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Chemical Reactions
Page 9
Questions (14,820)
1.A student is asked to measure the time taken for 4.00g of magnesium carbonate to react completely with 25.0 cm3 of dilute
5 answers
asked by
Ochaya
1,863 views
Write a net ionic equation for the overall reaction that occurs when aqueous solutions of hydrosulfuric acid and potassium
7 answers
asked by
savannah
9,496 views
how should the ph of a 0.1 m solution of nac2h3o2 compared with that of a 0.1 m solution of kc2h3o2?
4 answers
asked by
Ali
3,507 views
Why does effervescence when the Group 2 anion precipitate is acidified imply the presence of (CO3)2- ?
4 answers
asked by
Dave
2,864 views
Use Le' Chatelier's Principle.
this is a solution at equilibrium: 2CrO4^2-(aq)+ 2H^+(aq)< >Cr2O7^2-(aq) +H20 2CrO4^2- yellow
7 answers
asked by
lostttt
3,492 views
2H2O2 --->2H2O + O2
What is the instantaneous rate of formation of O2 at 50s? THeres a graph with the concentration of H2O2 as a
3 answers
asked by
Natash
1,535 views
Here's the answers for the quick check I took.
1. The system would shift toward the products to oppose the change. 2. adding an
8 answers
asked by
Tablesaur
1,935 views
What volume of 0.344 M K3PO4 is required to
react with 79 mL of 0.87 M MgCl2 according to the equation 2 K3PO4 + 3 MgCl2 →
1 answer
asked by
jordan
310 views
Which of the following conditions would most likely affect the rate of a chemical reaction?
A. Increasing the number of reaction
4 answers
asked by
Andrea
2,722 views
the contact process prepares purest form of sulphuric acid
2so2+o2=2so3 calculate its kp if following concentrations are found at
4 answers
asked by
Arooj
1,169 views
CH3CH2NH2(aq) + H2O(l) <-> CH3CH2NH3+(aq) + OH-(aq)
Kb = 5.0e-4 Ethylamine, CH3CH2NH, a weak base reacts with water according to
4 answers
asked by
Jess
9,759 views
What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA–, A2–) at pH 7.05?
Not sure how to
5 answers
asked by
Sam
813 views
A 0.6334 gram of sample of impure mercury (II) oxide was dissolved in an unmeasured excess of potassium iodide.
Reaction: HgO +
5 answers
asked by
Anonymous
3,163 views
Methanol (CH3OH) is used in the production of many chemicals. methanol is made by reacting carbon monoxide and hydrogen at high
5 answers
asked by
Skye
5,350 views
The following reaction occurs spontaneously. 2H+(aq)+ca(s) Ca2+(aq)+H2(g)
write the balanced reduction half-reaction
5 answers
asked by
Steve
5,535 views
Use Lowry-Brönstes theory to write the balanced equation for the following reaction: HNO3(aq) +OH(aq)><_+_
2 answers
asked by
Bonia
193 views
The chemical reaction which occurs during the Haber process is:
Nitrogen + Hydrogen Ammonia N2(g) + 3H2(g) 2NH3(g) Use Le
2 answers
asked by
Brian Giles
112 views
(a)explain why the colour for ions in the flame tests differ (b)Why do the chemicals have to be heated in the flame first before
4 answers
asked by
kabelo
1,954 views
A silver ring is dropped in a solution of Pb(NO3)2 for a certain period. Will you find it intact? Explain.
4 answers
asked by
lea
1,321 views
The data below were collected for the following reaction:
2NO2 (g) + F2 (g) ->2NO2F(g) A: Calculate the value of the rate
5 answers
asked by
Amy
8,257 views
A galvanic (voltaic) cell consists of an electrode composed of chromium in a 1.0 M chromium(II) ion solution and another
7 answers
asked by
Anonymous
14,766 views
Write formula equations and net ionic equations for the hydrolysis of sodium carbonate in water.
Responses Chemistry - DrBob222,
7 answers
asked by
anonymous
9,009 views
in the biochemical process
hydrogen + carbon dioxide -> carbohydrate + water the source of the hydrogen would be H2O, right?
3 answers
asked by
iloveeyouu
1,016 views
2n2o5(g)→4no2(g)+o2(g) when 40g of n2o5 decomposes, 4.5g of o2 is formed. what is the percent yield
5 answers
asked anonymously
540 views
Reactivity
1 answer
asked anonymously
44 views
7.
Choose the best answer. What is the definition for the following term? Catalyst having to do with a chemical reaction in which
1 answer
asked by
uh9bryr
110 views
H3AsO4 reacts with water as follows:
H3aso4+h20<=>h2aso4- + h30+ The conjugate base of h3aso4 in this reaction is
4 answers
asked by
Anonymous
2,807 views
MnO4 ^- + C2O2 ^2- = MnO2 + CO3 ^2-
how would you balance this in basic solution? I keep getting the wrong answer.
4 answers
asked by
lily
2,233 views
What is the Kc for the following reaction at equilibrium at 800∘C if [CO2]= 0.030M ?
CaCO3(s)⇌CaO(s)+CO2(g)
4 answers
asked by
anynomous
3,403 views
I have been told that to prepare 1L of 70% H2SO4 from concentrated sulphuric acid (96% with density 1.84g/ml), I should use the
4 answers
asked by
Tricia
1,761 views
Determine if HNO3 can dissolve in the following metal:
1) Write a balanced chemical reaction showing how the 2.09g Cu dissolves
4 answers
asked by
Lisa
2,539 views
Will a precipitate form when 100.0 mL of a 7.5 10-4 M Mg(NO3)2 is added to 100.0 mL of 5.8 10-4 M NaOH? (Hint: Ksp for Mg(OH)2 =
4 answers
asked by
Bill
1,050 views
sodium metal reacts violently with water to produce aqueous sodium hydroxide and hydrogen gas. calculate the enthalpy change for
7 answers
asked by
Maci
2,772 views
The following data are obtained for the decomposition of N2O5 at a certain temperature:
2N2O5(g)↔4NO2(g) + O2(g) Time(s) 0 200
4 answers
asked by
cara
1,763 views
You are given several grams of solid sodium chloride and water and asked to make a solution. Explain what happpens on a
1 answer
asked by
Alisha
559 views
If 2g of zinc reacted with excess hydrogen chloride acid
2 answers
asked by
Afolabi Tomilola
151 views
How do you balance redox equation under acidic and basic solution.give seven examples with explanation on each ?
2 answers
asked anonymously
127 views
To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water.
4 Au(s) + 8
2 answers
asked by
Kenah Smith
594 views
Mass relationships in chemical reaction.Make a solution
For the combustion of ethane,beginning with 0.27 mole of CH3 CH3. How
1 answer
asked anonymously
116 views
A 2.500 g portion of sodium hydroxide (NaOH) is placed in a 250.00 mL volumetric flask and diluted to the water mark. It is
1 answer
asked anonymously
94 views
Write a balanced equation for the complete combustion of 1 mole of ethyne gas (C2H2) ?
4 answers
asked by
Amanda
2,495 views
Suppose 20 atoms of hydrogen (H) react with chlorine (Cl) to produce 20 molecules of hydrochloric acid (HCl). According to the
5 answers
asked by
aren
1,641 views
1)Balance the following gas-phase reaction and 2) write its reaction quotient, Qc:
CH4(g)+F2(g)......>>.....<<.......
3 answers
asked by
patrick
1,508 views
A 40.3 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3.
5 answers
asked by
Gabriella
808 views
Lithium reacts with nitrogen gas according to the following reaction: 6Li(s)+N2(g)-->2LiN(s)
What mass of lithium (in g ) is
6 answers
asked by
JULIE
12,437 views
Please identify the net ionic equation for Na3PO4 +ZnSO4=Zn3(PO4)2+ Na2SO4
3 answers
asked by
Jessica
2,253 views
Please help me
PCl5 + H2O → H3PO4 + HCl What coefficients will balance the equation? 1, 4, 1, 5 1, 5, 1, 1 2, 5, 1, 2 2, 4, 2,
4 answers
asked by
BS
2,536 views
A gas-forming reaction produces 1.35 m3 of gas against a constant pressure of 143.0 kPa. Calculate the work done by the gas in
4 answers
asked by
christie
6,137 views
write a balanced equation that describes an acid base reaction that would allow you to determine the moles of aspirin present in
4 answers
asked by
molly
4,211 views
A solution of hydrogen peroxide, H2O2, is titrated with a solution of potassium permanganate, KMnO4.
It requires 51.7 mL of 0.145
4 answers
asked by
Anna
4,008 views
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