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Chemistry
Page 46
Questions (96,980)
15.0g of potassium trioxochlorate(v) was crushed and heated with about 0.1g of manganese(iv)oxide, calculate the mass of
4 answers
asked by
Favour
866 views
Balance the redox reaction Zn+NO3^-=Zn^²+ +NH3
4 answers
asked by
Samu V Jadhao
2,396 views
H2+1/2O2=H2O(1)+285.8kj
6 answers
asked by
anbesa
2,484 views
How many Cu+2 ions are in 5.33 mol of CuCl2?
I did this so far: n-> 5.33 mol Ncu-> ? ions M= 134.45 g =5.33 mol x (602x10^23
4 answers
asked by
Sunny
1,053 views
HF hydrolyzes according to the following equation: HF(aq)+H2O(l)<-> H3O+(aq)+F-(aq)
When 0.0300 mol of HF dissolves in 1.0 L of
5 answers
asked by
alison
2,398 views
The question is asking to calculate the overall energy change in the combustion of ethane (C2H6). This is what I have done:
The
4 answers
asked by
Vikki
2,480 views
At high temperature, 0.500 mol of HBR was placed in a 1.00L container where it decomposed to give the equilibrium:
2HBr <==> H2 +
5 answers
asked by
Anonymous
2,532 views
How many grams of nitrogen are required to react with 2.79g of hydrogen to produce ammonia?
A) 25.8 g B) 13.0 g C) 78.2 g D) 38.7
4 answers
asked by
Anonymous
5,548 views
how many covalent bonds are there in methane molecule
4 answers
asked by
fathimah
1,799 views
What is the equilibrium constant for the reaction: Si + O2 <-> SiO2 ?
Is the answer just [SiO2]/[Si][O2] ?
4 answers
asked by
Anonymous
1,788 views
A car uses 114 g of petrol to travel one mile.
Calculate the mass of carbon dioxide produced when this car travels one mile.
5 answers
asked by
Reece
1,283 views
Assuming the final solution will be diluted to 1.00 , how much more should you add to achieve the desired pH?
Information:
4 answers
asked by
Ashley
6,392 views
How do you determine if an element or compound is Aqueous, Solid, Liquid, or Gas just looking at a periodic table. Also, how do
5 answers
asked by
Anthony Clay
2,439 views
Calculate the pH after 0.12 mol of NaOH is added to 1.00 L of 0.60 M HF and 1.06 M KF
4 answers
asked by
michele
1,053 views
A 50.0 mL sample of 0.200 M AgNO3(aq) was allowed to react with an excess of NaCl(aq). The AgCl precipitate from the reaction
4 answers
asked by
Diggs
1,198 views
a sample of gas is collected over water at a temperature of 35 degrees celcius when the barometric pressure reading is 742.0
4 answers
asked by
Jimmy
1,782 views
A chemist heated a sample of steel wool in a burner flame exposed to oxygen in the air. He also heated a sample of steel wool in
4 answers
asked by
Anonymous
1,578 views
The PH of an aqueous solution of NaCN is 10.38. What is [CN-] in this solution?
4 answers
asked by
ChemHurts
1,301 views
write the balanced half reaction for the reaction of Al3+ to Al
(3+ is the oxidation state) i don't understand... wouldn't you
4 answers
asked by
Anonymous
3,313 views
In the reaction CaO(s) + SO2(g) ---> CaSO3(s)
(Hint: try drawing the Lewis structures of SO2 and SO32-) a. ) Ca2+ acts as a Lewis
5 answers
asked by
Anonymous
3,763 views
What mass of solid aluminum hydroxide can be produced when 50.0mL of .200 M Al(NO3)3 is added to 200.0 mL of .100 M KOH
4 answers
asked by
Anonymous
3,682 views
when pure sodium hydroxide is dissolved in water , heat is evolved in a laboratory experiment measure a molar heat of solution
4 answers
asked by
jim
1,747 views
Oxygen is a gas at room temperature and a liquid below -218 degrees centigrade. What state of matter is it at -60 degrees
5 answers
asked by
a
364 views
How to calculate the amount of heat released when 15.0 g steam at 117°C is converted to ice at -10°C
4 answers
asked by
cristy anne jiemenez
479 views
How many grams are there in 2.5 mol MgCl2?
4 answers
asked by
luna
903 views
(1) MgCO3(s) ⟶ MgO(s) + CO2(g) ΔrH = 118.1 kJ mol−1
(2) Mg(s) + 12O2(g) ⟶ MgO(s) ΔfH =−601.7 kJ mol−1 What is the
5 answers
asked by
jhope
2,055 views
Using the following bond energies, calculate the molar heat of hydrogenation, ΔHhydrogenation, for the conversion of C2H2 to
4 answers
asked by
Lyndsay
3,790 views
A student collected concentration data to determine the rate of the decomposition of N2O5 to NO2 and O2. The data were recorded
4 answers
asked by
pre
1,909 views
A 8.07g sample of impure Ag2O decomposes into solid silver and O2(g). If 395mL of O2(g) is collected over water at 25 degrees
4 answers
asked by
Kim
1,416 views
what is the relative atomic mass of a silicon containing ore with 92% 28'Si,5%29'Si and 3%30'Si?
4 answers
asked by
Jonathan
556 views
What is the solute-solvent interaction between silver nitrate in water?
4 answers
asked by
Someone
720 views
What volume of coffee (pH=5.0) would be required to have .25 moles of H3O+ ions? (must be two steps)
4 answers
asked by
Luna
1,463 views
the equilibrium constant Kc for the reaction H2 + Co2 to H2O + CO is 4.2 t 1650°C initially .80 mol of H2 and 0.8 mol Co2 are
4 answers
asked by
Tintin
2,180 views
what mass of zinc dissolved in dilute HCL will produce 0.15g of hydrogen ?
can you explain the steps to sloving this question
4 answers
asked by
precious
1,203 views
Which of the following elements can be detected by XPS?
A. Hydrogen and lithium B. Boron and helium C. Lithium and boron I think
4 answers
asked by
Morgan
1,573 views
1. Nicotine,a poisonous compound found in tobacco leaves,is 74% carbon,8,65% hydrogen and 17,35% nitrogen (a)calculate the
4 answers
asked by
Please help please
2,740 views
Redox reaction in assign oxidation number is ca3(po4)2
4 answers
asked by
Prajwal
2,587 views
Automobile batteries use 3.0 M H2SO4 as an electrolyte. How much 1.20 M NaOH will be needed to neutralize 225mL of battery acid?
4 answers
asked by
Anonymous
3,925 views
The equation for the reaction that occurs when lead(II) oxide is heated with coke in a blast furnace is: 2PbO+c -->2Pb+CO2
(i)Sta
5 answers
asked by
Qindan
2,696 views
Based on the following reaction 2A + 3B --> A2B3, if 1 mole of A is reacted with 2 moles of B, explain how you would determine
3 answers
asked by
Guy
3,467 views
Consider the titration of 25.0mL of 0.10M HAc with 0.10M NaOH. That is, NaOH is added to HAc. (a)pH at the beginning of
4 answers
asked by
Layla
1,445 views
Given the concentrations, calculate the equilibrium constant for this reaction:
I2(g) + Cl2(g)---> 2ICl(g) At equilibrium, the
4 answers
asked by
byke
4,347 views
Suppose that 30.0 mL of 0.20 M C6H5COOH(aq) is titrated with 0.30 M KOH(aq)
(a) What is the initial pH of the 0.20 M
4 answers
asked by
Zell
1,647 views
Use activity coefficients to find the concentration of hydrogen ions in a solution of 70.0 mM butanoic acid and 0.1 M NaCl. The
5 answers
asked by
amanda1012
1,561 views
HOBr (aq) <----> H+ (aq) + OBr- (aq), Ka = 2.3 x 10^-9
Hypobromous acid, HOBr, is a weak acid that dissociates in water, as
5 answers
asked by
Confused
2,798 views
A piece of cadmium is placed in a solution in which [Cd^2+]=[Sn^2+]=1.00M. Will the following reaction proceed spontaneously?
Cd(
4 answers
asked by
Amanda
871 views
SN2 and SN1 reactions of the same alkyl halide and nucleophile/base have the same intermediates.
4 answers
asked by
Jules
191 views
Use the table of molar masses to answer the question
Element: | Molar mass (g/mol): Silicon 28.09 Oxygen 16.00 How many molecules
4 answers
asked by
Samado
873 views
1. An organic compound with a formula mass of 417 g/mol was
analyzed for ethoxyl (CH3CH2O—) groups by the reactions ROCH2CH3 +
4 answers
asked by
Mae Ann Siao
713 views
If the equilibrium constant for a particular chemical reaction is 1 x 10^-3, what does this tell us?
A. At equilibrium, there are
4 answers
asked by
Anonymous
1,526 views
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