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Chemistry
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Questions (98,743)
How many liters of CO2 form at STP if 5.0g of CaCO3 are treated with excess hydrochloric acid? show all your work
5 answers
asked by
nichole
4,180 views
ia 3ag2S+2AL = 6 ag +al2s3 a double replacement or single replacement
5 answers
asked by
Patricia
3,326 views
how many moles of oxygen atoms does 1.2x10^25 diphosphorus pentoxide molecules have?
hwo many oxygen atoms are in 1.25 mol
7 answers
asked by
lisa
3,819 views
3.22g of hydrated sodium sulphate, Na2SO4 X H2O were hearted to a constant mass of
1.42 g. Determine the value of x in the
5 answers
asked by
Freddy
2,562 views
How many grams of HCl must be used to produce 10.0L of chlorine gas at STP?
Reaction: 2HCl (g)--->H2 (g)+Cl2 (g)
7 answers
asked by
Cliff
6,401 views
In the chemical reaction where N2O4(g) is converted to 2NO2(g), if 0.5 M N2O4 and 0.15 M NO2 are present in the vessel, is the
5 answers
asked by
Christine
2,672 views
How does adding NH3 into the cell with CuSO4 affect the voltage measurement? The other cell has ZnSO4
4 answers
asked by
Marry
5,088 views
Determine the solubility of a sodium sulfate, Na2SO4, in grams per 100g of water, if 0.94 g of Na2SO4 is dissolved in 20 g of
5 answers
asked by
Alex
4,964 views
What would you expect to see if you performed the chemical reaction shown below? 2H2O2 —> H2O(l) + O2(g)
- solid precipitate
5 answers
asked by
Bri
2,587 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
7,514 views
A 0.5130 g aspirin tablet which was dissolved in 95 percent ethanol required 27.98 mL of 0.1000 M NaOH for neutralization. Then
4 answers
asked by
kelis
1,253 views
35.0 mL of a 0.250 M solution of KOH is titrated with 0.150 M HCl. After 35.0 mL of the HCl has been added, the resultant
5 answers
asked by
Shiro
2,338 views
At what temperatures can 40mL of water dissolve the follownig quantities of potassium nitrate?
(a) 35.0g (b) 20.0g can anyone
10 answers
asked by
Marty
2,022 views
A contains 1.60g of trioxonitrate(v) acid in 250cm³ of the solution.
B contains 9.0gdm3 of XHCO3, 25cm³ portions of B required
4 answers
asked by
Marvellous
505 views
H3PO4 + 3KOH = K3PO4 + 3 H2O What would be the percent yield if you reacted 49.0g of H3PO4 with 112g of potassium hydroxide, and
4 answers
asked by
Glenda
2,598 views
How many liters of gasesous methane (CH4) must be burned in oxygen to produce enough H2O and CO2 to fill a 3.0 L balloon?
Assume
4 answers
asked by
Amy~
1,075 views
What's the aim of titrating potassium tetraoxomaganate(vii) with ammonium iron (ii) tetraoxosulphate (vi)
3 answers
asked by
Blossom
1,127 views
Sulfuric acid is diluted in water to make new mixtures. In one container, 72 ml of a 14% acid solution and, in another
4 answers
asked by
Alex
827 views
calculate the number of atoms in 50 dm3 nitrogen gas
6 answers
asked by
ndalama
4,515 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
10,509 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
13,511 views
If a certain oxide of nitrogen weighing 0.11g gives 56 ml of nitrogen and another oxide of nitrogen weighing 0.15 g gives the
6 answers
asked by
Akashdeep
4,981 views
What is the approximate pH of a solution labeled 6 x 10^-5 M HBr?
7 answers
asked by
jahil
6,507 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
6,483 views
A solution is prepared in which a trace or small amount of Fe+2 is added to a much larger amount of solution in which the [OH]-
6 answers
asked by
brian
3,239 views
Calculate the solubility product of calcium hydroxide if the solubility of Ca(OH)2(s) in water at 25◦C is 0.011 M.
Choices: 1.
6 answers
asked by
vivian
3,809 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
7,319 views
The durian is an Asian fruit that is known for its incredible stench. Food writer Richard Sterling describes its odor as
7 answers
asked by
Anonymous
2,114 views
What charge in coulombs is required to deposit 0.301g Cu(s) from a solution of Cu^2+?
Cu^2+ 2e^- = Cu 0.301g/63.5g/mol = 4.7 x
4 answers
asked by
Steve
1,748 views
Write half equation s for the following reaction.
Cu(s)+2AgNO3(aq) produces Cu(NO3)2(aq)+2Ag.
5 answers
asked by
Joy
3,661 views
How many moles of oxygen atoms are there in 2 moles of CuSO4?
5 answers
asked by
John
1,072 views
How Many Moles Of H2O Are Required To Produce 4.5 Moles Of HNO3 According To The Following Reaction: 3NO2+H2O = 2HNO3+NO
15 answers
asked by
Bake Samuel Burje
6,803 views
Calculate the number of moles of calcium chloride Cacl2 that can be obtained from 25g of limestone CaCo3 in the presence of
22 answers
asked by
Anonymous
7,966 views
Aluminum sulfate reacts with calcium hydroxide (from lime) to form aluminum hydroxide and calcium sulfate. Write the balanced
6 answers
asked by
Ana
13,681 views
What mass of aluminum is deposited electrolytically in 30 minutes by a current of 40A?
13 answers
asked by
Masre
4,040 views
Complete the table relating the values of Δ𝐺∘ and 𝐾 .
Δ𝐺∘ K <0 =0 >0 K can be =1, <1, or >1
4 answers
asked by
Anonymous
11,900 views
The organic compound di-n-butyl phthalate, C16H22O4(l), is sometimes used as a low-density (1.046 g·mL–1) manometer fluid.
5 answers
asked by
Garcia
10,261 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
6,720 views
If one mole of hydrocarbon contain 4g of hydrogen and it molar mass is 40g.what is the homologous series of the compound
5 answers
asked by
fatima
2,126 views
ihave two solutions. in the first solution , 1.0 moles of sodium chloride is disslved to make 1.0 liters of solution . in the
4 answers
asked by
wendy
8,117 views
In one process 4 grams of sulphur was burnt in 48 decimetre cube of oxygen measured at room temperature. What is the limiting
5 answers
asked by
Jay
1,769 views
If K > 1 at 25°C and 1 atm of pressure, then which statement is true about the reaction's equilibrium?
a. There is always more
5 answers
asked by
Christine
2,597 views
An unknown sample was crystallized from benzene. on cooling to 0 degree centigrade in an ice bath the amount of crystals in
5 answers
asked by
abuudharr
4,124 views
calculate number of nucleons in 10cm^3 fluorine gas
5 answers
asked by
Anonymous
1,605 views
why rate of forward reactionns slow down when a reversible reactions approches equilibrium stage?
4 answers
asked by
kashaf
434 views
How do you find unpaired electrons in a metal ion in CuSO4·5H20?
4 answers
asked by
May
2,340 views
What is the mass of 3.01 x 10^22 iron (II) ions, Fe^2+?
5 answers
asked by
Syndra
3,405 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
2,456 views
explain how you would obtain solid lead carbonate from a mixture of lead carbonate and sodium carbonate powder
9 answers
asked by
diane
6,428 views
how many kg of h20 must be added to 75.5g of Ca(NO3)2 to form a 0.500 m solution?
5 answers
asked by
lynda smith
3,460 views
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