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Chemistry
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Questions (98,735)
in which chemical reaction is the number of atoms in the reactants the same as the number of atoms in the products?
a.
41 answers
asked by
stranger
22,380 views
Complete and balance the reaction
Al(s) + Pb2+(aq) ! using the smallest possible integers. I got: 2Al(s) + 3Pb2 ==> Al2Pb3
6 answers
asked by
brian
6,010 views
a volume of 50 cm of oxygen was exploded in 50cm of carbon iv oxide. what was the volume of the residual gas at room
2 answers
asked anonymously
202 views
A model of an atom shows eight electrons in rings that represent different energy levels. How many electrons are in each energy
29 answers
asked by
oi
14,340 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
1,819 views
The reaction of 2.5 mol of O2 with 4.6 mol of C3H8 will produce ________ mol of H2O.
4 answers
asked by
Anonymous
15,881 views
The oxidation number of sulphur in CuSO4.5H2O is ......
12 answers
asked by
Anonymous
8,702 views
HA and HB are two strong monobasic acids.
25.0cm3 of 6.0moldm–3 HA is mixed with 45.0cm3 of 3.0moldm–3 HB. What is the H+(aq)
6 answers
asked by
Anna
8,144 views
The overall balanced equation for the production of ethanol from glucose is as follow
C6H12O6 = 2C2H5OH + 2CO2 a) what is the
4 answers
asked by
Usman Bilal
3,690 views
what is the freezing point of a solution of 12.0 g of CCl4 dissolved in 750.0g of benzene? the freezing point of benzene is 5.48
5 answers
asked by
Kim
4,344 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
4,885 views
The Henry's law constant for CO2(g) in water at 25 °C is 29.4 bar·M–1. Estimate the concentration of dissolved CO2(g) in a
5 answers
asked by
Matt
8,509 views
The equation shows the complete combustion of propane.
C3H8(g) + 5O2(g) --> 3CO2(g) + 4H2O(i) Which statement is correct? A)
4 answers
asked by
Muhammad Haris
2,844 views
When 84.8 g of iron(III) oxide reacts with an excess of carbon monoxide, iron is produced.
Fe2O3(s) + 3CO(g) ==> 2Fe(s) + 3CO2(g)
7 answers
asked by
Kim
8,523 views
Geraniol is a compound found in rose oil that is used in perfumes. What is the molas mass of geraniol if its vapor has a density
7 answers
asked by
Meg
3,823 views
In a reaction Mg(s) + 2HCl(aq) → H2(g) + MgCl2(aq), 6.00 g of Mg was present at 0.00 min. After 3.00 min, 4.50 g of Mg
5 answers
asked by
Julia
3,245 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
4,498 views
Base your answer on the following redox reaction, which occurs spontaneously in an electrochemical cell. Zn + Cr3+ --> Zn2+ + Cr
4 answers
asked by
Mike
2,564 views
The reaction of sodium hydrogen carbonate (baking soda), NaHCO3 and vinegar is a safe and effective method of opening a clogged
4 answers
asked by
Mike
1,393 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
1,156 views
3 moles C6H12O6 in 100 ml equals what molarity?
7 answers
asked by
Katie
1,823 views
A sample is to be analyzed for its chloride content by precipitating and weighing silver chloride. What weight (g) of sample
4 answers
asked by
Jinjin
1,304 views
Mno4- + So3-2 = Mno2 + sO4-2 (OH-) solve this redox reaction and give me the method also
4 answers
asked by
kiara
16,600 views
Name two metals which form both soluble trioxocarbonate (iv) and soluble tetraoxosulphate (vi)
4 answers
asked by
Nicola
907 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
4,591 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
3,427 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
1,904 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
43 views
A typical soap molecule consists of a polyatomic anion associated with a cation. The polyatomic anion containd hydrogen, carbon
5 answers
asked by
celina
3,174 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
9,400 views
Equation: Fe2O3 + 2Al ---> 2Fe + Al2O3.
How many grams of Fe2O3 react with excess Al to make 475g Fe? Can you show me step by
4 answers
asked by
Anan
4,101 views
Liquid water can be separated into hydrogen gas and oxygen gas through electrolysis. 1 mole of hydrogen gas and 0.5 moles of
55 answers
asked by
hunter
9,858 views
What would be the ph of a 0.20M CH3COOH solution if no salt were present?
5 answers
asked by
Lazima Hassan
2,228 views
Which of the following does NOT happen when vinegar and baking soda react?
true or False?
6 answers
asked by
Marcus
1,738 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
1,470 views
What is the freezing point depression of an aquous solution of 10.0 g of glucose in 50.0 g H2O?
7 answers
asked by
Gabrielle
3,531 views
Complete and balance the reaction
Al(s) + Pb2+(aq) → using the smallest possible integers. What is the coefficient of Pb in the
4 answers
asked by
tyler
1,011 views
25cm3 of a solution of 0.1mol dm-3 NaoH reacts with 50cm3 of a solution of hydrochloric acid.What is the molarity of the acid
7 answers
asked by
jonah
7,843 views
Consider the following equilibrium process at 700°C:
2H2 + S2 ↔ 2H2S Analysis shows that there are 2.50 moles of H2,
6 answers
asked by
Chris
11,499 views
Commercial vinegar was titrated with NaOH solution to determine the content of acetic acid, HC2H3O2. For 20.0 milliliters of the
4 answers
asked by
Sarah
8,362 views
Determine the pH of a solution made by diluting 25mL of 6.0 M HCl until the final volume of the solution is 1.75 L
6 answers
asked by
Dylan
6,011 views
The concentration of a hydrochloric acid solution is 0.5mol/dm3.
How many moles of hydrochloric acid are present in 25cm3 of this
7 answers
asked by
Muhammad Haris
3,746 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
1,844 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
Hydrogen selenide (H2Se) reacts with water according to the following equation.
H2Se + H2O → SeH– + H3O+ In three to five
5 answers
asked by
Please Help!!
2,136 views
Nucleophile or electrophile?
(1) CH3COOH (2) CH3COO- At first, I thought that they were both Nucleophiles, but now Ive confused
5 answers
asked by
Sarah
5,903 views
At 900 K the following reaction has Kp=0.345; 2 SO2(g) + O2 (g) -> 2 SO3 (g)
In an equilibrium mixture the partial pressures of
6 answers
asked by
Anonymous
10,160 views
copper compounds such as copper (II) sulfate are toxic. before disposal, these compounds must be treated to reduce their
6 answers
asked by
Josh
6,916 views
separate this redox reaction into its component half-reactions.
O2 + 4Cu-->2CuO Oxidation half-reaction: ? Reduction
5 answers
asked by
Sophie
3,311 views
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
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