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About half the world's production of pigments for paints involves the formation of white TiO2. It is made on a large scale by
3 answers
asked by
Anonymous
955 views
i was told to Convert 1 metric ton to grams ore then to grams TiO2 (using the 0.75% in the ore), then to g TiCl4 (using the
2 answers
asked by
Anonymous
541 views
a sample bulb contained 0.712g of H2(g) at a certain temperature and pressure. At the same temperature and pressure, the bulb
4 answers
asked by
Anonymous
612 views
when a 0.702g sample of a mixture of volatile hydrocarbons is burned in a bomb calorimeter with a heat capacity of 4287 J/C, the
4 answers
asked by
Bekah
1,261 views
As a system increases in volume, it absorbs 52.5 J of energy in the form of heat from the surroundings. The piston is working
1 answer
asked by
Amanda
1,003 views
Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 50. cm3. If the combustion of
2 answers
asked by
Amanda
544 views
One mole of H2O(g) at 1.00 atm and 100.°C occupies a volume of 30.6 L. When one mole of H2O(g) is condensed to one mole of
1 answer
asked by
Amanda
617 views
i measured out 2 different tared mass of TUMS sample. One is 0.1554g and the other 0.1546g.
Then i did two titrations with the
6 answers
asked by
Anonymous
467 views
What is the molecular shape of ethylene (C2H4)? And what is the number of electrons that the carbons share between them?
2 answers
asked by
Anonymous
569 views
Do odd electrons make a weak or strong repulsion axis?
3 answers
asked by
Anonymous
288 views
A heat lamp produces 22.5 watts of power at a wavelength of 6.0 Mu.How many photons are emitted per second? (1watt= 1J/s )
4 answers
asked by
Kristen
1,333 views
If the density of cylinder 1 is 3.55 , what is the density of cylinder 2? (The masses and volumes of two cylinders are measured.
3 answers
asked by
Alex
829 views
previous answer to problem before this one(relevant in 2nd half of this question): 294.472689amu
what would be the mass of 1.36
5 answers
asked by
Kayla
285 views
How much Ca(OH)2 is required to remove 90.0% of PO4^-3 from 7.5 times 10^6 L of drinking water containing 25 mg/l of PO4^-3?
4 answers
asked by
Emily
2,236 views
Consider the following symbolic reaction in which the hypothetical elements hearts (¢¾) and diamonds (♦) react to produce
2 answers
asked by
Lisa
499 views
For the following reaction:
A + 3B �¨ 4C Which of the following provides the direct link between the amount of reactant A and
3 answers
asked by
Lisa
554 views
The maximum amount of product D that can be produced from the following reaction is 55.75 g.
2A + B �¨ 2C + 3D Following an
3 answers
asked by
Lisa
508 views
Consider the following reaction.
3Ca(s) + N2(g) �¨ Ca3N2(s) What is the theoretical yield in grams for the reaction if 10.50 g
2 answers
asked by
Lisa
738 views
In a reaction vessel, the following reaction was carried out using 0.250 mol of NH3(l) and 0.100 mol of N2(g).
4NH3(l) + N2(g)
2 answers
asked by
Lisa
696 views
A stock solution is prepared by adding 20mL of 0.2M Na3PO4 to enough water to make 80mL. What is the Na+ concentration of 20mL
3 answers
asked by
Kev
914 views
A mixture of the compounds sodium oxide and magnesium chloride contains 2.4182 g of sodium oxide and is 89.3 % by mass magnesium
3 answers
asked by
Lance
462 views
Now the reaction (2NO+2H2==> 2H20+N2) is believed to take place in three steps, the first of which is the fast reversible
2 answers
asked by
Crystal
534 views
I need help with this question!!
a sample of pure KHP weighing .8097g dissolved in water and titrated with 40.25 mL of NaOH
4 answers
asked by
Emily
867 views
A gas containing carbon and hydrogen analyzed as 85.6 % carbon and 14.4 % hydrogen. A 42.1 g sample of a gas occupied a volume
3 answers
asked by
Lance
1,048 views
The initial concentration for the compounds involved in the reaction shown were determined to be [CH4(g)] = 0.6616 mol/L,
1 answer
asked by
Morgan
395 views
give the balanced equation for oxidation of iron(II)ion by permanganate and find how many millimoles of permanganate ion react
2 answers
asked by
Anonymous
929 views
given the concentration of 125.0mg/L of Fe(2+)in the stock solution and the volume used which is (1.00mL) how do i calculate the
1 answer
asked by
Anonymous
442 views
How many grams of steam and iron must react to produce 375g of magnetic iron oxide, Fe3So4
3 answers
asked by
Miguel
2,386 views
what is the percent yield of SiF4 using the mixture in the previous question if 8.76g of SiF4 is obtained from the reaction
1 answer
asked by
Ernesto
447 views
The sun bombards the earth with about 1KJ m^-2s^-1. Calculate the maximum mass of pure ethanol that can be vaporized in 10 min
1 answer
asked by
James
332 views
How many grams of H3BO3 forms when 28.16 grams B2H6 react with excess water?
1 answer
asked by
Kristynn
424 views
how would you prepare 175.0ml of .150 m agno3 solution starting with pure agno3
2 answers
asked by
Anne
668 views
calculate the average volume of sodium hydroxide required for the titration of 25.00mL of the standard sulfuric acid solution.
Fr
4 answers
asked by
Anonymous
426 views
calculate the moles of sulfuric acid that remained in the solution after reaction with the carbonate.
the tared mass of carbonate
5 answers
asked by
Anonymous
1,505 views
how do i calculate the moles of Na2CO3 present in the original 25.00mL aliquot of carbonate solution??
the tared mass of Na2CO3
5 answers
asked by
Anonymous
1,671 views
Assuming that Ka is 1.85 *10-5 for acetic acid, calculate the pH at one-half the equivalence point and at the equivalence point
3 answers
asked by
Kenetria
2,511 views
calculate the theortetical percentage of water for the following hydrates.
Calcium nitrate tetrahydrate Ca(No3)2 X 4H2O
2 answers
asked by
Rhonda
638 views
We will calculate the amount of acid to use in each titration. Assume that you are using 0.0512 M NaOH(aq). A good volume of
1 answer
asked by
Alex
842 views
A 14.0 g sample of Krypton has a temperature of 25C at 625mm Hg. What is the volume, in Milliliters, of the krypton?
2 answers
asked by
Will
521 views
Using the molar volume (STP) or the ideal gas law equation, determine the molar mass,g/mole, of each of the following.
A: 11.2g
2 answers
asked by
Will
737 views
Two moles of Mg and five moles of O2 are placed in a reaction vessel, and then the Mg is ignited to produce Mg (F.W.= 40.31
4 answers
asked by
Shelby
1,190 views
Calculate the heat in joules needed to warm 225g of water from 88.0 degrees Celsius to its boiling point 100.0 degrees Celsius
2 answers
asked by
Alex
837 views
Calculate the number of Joules released when 75.0 g of water are cooled from 100.0 degrees Celsius to 27.5 degrees Celsius
5 answers
asked by
Josh
2,507 views
The specific Heat of gold is 0.128 J/g degrees Celsius. How much heat would be needed to warm 250.0g of gold from 25.0 degrees
5 answers
asked by
Chris
2,428 views
What volume of the solution in 5a would be necessary to react completely with 23.00mL of 0.549M NH3 according to the equation:
2 answers
asked by
Bill
608 views
Using the accurate concentration that you measured in Part A (which is 14.77 ml), calculate the mass of HCl (in grams) present
1 answer
asked by
Alex
355 views
Is .1M NaH2PO4 a good buffer? Explain.
3 answers
asked by
Kelsey
508 views
a mixture contains two crystalline solid X and Y. Decide if pure X can be obtained by a proper recrystallization using solvent
6 answers
asked by
Anonymous
527 views
Upon decomposition, one sample of magnesium fluoride produced 1.66kg of magnesium and 2.56kg of fluorine. A second sample
4 answers
asked by
Kaycie
790 views
How many moles of aluminum do 2.66×10^24 aluminum atoms constitute?
2 answers
asked by
Kaycie
1,066 views
what might be the reason that this is happening:
During a simple distillation i have 14ml or 50/50 hexane;toluene mixture in a
3 answers
asked by
Anonymous
514 views
2NO(g)+O2(g)<->2NO2(g) has KP = 2.77 × 1011 at 25 °C. Suppose a mixture of the reactants is prepared at 25 °C by transferring
5 answers
asked by
Peter
458 views
Calculate activities of Ca2+ and F- and the solubility of fluorite (CaF2) in pure water at 25C without regard to possible
4 answers
asked by
Ren
930 views
The Water loss by the sample, and the percent by weight of water in the unknown hydrates is 34.78%H2O.
which of the ten possible
1 answer
asked by
judy
324 views
You weigh a sample of a monoprotic unknown acid and dissolve it in 50.00 mL of distilled water. Exactly half of this solution is
2 answers
asked by
Kim
669 views
For each trial, enter the amount of heat lost by the calorimeter, qcalorimeter.
Be careful of the algebraic sign here and
3 answers
asked by
Jose
1,582 views
When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius.
-How many moles of dry air were in
1 answer
asked by
Abbey
902 views
When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius.
-How many moles of dry air were in
1 answer
asked by
Abbey
445 views
When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius.
-How many moles of dry air were in
1 answer
asked by
Abbey
446 views
What must we know a given ionic salt to be able to predict whether is is a good or poor conductor, w/o testing its conductivity?
7 answers
asked by
judy
803 views
Calculate the pH at the equivalence point if 25.00 mL of 0.010M barbituric acid (HC4H3N2O3) is titrated with 0.020M NaOH. (Ka
2 answers
asked by
Mary
493 views
Based on a Kc value of 0.140 and the data table given, what are the equilibrium concentrations of XY, X, and Y, respectively?
4 answers
asked by
Anonymous
1,827 views
Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the
2 answers
asked by
Timothy urgent need
796 views
In your experiment you weigh out 0.995 g NaHCO3. How much 1.0 M HCl should you add to get
the most NaCl?
1 answer
asked by
Brit
437 views
calculate the initial concentration of SCN- ions and Fe3+ ions when a solution was prepared by mixing 3.00mL of 0.00280M KSCN,
4 answers
asked by
Cat
2,768 views
A 150.0 mL sample of a 1.50 M solution of CuSO4
is mixed with a 150.0 mL sample of 3.00 M KOH in a coffee cup calorimeter. The
2 answers
asked by
Esther
973 views
If a 375 mL sample of water was cooled from 37.5°C to 0°C, how much heat was lost (in joules)
4 answers
asked by
Esther
1,861 views
If your heating generates soot on the bottom of the crucible, what is the origin of the soot? How will this soot collection
4 answers
asked by
Maggie
1,696 views
Please help me. I have worked on this for 2 days. I don't understand the ratio of this equation.4Na+O2 to 2Na2O.
for question:
3 answers
asked by
Linda
569 views
A solution is saturated in both nitrogen gas and sodium iodide at 50 degrees C . When the solution is cooled to 25 degrees C
3 answers
asked by
Brandy
1,568 views
If 3.00 moles of NaCl were mixed with 0.9 L of 0.5 M of AgNO3, how many moles of solid would form? Include the formula for the
1 answer
asked by
Kevin
371 views
1 L of N_2_ gas, having a pressure of 2.5 atm, is added 1 L of Ar gas, having a pressure of 3.7 atm, in a sealed, rigid flask.
3 answers
asked by
Devin
664 views
how many liters of ethanol contain 1.5 kg of ethonal?
3 answers
asked by
Val
1,814 views
Please tell me what I did wrong on this problem:
Given the equation Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g), Calculate the number of
4 answers
asked by
Theresa
3,286 views
Calculate the unknown of Ag+ if the potential of the following concentration cell is 300 mV at 25.0 C.
Ag|Ag+(unknown)||Ag+(0.100
4 answers
asked by
Samantha
3,112 views
Arrange the following compounds in the order of increasing Ksp: AgCl, AgBr, AgI. Explain your reasoning.
I got AgI<AgBr<AgCl but
4 answers
asked by
Anissa
2,173 views
For the reaction that occurs in the voltaic cell
Fe(s)|Fe2+(aq)||Cr3+(aq),Cr2+(aq)|Pt(s) use data from Appendix D in the textbook
4 answers
asked by
Brandon
2,676 views
When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 5.43 g of C6H6 is added to 5.69 kg of
4 answers
asked by
Shannon
2,905 views
The specific heat of a certain type of cooking oil is 1.75 cal/(g·°C). How much heat energy is needed to raise the temperature
4 answers
asked by
Shannon
1,779 views
A 43.70 g sample of a substance is initially at 24.7 °C. After absorbing 1757 J of heat, the temperature of the substance is
2 answers
asked by
Angel
674 views
When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 7.59 g of C6H6 is added to 5.69 kg of
3 answers
asked by
Angel
1,157 views
the acid dissociation constant for acetic acid is 1.85x10^-5. Calculate the pH at the equivalent point and the pH at one-half
3 answers
asked by
Courtney
1,502 views
Suppose 15.0 grams of solid sodium hydroxide solid at 20.5 oC is dropped into 120 grams of water in a container that has a heat
1 answer
asked by
Matt235
637 views
Oxygen has a Henry’s law constant of 1.3*10^-3 mol/kg*bar at 25 °C when dissolving in water. If the total pressure of gas (
1 answer
asked by
Pablo
746 views
Determine the concentrations of MgCl2, Mg2+, and Cl- in a solution prepared by dissolving 2.39 x 10^-4g
MgCl2 in 2.50L of water.
3 answers
asked by
Bailey
4,133 views
If the reaction rate increases by 2.6 when the temperature increases from 20-30 degrees Celsius, what is Ea?
Do we use 2.6 in
2 answers
asked by
ts
473 views
Calculate the pH at the equivalence point in the titration of 55.0 mL of 0.180 M methylamine(Kb = 4.4 × 10−4) with 0.330 M
1 answer
asked by
Emily
465 views
A 86.3mL sample of water is initially at 17.4 degC. How many kilojoules (kJ) of heat must be added to raise the temperature of
2 answers
asked by
Matthew
551 views
Please help I have no idea how to do this.
There are three different dichloroethylenes (molecular formulaC2H2Cl2), which we can
2 answers
asked by
Hannah
615 views
When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 10.0 oz drink from 77 ∘F to 40 ∘F, if the
2 answers
asked by
Braliegh
520 views
What is the maximum mass (in grams) of each of the following soluble salts that can be added to 120 mL of 0.050 M BaCl2 without
4 answers
asked by
John
1,373 views
A 1.00g of sample of an iron ore containing Fe2O3 was dissolved in an acid and all the iron converted to Fe^2+. The solution was
2 answers
asked by
Mayunda
573 views
What is the limiting reactant of Sr(NO3)2+Na2CO3-->2NaNO3+SrCO3? Then what is the amount of strontium carbonate that can be
3 answers
asked by
Evan
556 views
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