60,378 results, page 87
Determine the number of molecules of ethanol (C2H5OH) in 47.0 g. Can someone explain to me how to do this?
How many moles of O2 are needed to combine with 0.288 mol Al to give Al2O3?
what happens when sulphate ions are added to hydrochloric acid and then heated?
Which of the following molecules is polar? 1. CH4 2. BH3 3. NH3 4. CF4 5. H2
How could you recover sucrose or sodium chloride once it has dissolved in water?
what is the product of reaction K3(Al(C2O4)3).3H2O with KMnO4 in the present of H2SO4?
what happens when you place sodium hydroxide and water into a calorimeter?
Which of the following species would NOT function as an oxidizing agent? a. MnO4- b. Mn+2 c. H+ d. S e. Br-
why do elements within a group have similar chemical properties?
What is the equation of the preparation of K3[Al(C2O4)3].3H2O using Al2(SO4)3?
How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?
What is the density of carbon monoxide gas at 127 celcius and 763 mm Hg?
How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?
what two metals that will not generate hydrogen gas when treated with an acid?
how many grams of oxygen are formed when 500gof dinitrogen monoxide decomposes?
How much water is added to 5.28 grams of ethanol to get a concentration of 1.67M?
How many grams of CuSo4 x 5h20 to prepare 100 mL of a .10M solution?
A 1.50 M solution containing 25 Grams of Al(OH)3 would occupy what volume in liters?
What quantity of heat is required to warm 53.7 g of liquid water from 0°C to 100°C?
How do you calculate delta[S2O8 2-] in iodine clock reaction?
Determine the concentration of a dioxin solution whose percent absorbance is 0.40%
Rank the elements B, Al, Na, Mg from largest to smallest atomic radius. Would it be: Al, Mg, Na, B?
According to this chemical reaction, which is the number of grams of Fe produce from 14 moles of H2?
how can you fill a flask with pure oxygen without mixing it with air
what is the molar change in enthalpy when 100 g of ice is heated from -18.2C to -7.2C?(C=37.4 J/K*mol)
The two most common forms of elemental carbon are graphite and
What is the solubility of CaF2 in a buffer solution containing .30 M HCHO2 and .20 M NaCHO2?
Determine the density of chlorine gas at 22C and 1.00 atm pressure.
Quick Question - For a spontaneous reaction, ΔS°>0 and K >1. Is this always?
Have I balanced this equation correctly CN + NaOCL---OCN + NaCl
For which one of the following reactions is the value of H°rxn equal to H°f for the product?
What is the complete ionic equation for CaS(aq) +CuCl2(aq)=CuS(s)+CaCl2(aq)
How many grams of oxygen are required to react with 0.128 lead(II) sulfide?
How many kilojoules are needed to vaporize 3.00 liter of ethanol at 78 degree celcieus?
whatmass of (NH4)3SO4 is required to prepare 500cm3 of m/4 solution
how many grams are contained in 0.50 mol of each compound? HCl Na2SO4 C2H2 and Al(OH)3?
at what temperature does 16.3 g of nitrogen gas have a pressure of 1.25 atm in a 25.0 - L tank?
in 1D there are 4g of Zinc. How many moles of Barium Hydroxide are required?
what is the pressure exerted by 32g of 0xygen(O2) in a 22.0 L container at 30.0`C? What Law do I use?
What happens whena nucleus is stabilized by losing alpha particles?
how is calcium sulfate is prepared?what is the chemical reaction of this.
What would be the result if 5.0 L of hydrogen were burned with 2.0 L of oxygen in a closed containner?
Calculate the solubility (in g/L) of silver carbonate in water at 25°C if the Ksp for Ag2CO3 is 8.4 x 10^-12
Why is it not a good idea to use an antacid routinely? (two reasons)
Calculate the molar mass of baking powder (NH4)2CO3
does any one know how to write cis-2,3-dibromo-2-hexene formula? Please help!
What is the product of a grignard reaction of bromotoluene and co2 as starting materials?
What is the hydronium ion concentration of an acid rain sample that has a pH of 3.45?
is molar enthalpy affected if the system is a solid rather than a liquid
What three conversion factors are often used in mole conversions?
when 5.0 g of CaCl2 is dissolved in 50 g of water, how do you get the boiling temperature of 101.5 degree c
can the concentrations of reactant and products affect the directions of equilibrium constant
Which of the following groups of elements is arranged in order of increasing electronegativity? a. Br < Li < C b. K < Mg < O c. Na < K < N d. Mg < Li < C e. Ca < Cl < C
Which element can form more than one kind of monatomic ion? 1. a. Se 2. b. Sn 3. c. S 4. d. Sr
What is the pH of the solution created by combining 8.00 mL of the 0.10 M NH3 with 8.00 mL of the 0.10 M HCl? I found their moles= 8*10^(-4)
What volume of 12M HCl must be diluted to make 2L of solutioin with a pH of 4?
What are the missing nuclear symbols for the bombardment reation? 25/13Al + 30/15? >>> 30/15P + 1/0n
If 55.0 kJ of heat are added to 20.0 g of water at 20oC, what is the final temperature of the system?
What equation is used when talking about airplane cabin pressure?
Which of the following is a weak acid? A)HN03 B)H3P04 C)NH3 D)C03^2- E)OH
Write a balanced chemical reaction showing how the 4.99 g Sn dissolves in HNO3.
Which of these pressures is the lowest? 1.1 atm, 16.7 psi, 740 mm Hg, 111 458 Pa
What volume of SO2 will result from the complete burning of sulfer in 8L of oxygen?
Does Vapor Pressure decrease as intermolecular forces increase???
For the cell: C(s) C+(aq) B+(aq) B(s). Metal ______ is the "negative" electrode. is it C(s)
what particle is emitted from the nucleus during a proton and neutron decay?
how to find the volume of oxygen at STP from the Deoomposition of 10.8 g of mercuric oxide?
What is thhe pH of 500mL of solution containing 0.0124 grams of Ca(OH)2?
at what temperature would the sloubility level of 50 g KCL in 100 g H2O?
what happen when a solution of NaoH is add in drop and then in excess to Cacl
How much energy is released when 2.55kg of diethyl ether freezes?
What is the concentration (in % mass) of a solution in which you dissolve 200 mg of NaHCO3 in 1.0 L of water?
How many mL of 0.750 M HCl are needed to neutralize 14.89 mL of 0.350 M NaOH? ____ mL
What is the IUPAC name of the following compounds? CH3 I CH3CHCH2CH2CHCH2CH3 I CH2CH3
17.9 moles of NaOH in 500 ml of water? please tell me the answer
find the molarity of 9.0*10 (to the -4 power) moles of Mg(OH)2 in 1500 ml of water. what is the answer?
Is 10.0 mL of 0.10 M NH4Cl added to 10.0 mL of 0.10 M HCl a basic buffer? I think Yes. Right?
What is the name of the product when cinnamaldehyde and cyclopentanone undergo aldo condensation?
how do i write a procedure for making a 100mL of 0.5 M solution of sodium phosphate
What gas volume does the water have at a temperature of 100 and 1 pressure?
What is the solubility of RaSO4 in 0.1381M Na2SO4? Ksp = 4.3x10^-11?
how many grams of ammonium sulfate are needed to make a .25 M solution at a concentration of 6M?
Calculate the [H3O+] when 1.65 grams of KOH are dissolved in 500.0 mL of solution
what you would do to prepare 100.0g of a 3.5% solution of ammonium sulfate in water
an 56 Fe 2+ particle has how many protons neutrons amd electrons??? 56 2+ Fe Thanks Andy
How many significant figures are in each of the following a.234 b. 2500 c.0.0034. d. 12.00 e. 0.01010
How much heat does calcium oxide produce when dissolved in water?
Why is the sign for cathode positve and anode is negative in the galvanic cell?
calculate the volume of .100 M KOH required to titrate 50 ml of .15 M HCl
write and balanced equation for the formation of magnesium nitride from it elements
what volume of HCl gas is needed to neutralise 50 ml of 0.1M NaOH at stp?
what is the formula of a compuond formed by combining 50g. of element X and 32 g. of oxygen
Why must a balanced chemical equation be used when determining Keq?
How are the formation of aqueous solutions of sodium chloride and sucrose similar?
What is the concentration of OH– ions formed when 40.0 g of NaOH is dissolved in 250 mL H2O?
what is the molarity of a solution, if 12.0 g of KCl is dissolved into 500mL of H20
the main difference between isotopes of the same element has to do with the number of
What Causes the cap to pop off a bottle of orange juice?
How can one create an experiment that will deteremine the Ksp of a solid like Ca(OH)2
why should you be care when you heat your NacL solution to evaporate the water?