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Chemistry
Page 39
Questions (96,258)
Consider the following cell:
Pt|H2(g, 0.460 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 1.00 V at
5 answers
asked by
Daisy
8,872 views
A solution that contains 55.0 g of ascorbic acid (Vitamin C) in 250. g of water freezes at −2.34°C. Calculate the molar mass
4 answers
asked by
Diana
3,705 views
a 1.00 L aqueous solution contained 5.80 g of NaOH. what is the pH of the solution?
Can someone help me out with the setup of
6 answers
asked by
Anna
2,986 views
Concentrated aqueous ammonia contains 1.00 mol NH3 dissolved in 2.44 mol H20. What is the mole fraction of NH3 in concentrated
5 answers
asked by
Lauren
2,487 views
Write out all the mole ratios of Al + H2SO4 —> Al2(So4)3 + H2 there are 5 in total
6 answers
asked by
gabe
876 views
How would 250 ml of o.15 M KNO3 solution be prepared?(in form of equation)
4 answers
asked by
Kawnullah
625 views
Which solution will contain the higher concentration of chloride ions? 0.31mol/l sodium chloride or 0.16mol/l magnesium chloride
4 answers
asked by
Debby
510 views
When lead (IV) oxide is heated with hydrogen, the following reaction occurs:
PbO2(s) + 2H2(g) → Pb(s) 2H2O(g) This reaction
4 answers
asked by
Ibraheem
1,281 views
39.8g of a mixture of potassium chloride, KCl, and potassium trioxochlorate(V), KClO3, were heated to a constant mass. If the
4 answers
asked by
Oyinade
1,636 views
An electrochemical cell of notation Pd | Pd²⁺ || Cu²⁺ | Cu has E° = -0.65 V. If we know that the standard reduction
4 answers
asked by
stefani
1,079 views
For the decomposition of ammonium chloride NH4cl(s) =>NH3(g)+Hcl (g) at 427degree centigrade , kp=4.8 calculate kc for this.
4 answers
asked by
Feruza
1,345 views
In a chemical reaction, 10 moles of the element aluminum react with 7.5 moles of oxygen gas. This produces 5 moles of aluminum
7 answers
asked by
BS
2,956 views
'Would the probability factor in the rate equation be greater or lower if the particles colliding were individual atoms instead
4 answers
asked by
SarahF275
1,462 views
how many grams of NaCl required to prepare in 2500 ppm(w/v) NaCl 250 mL solution
4 answers
asked by
lynda
2,659 views
Not sure if i posted this but
Need help with my pH calculations? 0.10 mol of solid sodium hydrogen carbonate and 0.20 mol of
3 answers
asked by
dan
745 views
I do not understand how to right a balanced equation for the combustion of cellulose in oxygen to produce carbon dioxide and
4 answers
asked by
linda
3,311 views
So I have the balanced equation:
c3H8 +502 = 3C02 +4H20 Question: At STP propane (C3H8) burns in oxygen to form 2.15L of carbon
4 answers
asked by
Stefan
1,214 views
50.0 mL of 0.116 M NaOH is titrated with 0.0750 M HCl. Calculate the pH after the addition of 5.0 mL volume of acid.
4 answers
asked by
Nathan
1,332 views
Carbon dioxide is usually formed when gasoline is burned. If 30.0 L of Co2 is produced at a temperature of 1.00 X 103 C and
7 answers
asked by
Sylvia
3,499 views
Please help
the question that I got is: Calculate how much 95% ethyl alcohol will be required to dissolve 075g sulfanilamide at
5 answers
asked by
Andy
3,392 views
hi! this question confuses me.
"Pennies have mass of approximately 2.5 g. How many pennies are needed to make a mole of copper?"
5 answers
asked by
Carly
1,472 views
Given the equation:
6CO2(g) + 6H2O(l) -> C6H12O6(s) + 6O2(g) What is the minimum number of liters of CO2(g), measured at STP,
5 answers
asked by
Ken
4,015 views
My question is basically to find out what these reactants yield:
CuCl2(aq) + NH3(aq) --> ? my best guess here is... CuCl2(aq) +
7 answers
asked by
Frederique
4,636 views
WHAT IS THE BALANCE REACTION FOR THE REACTION BETWEEN COPPER AND TRIOXONITRATE(V)ACID
4 answers
asked by
Anonymous
1,073 views
. On heating under suitable conditions, 1 liter of a monoatomic gas X combines with 1 .5litres of oxygen forming an oxide.
What
4 answers
asked by
Ziva
645 views
if you're given a chart of half cell potentials (reduction potentials), how can you figure out which metals produce the highest
4 answers
asked by
melissa
3,211 views
An apparatus consists of a 4.0 dm3 flask containing nitrogen gas at 25 oC and 803 kPa. It is joined by a valve to a 10.0 dm3
4 answers
asked by
IGNITIOUS
2,081 views
Why does the calculated values of enthalpy change different from the reference values? Suggest two reasons.
4 answers
asked by
tina
3,569 views
What will happen if a mixture of BaCl2.2h2O and KCl heated up to 150 centigrade ?
4 answers
asked by
Ashen
3,914 views
Describe an experiment to determine the boiling point of a small quantity of a liquid
7 answers
asked by
rita
3,557 views
What mass of ammonia is necessary to produce 500 kJ of heat?
4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g) ΔrH = -906 kJ mol-1
4 answers
asked by
Anonymous
1,289 views
Which of the following bases could you write an equilibrium expression for?
A. Ba(OH)2 B. KOH C. NaOH D. NH3
4 answers
asked by
jessie
1,765 views
HCl is a gas at room temperature and does not conduct electricity. Yet when dissolved in water, the solution becomes an
4 answers
asked by
Morgan
1,308 views
Calculate the atomic mass of titanium. The five titanium isotopes have atomic masses and relative abundances of 45.953 amu
5 answers
asked by
Mg Good
2,125 views
If a solution contains 0.0100 mole of HCl in 10.0 mL aqueous solution.
a.) What is its molarity? My answer is 1M (0.0100
4 answers
asked by
audrey12
1,013 views
what is the pH and pOH of a soution with a volume of 5.4 that contains 15 grams of HCl and 25 grams of nitric acid
4 answers
asked by
Anonymous
1,287 views
The chemical substance in natural gas is a compound called methane. Its molecules are composed of carbon and hydrogen and each
4 answers
asked by
Perry
2,753 views
A 25.00 mL sample of 0.4 M dimethylamine (CH3)2NH is titrated with 0.150 M HCl.
What is the pH at the half-equivalence point? Not
4 answers
asked by
1/2 equivalence point
3,256 views
what is the total mass of LiBr required to make 500.0 grams of an aqueous solution of LiBr that has a concentration of 338 ppm?
4 answers
asked by
Lauren
4,026 views
The oxidation of sulfur dioxide to sulfur trioxide is an important reaction. At 1000K, the value of Kc is 3.6 x 10^-3. What is
5 answers
asked by
Jenny
995 views
Two moles of a nonelectrolyte solute are dissolved in 1 kg of an unknown solvent. The solution freezes at 7.8 degrees Celsius
5 answers
asked by
Alyssa
3,372 views
A battery is constructed based on the oxidation of magnesium and the reduction of Cu^2+. The initial concentrations of Mg^2+ and
4 answers
asked by
Emma
6,457 views
Calculate the grams of solute required to make the following solutions.
a)2500g of saline solution (0.90% NaCl (m/m)) b)0.050kg
4 answers
asked by
Kim
3,007 views
What three conversion factors are often used in mole conversions?
4 answers
asked by
Sam
3,968 views
What is the least reactive with aqueous solutions of metal ions?
A. tin B. zinc C. gold D. calcium
4 answers
asked by
HI:)
730 views
in an examination,31 candidates passed chemistry,29 passed physics and 3 failed both subjects,if 50 candidates sat for
4 answers
asked by
abdsalam habeebullah
581 views
Calculate the concentration of [H+] and [OH-] in 0.002 mol/L of HNO3 solution.
4 answers
asked by
Jealson
889 views
Sodium propionate, NaC3H7O2, is used as a food preservative. What is the Kb of C3H7O2- given Ka HC3H7O2 = 3.4x10-5.
4 answers
asked by
Leaf02
451 views
Write the formation reaction for ammonium acetate, NH4C2H3O2(s)
4 answers
asked by
Dua
985 views
Calculate the enthalpy change (in kJ) associated with the conversion of 25.0 grams of ice at -4.00 °C to water vapor at 109.0
4 answers
asked by
HT
1,694 views
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