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An aqueous solution of nitric acid has a density of 1.084 g mL-1 and a measured concentration of 2.580 molar. What is the
3 answers
asked by
Patty
1,074 views
methyl benzene + oxygen
is this just a combustion reactions so CO2 and H2O are produced?
7 answers
asked by
Lena
1,368 views
Would you expect jewelry made of an alloy of silver and copper to tarnish(react) in an environment where chlorine fumes exist?
3 answers
asked by
danny
1,110 views
The mass of the CuSO4 x 5H2O sample is 1.664 g. The mass of the recovered copper is 1.198 g.
1. Compute the experimental percent
3 answers
asked by
Lou
1,029 views
An empty vial has a mass of 56.42 g. If the vial has a mass of 233.13 g when completely filled with liquid mercury (d = 13.53
4 answers
asked by
Arthur
929 views
how many milliter of .246 M HNO3 should be added to 213 ml of 0.00666 M 2,2'-bipyridine to give a pH of 4.19?
please help, does
4 answers
asked by
bun
1,526 views
a sample of gas is compressed from 3.25 l to 1.20 l at constant temperature. if the pressure of this gas in the 3.25 l volume is
4 answers
asked by
hasan
960 views
A solution that is formed by combining 600. mL of 0.20 M NaOH with 400. mL of 0.40 M HNO3 has an H+ concentration of
3 answers
asked by
leona
601 views
what is(2.25x10*3)(4.80x10*4)=
3 answers
asked by
mark
473 views
What is the freezing point (°C) of a solution prepared by dissolving 11.3 g of Ca(NO3)2
(formula weight = 164 g/mol) in 115 g of
5 answers
asked by
jessie
4,498 views
Lithium hydride reacts with water as follows.
LiH(s) + H2O(l) -->LiOH(aq) + H2(g) During World War II, U.S. pilots carried LiH
3 answers
asked by
amber
1,167 views
Water (2330 g) is heated until it just begins to boil. If the water absorbs 5.53×105 J of heat in the process, what was the
4 answers
asked by
Anonymous
2,993 views
For the elementary reaction
NO 3 + CO → NO2 + CO 2 the molecularity of the reaction is __________, and the rate law is rate =
4 answers
asked by
JES
7,539 views
I am trying to figure out how to calculate the ratio of CH3NH2 to CH3NH3Cl required to create a buffer with pH of 10.26, I'm not
4 answers
asked by
moe
2,393 views
suppose you had an unknown solution that contained either dissolved NaOH, NaCl< or NaNO3. you add 4 drops of AgNO3 solution to
5 answers
asked by
julia
3,551 views
for a combination reaction, it was calculated that 7.59g of A would exactly react with 4.88g of B. these amounts were reacted,
4 answers
asked by
julia
1,278 views
Silver chloride, often used in silver plating, contains 75.27% Ag. Calculate the mass of silver chloride in grams required to
7 answers
asked by
hannah
6,691 views
A 2.241 g sample of nickel reacts with oxygen to form 2.852 g of the metal oxide. Calculate the empirical formula of the oxide.
1
3 answers
asked by
hannah
3,905 views
An ideal gas in contained in a cylinder with a volume of 5.0x102mL at a temperature of 30C and a pressure of 710 torr. The gas
4 answers
asked by
julia
2,063 views
Can you please tell me if these are right?
Determine the pH for the following solutions A [OH-] = 1.0 X 10^-7 M I got 7 B. [H3O+
3 answers
asked by
Jessie
520 views
What is the empirical formula for Ba(NO3)2
3 answers
asked by
pete
641 views
Calculate the solubility of magnesium hydroxide (Mg(OH)2), ksp=1.1x10^-11?
i have done this problem so many times and keep
4 answers
asked by
jessie
2,282 views
the ionization energy for atomic hydrogen is 1.31x10^6 J/mol. what is the ionization energy for He^+
3 answers
asked by
kate
1,097 views
When an electric discharge is passed through boron trichloride a new compound is formed. what is its simplest formula if on
4 answers
asked by
christine
1,047 views
100 grams of sodium phosphate contains how many sodium ions? what is the formula?
2 answers
asked by
shane
618 views
Calculate the mole fraction of the solute in the following aqueous solution:
a) .112M C6H12O6 (d=1.006g/ml). b) 3.2% ethanol, by
4 answers
asked by
emerald
3,103 views
I need help classifying these as physical or chemical changes!
1. sodium metal exposed to air turns dark gray. 2. steam in a test
4 answers
asked by
Emily Grossman
1,484 views
Hydrogen and carbon dioxide react at a high temperature to give water and carbon monoxide.
H2(g) + CO2(g) --> H2O(g) + CO(g) (a)
7 answers
asked by
Rachel
2,375 views
Ascorbic acid, H2C6H6O6, is a diprotic acide with a K1= 7.9 E-5 and a K2=1.6E-12. In a .005 M aq solution of ascorbic acid which
3 answers
asked by
bob
3,218 views
an -ol suffix indicates that an -OH group has been added to a hydrocarbon. Which formula represents 1,2-ethanediol?
1 C2H4(OH)2 2
4 answers
asked by
lisa
792 views
a hard H20 contains 0.0085% Ca by mass(form Ca+ ions).How much H2O(g) contains 1.2g of Ca?
4 answers
asked by
susan
2,139 views
a piece of (density= 10.5 g/ml)dropped into water displaces 21.56 ml of water. what is the mass (in grams) of this piece of
2 answers
asked by
jj
864 views
a volume of 10.0 ml of a 0.00450 M solution of Cl- ions are reacted with 0.500 M solution of AgNO3.What is the maximum mass of
4 answers
asked by
sam
1,605 views
A 2.30 L sample of O2(g) was collected over a liquid at a total pressure of 785 torr and 25°C. When the O2(g) was dried (vapor
3 answers
asked by
Anonymous
626 views
how many kilojoules of heat are absorbed when 1.00 L of water is heated from 18C to 85C? density of water is 1.0 g/ml
7 answers
asked by
Skye
3,941 views
How to find the %(W/V) of 134mL of a 0.610 M solution of Mg(OH)2
3 answers
asked by
chem
806 views
is a solution containing 35g of NaCl per 100g of water at 25 degrees Celsius, saturated, unsaturated, or supersaturated
5 answers
asked by
nakisha
1,963 views
calculate the solubility of barium sulfate (Ksp=1.1x10^-10) in
a) water b) a 0.10 M barium chloride solution help is GREATLY
2 answers
asked by
brooke
1,005 views
How much energy (in Joules) is required to heat 13.48 g of water from 10.5 oC to 46.2 oC ? Use 4.184 J/goC as the specific heat
3 answers
asked by
emily
985 views
a volume of 20. l of O2 os warmed from -30c to 85c what is the new volume if the pressure is kept constant
3 answers
asked by
annie
837 views
what is the maximum amount of KNO3 that can dissolve in 300 grams of water at 40 degree C. Solubility of KNO3 is 60g/100g at
4 answers
asked by
bkue
1,505 views
the half life of oxygen-15 is 124 s. if a sample of oxygen-15 has an activity of 4000 Bq, how many minutes will elapse before it
4 answers
asked by
Anonymous
5,293 views
As the mass of the particle is increased while the speed of the particles remains the same, would you expect the bending to
4 answers
asked by
hannah
1,588 views
what is the symbol for the element that has 78 protons
76 electrons 117 neutrons and a +2 net charge? i thought it was ^195Os^+2
3 answers
asked by
sara
1,478 views
over the years, the thermite reaction has been used for welding railorad rails, in incendiary bombs, and to ignite solid fuel
4 answers
asked by
greeny
2,167 views
When 20.5 g of methane and 45.0 g of chlorine gas undergo a reaction that has a 75.0% yield, what mass (g) of chloromethane
3 answers
asked by
tiffany tai
1,389 views
net ionic equation. Aqueous acetic acid (HC2H3O2) is neutralized by aqueous barium hydroxide.
i got H^+(g) + OH^-(g) --> H_2O(l)
4 answers
asked by
rebekah
10,009 views
What is the percent yield for a reaction when 166.3 grams of W2O3 combines with Carbon Monoxide but only produces 147.8 grams of
3 answers
asked by
Carina 78
1,069 views
Is CaCl2 an ionic compound or molecule? plss help. i'm just a little bit confused.
3 answers
asked by
chemdummy
415 views
Given the concentrations, calculate the equilibrium constant for this reaction:
I2(g) + Cl2(g)---> 2ICl(g) At equilibrium, the
4 answers
asked by
byke
4,353 views
When the concentration of I2 is increased to 1.5 M, the ratio of products to reactants is 28. The equilibrium constant for the
3 answers
asked by
tracy
2,341 views
A 6.75-g sample of gold (specific heat capacity = 0.130 J/g °C) is heated using 55.8 J of energy. If the original temperature
5 answers
asked by
dave
3,714 views
What CH3COONa concentration is required to prepare a buffer solution with a pH of 4.80 if [CH3COOH] = 0.150 M? Ka of CH3COOH =
5 answers
asked by
hannah
779 views
For the indicated atom in each of the following molecules or ions, give the number and arrangement of the electron pairs around
4 answers
asked by
Jack
1,502 views
Which of the following could be added to a solution of sodium acetate to produce a buffer? ?
A) acetic acid only B) acetic acid
3 answers
asked by
hannah
3,733 views
6. What is wrong with the following electron configurations for atoms in their ground states?
a) 1s^2 2s^2 3s^1 b) (Ne) 2s^2 2p^3
4 answers
asked by
tra
5,721 views
Which of the following diatomic species are paramagnetic and which are diamagnetic? A blank molecular orbital diagram (Figure 2)
3 answers
asked by
Anonymous
1,428 views
Suppose you have two 100mL graduated cylinders. In each cylinder, there is 36.0mL of water. You also have two cubes: one is
4 answers
asked by
Debby
708 views
Hydrogen iodide can decompose into hydrogen and iodine gases.
2HI(g) mc026-1.jpg H2(g) + I2(g) K for the reaction is 0.016. If
3 answers
asked by
jason
2,340 views
How many grams of NH3 are present in 725 mL of gas at STP?
3 answers
asked by
haley
1,377 views
How many moles of carbon, hydrogen, and oxygen are present in a 100-g\rm g sample of ascorbic acid?
3 answers
asked by
helen
1,656 views
how much energy is required to vaporize 1.5 kg of copper?
4 answers
asked by
chase
2,777 views
Calculate the atomic mass of titanium. The five titanium isotopes have atomic masses and relative abundances of 45.953 amu
5 answers
asked by
Mg Good
2,136 views
A 0.167-g sample of an unknown compound contains 0.00278 mol of the compound. Elemental analysis of the acid gives the following
4 answers
asked by
Rocky
7,328 views
I titrated a 250mg tablet to see if it really had 250mg of scorbutic acid (H2C6O6) a diuretic acid, in it. I took a 250mg
7 answers
asked by
mark
572 views
How many chloride ions are present in 65.5 mL of 0.210 M AlCl3 solution
4 answers
asked by
Anonymous
3,476 views
Balance
Fe2(SO4)3 + Ba(OH)2 => Fe(OH)3 + BaSO4
4 answers
asked by
Dianne
1,772 views
Alka-Seltzer contains the base sodium hydrogen carbonate, NaHCO3, which reacts with hydrochloric acid in the stomach to yield
3 answers
asked by
vc
1,237 views
a solution is prepared with 3.26g kcl and water to make 25.0ml,of kcl,what is the %(m/V) of the kcl solution.
5 answers
asked by
michelle
4,157 views
Calculate the amount of heat required to raise the temperature of a 65-g sample of water from 32∘C to 65∘C. (The specific
4 answers
asked by
jb
5,442 views
Magnesium can react with aqueous nitric acid, HNO3, to form hydrogen gas and magnesium nitrate. Write down the balanced chemical
4 answers
asked by
ecquation
3,135 views
why is aniline soluble in HCl and nitrobenzene not?
4 answers
asked by
Anonymous
1,667 views
An ethylene glycol solution contains 30.2 g of ethylene glycol (C2H6O2) in 87.0 mL of water. (Assume a density of 1.00 g/mL for
3 answers
asked by
mia
1,745 views
For the reaction below, the equilibrium constant is Kc = 3.2×10−10 at 25 °C.
Pb(s) + 2 Cr3+(aq) ⇌ Pb2+(aq) + 2 Cr2+(aq)
5 answers
asked by
taylor
1,381 views
Consider the following equilibrium.
2 NOCl(g) ⇌ 2 NO(g) + Cl2(g) Determine Kc if 1.00 mol of NOCl(g) is initially placed in an
4 answers
asked by
jhope
977 views
Calculate the mass of water produced when 1.47 g of butane reacts with excess oxygen.
4 answers
asked by
Anonymous
541 views
How many moles of CO2 are produced from 10 moles of O2
How many grams of CO2 are produced from 10 moles of O2
4 answers
asked by
help me huhu
2,127 views
A gas balloon has a volume of 106.0 liters when the temperature is 45.0 °C and the pressure is 740.0 mm of mercury. What will
2 answers
asked by
savannah
942 views
Some greenhouse gases, such as fluorocarbons (CFCs, HFCs, PFCs, etc.), are human-made. Others, such as water, methane, and
3 answers
asked by
hallie
347 views
When 1mol of a gas burns at constant pressure, it produces 2418 J of heat and does 5 kJ of work.
Part A Identify ΔE for the
1 answer
asked by
arielle
87 views
The compound known as butylated hydroxytoluene, abbreviated as BHT, contains carbon, hydrogen, and oxygen. A 2.751 g sample of
4 answers
asked by
Anonymous
367 views
A buffer solution of formic acid (Ka = 1.78 x 10-4) has 3500 times more formate ions than formic acid molecules. What is the pH
1 answer
asked anonymously
102 views
which one of the following statements about sulfuric acid is correct?
A. sulfuric acid is a known muriatic acid B. sulfuric acid
6 answers
asked by
alf
2,382 views
How many moles of ions are there in .2 mol of lithium oxide?
I need help again... Strictly speaking, Li2O is a solid and in that
1 answer
asked by
Laura
567 views
Can somebody help me please???
Ozone, O3 has a O-O-O connectivity. 1. Draw a lewis structure for ozone 2. Calculate the formal
2 answers
asked by
Nisar
834 views
How many structural isomers of dicloro,hydroxy,butanoic acid are there?
Is there a website that has the structure with names???
1 answer
asked by
Nisar
595 views
What is another name for cardamist? Please write the formula and a link to its structure.
See
1 answer
asked by
Nisar
565 views
If 4.75 mL of cycohexene is reacted with 7.04 g of bromine, which is the limiting reagent? What is the theoretical yield of
1 answer
asked by
Nisar
624 views
How would u prepare each of the following solutions
100 mL of a 245 ppm solution of urea, CH4N2O, in water and How would u
4 answers
asked by
UTramos
1,451 views
how do u set up with problem
How would you prepare 165 mL of a 0.0317 m solution of benzoic acid (C7H6O2) in chloroform (CHCl3)?
1 answer
asked by
UTramos
537 views
What is the strongest acid among the following?
a. CH3COOH b. (Cl)CH2COOH c. (Cl)2CHCOOH d. (Cl)3CCOOH isnt it the most
2 answers
asked by
UTramos
1,147 views
What volume of a 0.2 N NaoH solution do you expect to use in order to titrate 25ml (sample out of 250ml) of a 0.200 N oxalic
1 answer
asked by
Melba
632 views
What is the disadvantage of the English system? Please and thank you!!!
The advantage of the metric system is that units differ
1 answer
asked by
Pyrgus
570 views
What is the frequency of a photon resulting from the transition of
n=6 -->n=1? for what atom. H? U? Na? If for H, use one of the
1 answer
asked by
Mary
671 views
Ionization energy is defined as the minimum energy required to remove an electron from the ground state (n0) to infinity (n∞).
2 answers
asked by
Mary
1,253 views
λ for one line of the hydrogen spectrum is .4118 x 10-4 cm. Use this value in the Rydberg equation to calculate the RH value
1 answer
asked by
Mary
748 views
Using electronegativity arguments, classify the following diatomic molecules as nonpolar (N), polar (P), or ionic (I), and enter
1 answer
asked by
maria
658 views
determine the correct molecular shapes of XeF4, GeF4, and SeF4
(Broken Link Removed)
1 answer
asked by
maria
925 views
the valence of aluminum is +3 and the valence of chlorine is -1. the formula for aluminum chloride is correctly written as?
How
1 answer
asked by
fernando
567 views
What is the name of the compound with the formula N2O5?
Dinitrogen pentoxide. or Nitrogen(V) oxide What is BF3 and NaH?
1 answer
asked by
aa
1,230 views
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