chemistry! URGENT

59,905 results, page 88

chemistry

How many grams of Li3N can theoretically be produced from 1.77 moles of Li? 6Li+N2 = 2Li3N

chemistry

capacity of the drink is 4.18 J/g·°C? (Assume that the heat transfer is 100% efficient.)

chemistry

why is the 5th ionisation energy(IE) of carbon so much larger than its 4th?

chemistry

How do you calculate the number of grams of solute in 0.250 L of 0.175 M \rm KBr?

chemistry

2C2H6(g) + 7O2(g) > 4CO2(g) + 6H2O(g) KCl(s) > K(s) + Cl2(g) is this balanced?

Chemistry

a mole of ethanol weighs only 46g; how many molecules does it contain?

Chemistry

Why does beta radaiation take place? If there is a website that can help me please post it. Thanks

Chemistry

Why would it be better to titrate a solution rather than just dilute it?

chemistry

1L soulution has a pH of 6 how many OH- would it tak eto make it a pH7 solution?

Chemistry

What is the total molar concentration of ions in a .200M solution of AlCl3

chemistry

was is the copper 2 carbonate's mass expected to do down after heating

chemistry

nitroglycerin (used medically as a vasodilator to treat heart conditions): {\rm C} 15.87\% {\rm H} 2.22\% {\rm N} 18.50\% {\rm O} 63.41\%.

CHemistry

The concentration of sodium chloride in an aqueous solution that is 2.23 M and that has a density of 1.01 g/mL is __ % by mass.

chemistry

what fraction of the total mass of an 56Fe atom is due to the electrons?

chemistry

What is the net ionic equation for calcuim ion and ammonium oxalate?

Chemistry

What difficulty may result if a chromatographic column is not placed in a vertical position?

chemistry

write a balanced equation for the reaction of aluminum with platinum and chloride.

Chemistry

What is the mass in grams of 4.556 x 10^30 lead atoms? Also the work.

chemistry

Determine the oxidation state for the second element in Zn3(PO4)2 Thank you!

Chemistry

How many ions are produced when a formula unit of Li2CO3 is dissolved in water?

Chemistry 2

How many grams of O2 will dissolve in 2.50L of H2O that is constant with pure O2 at 1.00atm?

chemistry

How much heat is released when one gram of toluene burned?

chemistry

write the balanced net ionic equation for this reaction Ba(OH)2+HCL-->

chemistry

wHAT IS THE MOLALITY OF A SOLUTION MADE BY DISSOLVING 43.3 GRAMS OF SODIUM CHLORIDE?

chemistry

How many grams of HCOOH are needed to make 3.7 liters of aqueous solution of pH=3.5?

Organic Chemistry

2 methyl-2-propanol is treated with 9M H2S04. What is the mystery product?

Chemistry

Predict the empirical formula of the ionic compound, Cs and C. How would I do this? Is it Cs_2C?

Chemistry

Find the average kinetic energy per molecule of He at 30 degrees C

chemistry

What mass of hydrochloric acid (in grams) can be neutralized by 2.7 of sodium bicarbonate?

chemistry

what is the net ionic equation for FeSO4 + KCl = FeCl2 + K2SO4?

chemistry

A 200 mL sample of 1.0 M nitric acid is added to 1.0 M water. What is the resulting pH?

chemistry

express liquid pentanol and gaseous oxygen as a chemical reaction

chemistry

how many milliliters of 6.00 M HCl are required to react with 60.0 ml of 1.96 M Al(OH)3? Al(OH)3(s)+3HCl(aq)-->AlCl3(aq)+3H2)(aq)

Chemistry

How many g of sodium nitrate do I need to make one Liter of 15% m/v solution?

Chemistry

What mass of hydrochloric acid (in grams) can be neutralized by 2.7g of sodium bicarbonate?

chemistry

How many moles of FeCl3.6H2O are required to make 10.00 mL of 1.50 M stock solution?

Chemistry

HNO3+NaOH --- H2O+NaNO3 What is formed in the solution besides Cu(OH)2?

chemistry

an atom of cesium cs has 55 protons 55 electrons and 77 neutrons true false

chemistry

Calculate the molarity for 25mL of H2C2O4 in a titration with 12.46mL of KMnO4

Chemistry

Is DrBob222 available tonight? Please let me know, I need some chem help.

chemistry prt 2

What is the net ionic equation of the reaction of MgCl2 with NaOH

chemistry prt 3

What is the net ionic equation of the reaction of MgSO4 with NaOH

chemistry

What is the final temperature of a 52 gram glass of water at 2.0 C if it absorbs 3.0 J heat?

chemistry

At what temperature (oC) will a gas sample occupy 6.1 L if it originally occupies 17.8 L at 27.1oC?

chemistry

net ionic equations of nitric acid with CO3 2- and with PO4 3-.

chemistry

what is the pH of a solution prepared by adding 20.00 mL 0f a 0.10 M acetic acid and 10.00 mL of 0.10 M sodium acetate

chemistry

What ions separate once added to water and how did the reaction occur?

chemistry

What ions separate once added to water and how did the reaction occur?

chemistry

What ions separate once added to water and how did the reaction occur?

Chemistry

How many moles of solute particles are present in 1 L of aqueous 0.08 M ethanol (C2H5OH)?

chemistry

Calculate the number of moles of CaCO3 in 3.20g of Calcium Carbonate.

chemistry

if 125 ml of H2O is added to 50 ml of 0.35 M NaCl, what is the molarity of the resulting solution?

chemistry

give 2 commercial or practical uses of this flame color phenomena.

Chemistry

How do you find unpaired electrons in a metal ion in CuSO4·5H20?

chemistry

what is the net ionic equation for manganese sulfide and hydrobromic acid?

chemistry

CuCl2(aq) and Na2CO3(aq) are mixed.Write the balanced equation for the process.

Chemistry

if you had one mole of m&ms, how many times could you cover the surface of the earth?

College Organic Chemistry

Why are fractionating towers in a refinery always tall?

chemistry

Determine the theoretical yield of CO2 if 250.0 g CaCO3 is heated.

Chemistry

Chlorine and phosphorus FOrmula ___________ ? Name ________ , _________ ?

chemistry

Chart of energy changes dissolving MgSO4, NaOH and CaCl2.

chemistry

50 ml of.10 M HNO3 is added to 50 ml of .2M CaCl2. Calculate amount of precipitate formed?

chemistry

At what temperature does the rms speed of Cl2 molecules equal 401 m/s?

chemistry

which element in period 4 has four electrons in its electron-dot structure ?

Chemistry

How would I find the moles of H+ if I have 2.0 M HCl and 2.0 M NaOH solution?

Chemistry

Need help with this-- 36. Balance this equation using coefficients. Fe + O2 --> FeO (the 2 is small) Thanks -MC

chemistry

How many grams are required to make 1.5 L of 3.0 M hydrochloric acid (HCl) solution?

chemistry

How many grams are required to make 1.5 L of 3.0 M hydrochloric acid (HCl) solution?

chemistry

how much energy is given off when 2.00 mol of CH4 are burned?

Chemistry

What is undergoing oxidation in the redox reaction represented by Fe Fe3+ Cl2 Cl- Pt

Chemistry

What is the temperature (in kelvins) at which 0.0260 mol occupies 1.00 L at 0.563 atm?

chemistry

write chemical equations for the reactions when you put each Al, Fe, Cu in 0.5M Al2(SO4)3

Chemistry

Compare and Contrast the motion of particles in a solid , liquid and gas?

chemistry

If you were given 0.026 milligrams of the compound, what would the mass of C in the sample be?

Chemistry

Need help anwering this: 43. Explain how the fission can be slowed in the nuclear reactor. Thanks -MC

chemistry please help

How many core electrons are there in a ground state sulfur atom?

chemistry

What is the wavelength of radiation that has a frequency of 6.912 × 10^14 s−1? and does the s-1 make a difference? Thank you!

Chemistry

What is the total kinetic energy of 1.70 moles of N2 at 30.0 celsius? What formula do I use?

chemistry

Calculate the pressure in the flask in torr, atmosphere, and pascals if ha = 114 mm.

chemistry please help

How many core electrons are there in a ground state phosphorus atom?

chemistry

How many grams of methane gas (CH4) are in a 15.8 liter sample at 1.2 atmospheres and 27°C

chemistry

Which of the following gases effuses the fastest at a given temperature? Ne CH4 Ar H2

Chemistry

what is the solubility of Pb(NO3)2, PbCl2, PbCrO4, and PbS from highest to lowest

chemistry

DETERMINE the enthalpy for the reaction CH4(g)+NH3(g)->HCN(g)+3H2(g)

Chemistry

Calculate the change in heat for the reaction SO2 + 1/2O2 --> SO3

chemistry

What is the new volume of the balloon, where the pressure is 0.25 {\rm atm} and the temperature is -20^\circ C .

College Chemistry

How many grams of BaCl2 are needed to make a 250mL of 15% solution?

chemistry

what is the chemical word equation for neutralizing acid spills? Please help me!!

College Chemistry

Calculate the pH of a 0.5 M Formic Acid (HCOOH) soln. ka= 0.00018

Chemistry

How much heat is required to melt 43.5g of ice at its melting point?

Chemistry

How much heat is required to melt 43.5g of ice at its melting point?

Chemistry

Calculate the standard enthalpy change of the reaction ClO(g)+O3->ClO2(g)+O2(g)

chemistry

How do you calculate the energy released when 1 mole of ethanol, C2H5OH, is burned?

Chemistry Gd 11

How many molecules of product would be produced from 10g of chlorine gas ??

Chemistry

How many calories would be needed to convert 8.0g of ice at 0C to steam at 100C?

Chemistry

Why does sulfric acid make the electrolysis reaction of H2 and O2 go more rapidly?

Chemistry

What mass of phosphine gas yields 3.5x10^-6 moles of PH3

Chemistry

Calculate the density of F2 gas at 27 degree Celsius and 1.00 atm pressure?

Chemistry

Dr. Bob get the use PV=nRT just stuck on setting up the problem help!

Chemistry

What is the pH of the solution obtained when 125 mL of 0.614M NaOH is diluted to 16.0 L with water?

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