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Calculate the number of milliliters of 0.738 M NaOH required to precipitate all of the Mg2+ ions in 148 mL of 0.541 M MgSO4
3 answers
asked by
Eliazbeth
1,274 views
A total of 31.3 ml of 0.15 N NaOH was required to reach a phenolphthalein endpoint in titrating 6.00 g of vinegar. Calculate the
2 answers
asked by
Eliazbeth
498 views
What mass of aluminum is produced by the decompisition of 7.47 kg of Al2O3?
2 answers
asked by
Cheery`
660 views
Calculate the mass of water in grams that could be produced from the reaction of 10.00mL 0.4122M hydrochloric acid and 35.00mL
1 answer
asked by
Missy
484 views
Identify the limiting and excess reagent for each of the following scenarios involving the formation of silicone dioxide, SiO2.
I
2 answers
asked by
Danielle
637 views
Let's explore the efficiency of chloride ion precipitation in seperating Ag^+ from Pb^2+ in a solution. Suppose that [Pb^2+]=
2 answers
asked by
Tanner
508 views
If 59.0 mL of 0.40 M HI is mixed with 100. mL of 0.10 M KOH what is the resulting pH?
3 answers
asked by
Tracey
488 views
A patient has been trying to achieve total blood cholesterol of 175 mg or less per 100 mL. A recent test result of a 3 mL blood
2 answers
asked by
Wyatt
1,143 views
How many milliliters of 5.50 M HCl must be diluted to make 350. mL of a 0.500 M solution?
1 answer
asked by
Wyatt
316 views
25.0 mL of 0.250 M MgCl is transferred to a 300.0 mL volumetric flask and diluted to the mark with deionized water. What is the
1 answer
asked by
Wyatt
438 views
N2+3H2=2NH3
Assume 0.150 mol of N2 and 0.477 mol of H2 are present initially. After complete reaction, how many moles of ammonia
2 answers
asked by
Jenn
1,020 views
When the following equation is balanced properly under acidic conditions, what are the coefficients of the species shown?
ClO3- +
3 answers
asked by
mercy
1,708 views
A 0.5-L saturated solution of silver chloride, AgCl, is evaporated to dryness. The residue is equivalent to 1.4 x 10^-3 mole.
2 answers
asked by
Jonah
623 views
A 2.5 L volume of sodium hydroxide solution was prepared. The titrant was standarized against primary standard oxalic acid
2 answers
asked by
Brittany
538 views
Write all possible quilibrium equations for KHP dissovled in water and then write the quilibrium constanst expressions for the
2 answers
asked by
Brooke
554 views
For an electron in a hydrogen atom, the z component of the angular momentum has a maximum value of Lz = 4.22 x 10-34 J·s. Find
1 answer
asked by
Beth
1,025 views
Please help...I know I'm missing something here
if 50.0mL of AgNO3 reacts with 25.0mL of 0.100M of K2CrO4, what is the molarity
4 answers
asked by
Sheri
1,663 views
The average human body has 1.4x10^2 g of total K within it. Calculate the activity in disintegration/year of the potassium-40 in
1 answer
asked by
Kally
495 views
How many moles of H2PO4 and HPO4 would be needed to prepare 1.0 L of a 0.01M phosphate buffer with a pH of 6.82?
4 answers
asked by
Daniel
1,076 views
Classify the following:
1)CH3CHCH2COOH ! CH3 I think this is a carboxylic acid because of the COOH attached. Would you agree?
1 answer
asked by
Hannah
451 views
A student following the procedure described in this experiment collected the following data:
Mass Mg,g 0.0243 volume of gas mL
2 answers
asked by
Sam
602 views
how many mole of calcium sulfate are in a 100mL of .86M solution?
1 answer
asked by
Riley
303 views
For the following equilibrium; Br2 (g) + Cl2 (g) ⇄ 2BrCl (g)
the Kc = 7.00 at 127oC. If 0.450 mol of Br2 (g) and 0.450 mol of
2 answers
asked by
OVA9000
1,050 views
The flask shown here contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.270 M NaOH.
What
4 answers
asked by
Paul
1,137 views
if the pressue within a tire changes from 1.35 atm to .95 atm the temperture will?
1 answer
asked by
Anonymous
278 views
The flask shown here contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.270 M NaOH.
What
2 answers
asked by
Paul
1,272 views
74.0 mL of a 1.80 M solution is diluted to a volume of 248 mL. A 124-mL portion of that solution is diluted using 135 mL of
2 answers
asked by
Paul
578 views
0.550 L of 0.420 M H2SO4 is mixed with 0.500 L of 0.270 M KOH. What concentration of sulfuric acid remains after neutralization?
2 answers
asked by
Paul
766 views
The flask shown here contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.270 M NaOH.
What
4 answers
asked by
Paul
2,973 views
Determine how many calories are need to heat 30 grams of water from 10 degrees C to 30 degrees C
4 answers
asked by
Ali
883 views
If 1 gram of sugar is 4 Calories(kcal) how many calories are in one sugar cube
2 answers
asked by
Max
463 views
250g of water containing sucrose freezes at -3.5C. What is the molality of the solution?
1 answer
asked by
Jared
346 views
195 g of water containing magnesium chloride boils at 102.5 celcuis. what mass of salt is needed?
4 answers
asked by
Jared
291 views
Full analysis for calcium
1 answer
asked by
Anonymous
237 views
Fluorine gas can react with ammonia gas to produce dinitrogen tetrafluoride gas and hydrogen fluoride gas. This reaction is
3 answers
asked by
Anna
1,384 views
Calculate the standard enthalpy change for the following reaction at 25 °C.
MgCl2(s)+H2O(l)-->MgO(s)+2HCl
2 answers
asked by
Orton
1,068 views
Before solving the problem write a balanced
chemical equation Excess aqueous NaI was added to 50 mL of aqueous CuNO3 solution,
1 answer
asked by
Nick
666 views
if 1.00 g of silver nitrate is combined with 1.00g of sodium chloride what is the mass of the solid if you have 75% yield?
3 answers
asked by
El
964 views
Calculate the \rm pH of a 0.10 M solution of hydrazine, \rm N_2H_4. K_b for hydrazine is 1.3\times 10^{-6}.
2 answers
asked by
Karlie
915 views
How do I solve what is the mass of a 32.5 mL sample of ethanol if the density of ethanol is .789 g/mL. I know Mass = Density *
5 answers
asked by
Brenda
3,236 views
The value of ∆Ho for the reaction below is -1107 kJ:
2Ba(s) + O2(g) → 2BaO(s) How many kJ of heat are released when 15.75 g
2 answers
asked by
Jenny
1,020 views
Which compound would you expect to have the highest melting point? Base your answer off of the bonding theory presented in this
4 answers
asked by
Gena
967 views
When alkali metals are heated with hydrogen they form--------hydrides
3 answers
asked by
Peter
463 views
Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p3.
A. What is the symbol for this
4 answers
asked by
Joe
1,251 views
At STP 4 liters of O2 contains the same total number of molecules as
1L of NH3 2L of Cl2 8L of He 4L of CO2
3 answers
asked by
Kiki
711 views
Consider a 1.50 L aqueous solution of 3.75 M NH3, where 17.5 g of NH4Cl are dissolved. To this solution, 5.00 g of MgCl2 are
2 answers
asked by
Olivia
599 views
A solution is prepared by dissolving 3.44 g of sucrose, C12H22O11, in 118 g of water.
a) What is the molality of the resulting
4 answers
asked by
Kate
588 views
We recently did the baking soda vinegar reaction to determine how much acetic acid was in 15 mL of vinegar. What is the minimum
4 answers
asked by
Anonymous
710 views
An excess of aqueous AgNO3 reacts with 43 mL of 5 M K2CrO4(aq)to form a precipitate. what is it? What mass of precipitate is
4 answers
asked by
Anonymous
1,511 views
A 25-mL sample of 0.160M solution of NaOH is titrated with 17 mL of an unknown solution of H2SO4. What is the molarity of the
4 answers
asked by
Elizabeth
1,708 views
6.52 g of oxygen gas reacts with some amount of iron, and 11.50 g of Fe2O3 are formed. What was the amount of iron that reacted
2 answers
asked by
Tator
539 views
Hydrocarbons are important fuel that we burn for many different reasons.
a. what is a hydrocarbon? b. rank these hydrocarbons by
4 answers
asked by
Jaclyn
1,186 views
a)What is the [Ca2+] when 100mL of .05M CaCl2 is added to 100mL of .10M K2SO4?
b) What is the [SO42-] for part a? c) write the
1 answer
asked by
Katherine
427 views
When the oxide of generic metal M is heated at 25.0 °C, only a negligible amount of M is produced. MO2(s)<-->M(s)+O2(g) DeltaS=
5 answers
asked by
ACDub
1,086 views
The voltage generated by the zinc concentration cell (described by,
Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s)) is 27.0 mV at
3 answers
asked by
Chem. Student
883 views
blanced equation for MgSO4(aq) + BaCl2(aq) describing any precipitaion reaction
2 answers
asked by
Carmen
1,052 views
A 0.411 g sample of powdered copper mixed with an inert, soluble additive was fully consumed by 23.4mL of 0.602M nitric acid,
3 answers
asked by
Veronica
2,424 views
I do not know how to rank the polarity between these, i have also included the boiling point in degrees C but it still does not
3 answers
asked by
Polarity
730 views
A 5 μL drop of compound X, a 7 μL drop of compound Y, and a 15 μL of compound Z are placed in a closed container with 5 mL
1 answer
asked by
Anonymous
371 views
a) Calculate the number of moles in 17.8 g of the antacid magnesium hydroxide, Mg(OH)2.
b) A 0.850-mole sample of nitrous oxide,
4 answers
asked by
Valeria
8,149 views
A 1.91-g sample of a mixture of AgNO3 and NaNO3 is treated with excess Na2S(aq). The precipitate is filtered off, dried and
4 answers
asked by
Wes
811 views
Consider the reaction of sulfuric acid, H2SO4, with sodium hydroxide, NaOH.
H2SO4(aq) + 2 NaOH(aq) -> 2H2O(l) + Na2SO4(aq).
2 answers
asked by
Mandy
1,366 views
In the titration of total acid with sodium hydroxide, NaOH, it was determined that 36.03mL of 0.0980M NaOH was needed to
4 answers
asked by
Mandy
1,485 views
Need Boys #'s
1 answer
asked by
Lindsey
300 views
How many litres of water at 100°C are vaporized by the addition of 5.00 MJ of heat
9 answers
asked by
Fred
488 views
What mass of carbon dioxide is formed by the complete combustion of 885g of methanol?
2 answers
asked by
Shatoya
640 views
calculate the concentration of the solution of 6.4g calcium sulafte is added to 0.125l of water
1 answer
asked by
EFonts
378 views
For the reaction
3 Mg + N2 → Mg3N2 , what is the maximum amount of Mg3N2 which could be formed from 6.66 mol of Mg and 9.34 mol
3 answers
asked by
Dani
1,238 views
Someone please tell me if I'm doing this right... It's due tonight!!
Dr. Bob222, Yesterday I posted a question and you answered
2 answers
asked by
Jennie
509 views
how many moles of hydrogen will be liberated from 200.0ml of 3.00M HCL reacting with an excess of magnesium?
2 answers
asked by
Anonymous
507 views
The aqueous solution of two soluble salts are mixed to precipitate an insoluble salt. Give four different equations to support
4 answers
asked by
Saurav ; please help
484 views
What is the molar solubility of AgCl, Ksp= 1.60x^-10, in a solution that also contains 0.0250 M KCl?
The answer is 1.60x^-10. But
2 answers
asked by
Michelle
622 views
Balance TeO3^3- + N2O4 --> Te +NO3^- using oxidation numbers
Need help A.S.A.P
3 answers
asked by
Clara
2,259 views
I need a recap of how to do the question below. I just need the basic guidelines:
The enthalpy change for the reaction 2H2(g)+O2
9 answers
asked by
Todd
556 views
How does the kinetic molecular theory help explain the difference between solids, liquids, and gases?
Would the answer be
2 answers
asked by
Jack
875 views
(I am a mom trying to help my child had Chem years ago if I can see how this is doNE I can explain it to them)
You have 70.0mL of
1 answer
asked by
Kristina
354 views
Based on equation:
2MnO4¬¬(-) + 6H(+) +5H2O2 → 2Mn(2+) +8H2O + 5O2 A 50.0 mL solution of hydrogen peroxide of unknown
3 answers
asked by
Bree
1,401 views
What volume of 0.57 M HCl is needed to react with 5.6 g CaCO3?
1 answer
asked by
Junior
427 views
the Keq of Mg(OH)2 is 2(10^-11). calculate the concentration of Mg ions in a saturated solution of this compound
2 answers
asked by
Julian
601 views
You need 520. mL of a 15 % (m/v) glucose solution. If you have a 25% (m/v) glucose solution on hand, how many milliliters do you
3 answers
asked by
Jillian
964 views
You need 520. mL of a 15 % (m/v) glucose solution. If you have a 25% (m/v) glucose solution on hand, how many milliliters do you
3 answers
asked by
Jillian
1,044 views
Antifreeze is made by mixing equal volumes of ethylene glycol (d=1.114 g/mL) and water. The resulting solution has a density of
2 answers
asked by
Anonymous
703 views
how many grams of propane would be burned with 80.0g of oxygen?
1 answer
asked by
Matt
402 views
object a has a specific heat of 0.568 j/[(g)(°C)] and object B has a specific heat of 1.34 J/[(g)(°C)]. which o ject A or B
2 answers
asked by
Robin
532 views
Find the mass in grams of
2 x 10^23 of F2 (12.6 grams of F2)
2 answers
asked by
Helen
498 views
You have 775 mL of an 0.11 M acetic acid solution. What volume (V) of 1.10 M NaOH solution must you add in order to prepare an
1 answer
asked by
Jessica
411 views
I was told to find the concentration of acetic acid in vinegar when only using baking soda and common lab equipment. Can someone
3 answers
asked by
David
642 views
Based on the standard analytical practice during a titration of taking pH-volume measurements every 0.3 pH units, how many
3 answers
asked by
Jeff
953 views
An ideal gas with an initial volume of 96L, temperature of 277K, and 7.3mol is permitted to come to a second state with a volume
1 answer
asked by
Kevin
440 views
For the reaction: 2NO(g) + H2(g) <=> N2O(g) + H2O(g) + energy
Write the equilibrium constant expression for the reaction. This
2 answers
asked by
Kat
764 views
For the reaction: 2NO(g) + H2(g) <=> N2O(g) + H2O(g) + energy
Write the equilibrium constant expression for the reaction. This
2 answers
asked by
Kat
684 views
Will Cd(OH)2 precipitate if 10.00 g of Cd(NO3)2(s) (MM = 236.42 g/mol) is added to 0.500 L of a 0.800 M NH3 solution?
1 answer
asked by
Eric
410 views
Combustion of hydrogen sulphide with oxygen
in kmol H2S +O2 = H2O + SO2 can somebody balance this for me and break it down to the
2 answers
asked by
Greg
523 views
Combustion of hydrogen sulphide with oxygen
in kmol H2S +O2 = H2O + SO2 can somebody balance this for me and break it down to the
1 answer
asked by
Greg
404 views
By titration it is found that 12.1 mL of 0.130 M NaOH(aq) is needed to neutralize 25.0 mL of HCl(aq). Calculate the
2 answers
asked by
Tara
517 views
How much bauxite (Al2O3) would you have to mine if you wanted to obtain 100.0 g Al metal from the ore?
2 answers
asked by
Nita
807 views
8g of hydrogen is burnt in the presence of excess oxygen.the mass of water formed is?
3 answers
asked by
Mo
821 views
You started the conventional synthesis with 0.015 mole of salicylic acid. If the reaction worked perfectly, how many moles of
2 answers
asked by
Quan
643 views
2C2H6(g) + 7O2(g) = 4CO2(g) + 6H2O(g) How many L of oxygen gas is needed to produce 18.0 L of CO2
4 answers
asked by
Alexis
1,591 views
In an experiment, 6.25 g of NH3 are allowed to react with 8.50 g of O2. The chemical equation for the reaction is 4NH3 + 5O2 →
2 answers
asked by
Samantha
872 views
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