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Chemistry
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Questions (97,929)
does anyone have the answers for Calculating mass quick check?
1. Which option correctly describes the reactants and products of
10 answers
asked by
Anonymous
6,416 views
Name two metals which form both soluble trioxocarbonate (iv) and soluble tetraoxosulphate (vi)
4 answers
asked by
Nicola
896 views
consider the equation for the following reaction at equilibrium. X+Y<-->2Z+heat the concentration of the product could be
5 answers
asked by
Jazmin F.
3,305 views
Just wanted to make sure I did this right.
Use the equation to answer the question. FeCl3 +3NH4OH—-> Fe(OH) 3 +3NH4Cl Which
4 answers
asked by
:)
455 views
The equilibrium constant, Keq, for the reaction:
SO3(g) + NO (g) ⇋ NO2 (g) + SO2 (g) was found to be 0.500 at a certain
4 answers
asked by
arshly
1,457 views
Use the following table of volumes and concentrations of strong acids and bases to determine the final pH for each solution (a -
4 answers
asked by
husoy
899 views
How many of the following changes would alter the numerical value of the equilibrium constant Kp for the reaction 2OF2(g) ⇀
4 answers
asked by
Sara
853 views
Which is a stronger base in aqueous solution, IO- or IO3-? Explain.
4 answers
asked by
Lisa
5,167 views
Which element has the same number of valence electrons as bromine (Br)?
1.krypton 2.potassium 3.selenium** 4.chlorine i think the
30 answers
asked by
Caca Fleischmann
10,492 views
Calculate the lattice energy of potassium oxide from the following data:
Enthalpy of sublimation of potassium: +89.24 kJ/mol Bond
5 answers
asked by
Joanie
13,498 views
Calculate the enthalpy of combustion of C3H6:
C3H6 (g) + 9/2 O2 (g) yield 3CO2 + 3H2O using the following data: 3C (s) + 3H2 (g)
4 answers
asked by
Mandy
9,385 views
1. The atomic mass is equivalent to 1/12 of the mass of a neutral atom of which element?
a. gold b. hydrogen c. carbon d. oxygen
10 answers
asked by
frank ocean
7,310 views
A dilute electrolyte is not necessary weak and a concentrated electrolyte weak and a concentrated electrolyte is necessary
3 answers
asked by
Tatu
213 views
Which are particles that make up the nucleus of an atom select the two correct answers
3 answers
asked by
Garris
289 views
A solid acid is dissolved in enough water to make 200 ml of a solution. 40.0ml of the solution is titrated to a phenolphthalein
5 answers
asked by
Aria
1,463 views
To what volume should 1.19 ml of an 8.00 m acetic acid solution be diluted in order to obtain a final solution that is 1.50 M?
sh
6 answers
asked by
liz
1,800 views
Vinegar contains ethanoic acid (CH3OOH).titration of 3.00g of vinegar with 0.12M NAOH Solution requires 23.0cm3 to reach the
5 answers
asked by
Ekekhide
1,205 views
What would be the effect on the percent acetic acid if 30 mL of vinegar had been used in place of 50 mL? Explain?
4 answers
asked by
Gwyneth
1,376 views
The oxidation number of sulphur in CuSO4.5H2O is ......
12 answers
asked by
Anonymous
8,684 views
a. Calculate the expected freezing-point depression of a 0.200 m KNO3 solution.
b. Will the value you calculated match the actual
5 answers
asked by
Drew
6,709 views
Calculate the number of moles of Na2CO3 present in 100cm^3 of 2 M Na2CO3 solution.i got 5 moles.am i right
7 answers
asked by
lucy
1,832 views
A current of 45A is passed through a solution of gold salt for 1 hour 45 minutes calculate (a) the mass of gold deposited (b)
7 answers
asked by
Joy
2,678 views
A direct-current power supply of low voltage (less than 10 volts) has lost the markings that indicate which
output terminal is
5 answers
asked by
Confused
3,839 views
Plastic articles can be chromium-plated by coating them with thin layer of graphite paste,placing them in a bath of aqueous
5 answers
asked by
harish
3,940 views
BrO3- + 5Br- + 6H+ <--> 3Br2 + 3H2O
If 25.0 ml of 0.200-molar BrO3- is mixed with 30.0 ml of 0.45-molar Br- solution that
5 answers
asked by
Andrew
4,878 views
Which of the following choices is NOT a potential application of the solubility product constant?
A. Use (K sp) to find
7 answers
asked by
Anonymous
2,442 views
separate this redox reaction into its component half-reactions.
O2 + 4Cu-->2CuO Oxidation half-reaction: ? Reduction
5 answers
asked by
Sophie
3,303 views
A protein solution (0.3ml) is diluted with 0.9ml water. 0.5ml is taken and reacted with 4.5ml of reagent and the resulting
5 answers
asked by
Anonymous
1,672 views
How many grams of Fe(NO3)2 are present in 555mL of a 0.650 M solution of Fe(NO3)2??
I have no clue what to do??
5 answers
asked by
Ocean
2,541 views
How much heat would be released by burning one gallon of octane? The density of octane is 0.703g/mL. 1 gallon= 3.79 liters.
4 answers
asked by
Amber
4,483 views
the question reads:
a) balance the equation: H3PO4 + Ca(OH)2 --> Ca3(PO4)2 + H2O b)what mass of each product results if 750 mL of
5 answers
asked by
Anonymous
4,443 views
The graph shows the titration curve for 25.0mL of an aqueous solution of B titrated with 0.100MHCl. Which of the following best
5 answers
asked by
qwerty
3,685 views
A sample of gas of mass 2.929 g occupies a volume of 426 mL at 0degree Cel and 1.00 atm pressure. What is the molecular weight
6 answers
asked by
Peter
2,291 views
Write an equation for the reaction between iron fillings and dilute tetraoxosulphate (VI) acid.
5 answers
asked by
Divine
351 views
Salts that are insoluble in water are made by precipitation.
● Lead(II) iodide, PbI2, is insoluble in water. ● All nitrates
4 answers
asked by
PP
1,142 views
What is the total iconic equation and net ionic equation of the reaction between barium nitrate and ammonium oxalate Ba(NO3)2 +
4 answers
asked by
Anonymous
7,503 views
Nitric acid is produced commercially by the Ostwald
process, represented by the following equations: 4NH3(g) + 5O2(g) > 4NO(g) +
4 answers
asked by
Shawn
4,584 views
The pH of a .200M HBrO solution is 4.67. What is the acids Ka?
4 answers
asked by
Shayla
1,666 views
write balanced equation of the reaction of bromine and sodium thiosulfate
4 answers
asked by
swas
1,932 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
3,414 views
A 30.75 mL sample of 0.450 MKOH was titration with an unknown concentration of HCl. The endpoint was reached when 29.35 mL of
9 answers
asked by
Rebecca
1,626 views
How many grams of NH3 is there in 800 cm^3 at STP of NH3 gas?
3 answers
asked by
Shipra
1,216 views
This questions has 5 parts but I already have the answers for a and b. I need help on the last three parts.
In an electrolytic
3 answers
asked by
anonymous
1,901 views
4. Calculate the mass of zinc carbonate that would remain if 17.0g of zinc carbonate was
reacted with 50cm3 of 4M nitric acid.
3 answers
asked by
Freddy
667 views
From the following:
pure water solution of C12H22O11 (m=0.01) in water solution of NaCl (m=0.01) in water solution of CaCl2
5 answers
asked by
Sal
5,430 views
Find the percentage composition of calcium in the following compound, round to the nearest hundredth of a percent.
calcium
1 answer
asked by
murder
34 views
Which is true about distillation? (1 point)
It uses semipermeable membranes to filter out particles. It removes mainly large
1 answer
asked anonymously
63 views
When an element is burnt in excess oxygen, is the oxide formed always:
1. a crystalline solid 2. greater in mass than the element
5 answers
asked by
Monica
2,804 views
Which is reduced in the following reaction:
Cr2O72-+6S2O32-+14H+>2Cr3+ + 3S4O62- + 7H20 A. H+ B. Cr6+ C. S4O62- D. S2+ E. O2- I
4 answers
asked by
Debbie
6,471 views
A 1.2M NaOCl solution is prepared by dissolving solid NaOCL in distilled water at 298K. The hydrolysis reaction
OCl-(aq) + H2O(l)
7 answers
asked by
Anonymous
2,168 views
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