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Chemistry
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Questions (97,929)
Use the equation to complete the activity.
21986 Rn + Beta→21985 As The nuclear equation shows a form of radon into astatine
3 answers
asked anonymously
71 views
A 25.0ml sampla of H2SO4 is titrated with 30.0ml of 0.150m NaOH.calculate the concentration of the H2SO4.
2 answers
asked by
Leilanie
173 views
calculate the number of atoms in 50 dm3 nitrogen gas
6 answers
asked by
ndalama
4,500 views
What is the approximate pH of a solution labeled 6 x 10^-5 M HBr?
7 answers
asked by
jahil
6,500 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
3,791 views
Sufficient strong acid is added to a solution containing Na2HPO4 to neutralize one-half of it. what will be the pH of this
7 answers
asked by
ERAGON
7,298 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
1,742 views
Calculate the volume of 0.300M HNO3 needed to complete neutralize 25.0ml of 0.250M Sr(OH)2
5 answers
asked by
Doleen
2,444 views
At 25 degrees C, a sample of NH3( molar mass 17 g) effuses at the rate of .050 mole per minute. Under the same conditions, which
4 answers
asked by
Anonymous
3,386 views
Which statement about an atom is correct?
A.The electrons had a negative charge and is found outside of the nucleus. B. The
7 answers
asked by
Yamshae
2,308 views
The double displacement reaction of aluminum sulfate and calcium hydroxide.
5 answers
asked by
hannah
4,399 views
The number of moles of H2O produced in reaction of 50ml 1.0 M HCl and 50mL 1.0 M Naoh
6 answers
asked by
Amanda
9,725 views
How many moles of oxygen atoms are there in 2 moles of CuSO4?
5 answers
asked by
John
1,056 views
Enter the net ionic equation for the reaction of aqueous sodium chloride with aqueous silver nitrate
22 answers
asked by
ej
36,611 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
6,784 views
write the balanced equation for the ionization of the weak base pyridine, C5H5N, in water
8 answers
asked by
Kristin
35,395 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
7,952 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
15,863 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
7,835 views
A buffer is prepared using acetic acid, CH3COOH, (a weak acid) and sodium acetate, CH3COONa (which provides acetate ions, the
6 answers
asked by
kevin
3,596 views
Calculate the amount of work done for the conversion of 1.00 mole of Ni to Ni(CO)4 in the reaction below, at 75oC. Assume that
7 answers
asked by
Joshua Chang
5,601 views
Calculate the current that must be passed into a solution of aluminium salt for 30mins in order to deposit 1.5g of aluminium
6 answers
asked by
Janet
2,392 views
Which equation shows conservation of mass and charge?
A.NH4Br → NH3 + Br2 B. 2Mg + Fe3+ → Mg2+ + 3Fe C. H2SO4 + LiOH →
6 answers
asked by
Angie
7,204 views
The equilibrium constant (Keq) is the ratio of ____ concentrations to ____ concentrations at equilibrium, with each
5 answers
asked by
MEGAN!!!!!!!!!!!
2,988 views
what does
Zn( NO3)2 form in a half equation for redox ( reduction and oxidation )??
4 answers
asked by
Layzell-Marie
2,923 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
8,099 views
Just a few questions about rates of reaction.
A) Why are the units for average and instantaneous rates the same? -because they
7 answers
asked by
Jamie
5,341 views
if you disolve 2.00 mol KI in 1.00 L of water will you get a 2.00 M solution? explain please
4 answers
asked by
lynda smith
3,093 views
Calculate the [h30+] in a 0.010M solution of Sr(OH)2
5 answers
asked by
Saphire
2,981 views
what is the pH of 0.316 M KC6H5O? what is the pH of 0.245 M CH3NH3I?
4 answers
asked by
Ari
4,222 views
which of the following could dissolve a precipitate of CaC2O4 in a saturated solution of CaC2O4?
A.NaOH B.CaC2O4 C.H2C2O4
5 answers
asked by
saphire
3,163 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
4,114 views
why rate of forward reactionns slow down when a reversible reactions approches equilibrium stage?
4 answers
asked by
kashaf
430 views
How do you find unpaired electrons in a metal ion in CuSO4·5H20?
4 answers
asked by
May
2,331 views
A volume of 10.0 mL of a 0.00650 M solution of Cl- ions are reacted with 0.500 M solution of AgNO3. What is the maximum mass of
5 answers
asked by
Toni Jones
2,718 views
A 25.0 mL sample of 0.100 M propanoic acid (HC3H5O2, Ka = 1.3 ✕ 10-5) is titrated with 0.100 M KOH solution. Calculate the pH
4 answers
asked by
Tyler
2,070 views
In the gas-phase reaction given below, the [I2] changes from 0.400 M at 0.00 min to 0.200 M at 3.00 min. I2 + Cl2 --> 2 ICl
5 answers
asked by
Lionel
4,623 views
Explain how sodium carbonate can be used to soften hard water
7 answers
asked by
alphaticus
3,079 views
1)) The following two half-cells are paired up in a voltaic cell. How will lowering the pH affect the E of the overall cell?
C
5 answers
asked by
Val
1,060 views
Balance the following equation for a half reaction that occurs in basic solution. Use e– as the symbol for an electron.
SO3^2-
9 answers
asked by
BOB
10,258 views
A voltaic cell at 25oC consists of Mn/Mn2+ and Cd/Cd2+ half-cells with the initial concentrations [Mn2+] = 0.100 M and [Cd2+] =
4 answers
asked by
nj
3,649 views
A 0.03 mol sample of NH4NO3(s) is placed in a 1 L evacuated flask, which is then sealed and heated. The NH4NO3(s) decomposes
5 answers
asked by
jerry
5,403 views
how many ions are present in 0.5 mol of sodium oxide?
thanks
6 answers
asked by
freddyyyyy!
2,841 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
3,802 views
Given the following acid dissociation constants, which acid has the strongest conjugate base?
a. HCN Ka = 6.2 x 10-10 b. HOCl Ka
5 answers
asked by
Christine
2,178 views
How does adding NH3 into the cell with CuSO4 affect the voltage measurement? The other cell has ZnSO4
4 answers
asked by
Marry
5,072 views
what is the oxidation number of Carbon in C6H12?
thank you!
4 answers
asked by
Jake
3,597 views
Magnetite, an iron ore with formula Fe3O4, can be reduced by treatment with hydrogen to yield iron metal and water vapor.
(a)
6 answers
asked by
Marie
4,948 views
A particular metallic element, M, has a heat capacity of 0.36 J*g*K, and it forms an oxide that contains 2.90 grams of M per
12 answers
asked by
.
4,206 views
How can you balance Cu+HNo3=Cu+(No3)2+No+H2o by using algebric or a b c d method please show me with full workout
5 answers
asked by
Eldana
2,490 views
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