for Cl2

Chemistry

How to separate acetic acid from aqueos solution.

Chemistry

How to separate acetic acid from aqueos solution.

chemistry

complete and balance the following : Zn(s)+HCl(aq)-> Zn(s)+Cu2+(aq)->

chemistry

calculate when 7.14 of butane reacts with excess oxygen

chemistry

In beta decay, why does the atomic number increase by 1?

Chemistry 111

what is the molar mass of Butane,C7H10?

Chemistry

How calculate concentration by using molecular weight.

Chemistry

Hi. How would I determine the rate constant of a reactant?

chemistry(:

What happened to the outer electrons of H and O to form water?

Chemistry

How many moles of H atoms are there in 33.4282 grams of C2H4Cl2?

chemistry

Calculate the ph for ch3co2h,3% dissociated at a concentration of 0.02 mol dm-3.

chemistry

a compound used to manufacture mustard gas is ?

chemistry

bond angle and hybridisation of oxygen in water is ?

Chemistry

give the reaction when lead nitrate is heated

chemistry

What causes the calcium and ATP concentrations to decrease?

chemistry

why doesnt sun attract earth towards it

chemistry

Name the substances which decolourise bnromine water

Chemistry

convert 33 miles/hour to meters/minute

chemistry

how do you calculte the volume of a single drop of water??

chemistry

how to draw newman projection for different structure

chemistry

balance the equation:C2H6 + O2 = CO2 + H2O

AP Chemistry

What is the weight of 6.3 × 10 21 atoms of phosphorus? Answer in units of g

chemistry

convert 1.5ft^3 to liters show work

chemistry

what is 124.5 when rounding to the 3rd significant figure?

Chemistry

What is the empirical formula of a hydrocarbon that contains 89.94% C by mass?

Chemistry

What is the empirical formula of a hydrocarbon that contains 89.94% C by mass?

Chemistry 12

How do we determine the specific gravity of a solution? and what unit is it in?

Chemistry

What is the frequency of light having a wavelength of 5.6 micrometers?

Chemistry

Define the terms 'weak acid' and 'catenation'

Chemistry

How many grams does 0.500 moles of CuBr weigh?

chemistry

how many carbons in nonane are in the sp2 hybridization state

Chemistry

how many valence electrons does a carbon radical possess?

chemistry

find the density of ethyl alcohol if 80.0 cm^3 "weighs" 63.3g.

Chemistry

What is the oxidation number of chromium in K2Cr2O7? I know that K = 1 O=-2 so 7*-2=-14 I do not know what to do now. Thank you for your help!

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