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modeling fusion quick check
19 answers
asked by
help
4,377 views
The following chemical equation represents the reaction that occurs when methylamine dissolves in water to form a basic
5 answers
asked by
please help
4,599 views
When ionic salt is dissolved in water the ions CO3 and K+ are formed?
KCO3 K2CO3 K(CO3)2 K3CO2 I think its the second one but I
5 answers
asked by
mmv
3,766 views
Arrange the following amines in order of decreasing base strength. NH3, NH2Br, CH3NH2, (CH3)2NH
5 answers
asked by
help!!!
12,502 views
2H2(g)+ O2(g) --> 2H2O(L)
I know the oxidizing agent is oxygen and the reducing agent is hydrogen. what are the number of
5 answers
asked by
tami
5,794 views
mathematical representation quick check answers>?
9 answers
asked by
jay
2,794 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
4,088 views
write the net ionic equation for the unknown titration reaction in this experiment.
KHC8H4O4(aq) + NaOH(aq)----> KNaC8H4O4 +
7 answers
asked by
natash
3,947 views
One method for reclaiming silver metal from silver chloride results in a 94.6%
yield. Calculate the actual mass of silver that
7 answers
asked by
Anonymous
4,729 views
Ka=1.8x10^-5. How do you calculate the value of pKa?
7 answers
asked by
Vivian
13,696 views
When used correctly, the volumetric flasks in the first year chemistry laboratory will produce a solution volume of 250.00 ±
7 answers
asked by
par
1,794 views
The concentration of a benzene solution prepared by mixing 12.0 g C6H6 with 38.0 g CCl4 is__________ molal.
6 answers
asked by
jessie
10,101 views
the molar mass of NaCl is 58.45g. How many molecules does a gram of NaCl contain?
4 answers
asked by
bekah
1,474 views
How much energy, in joules, must be absorbed to convert to Na all the atoms present in 1.00mg of gaseous Na? The first
4 answers
asked by
tomi
6,147 views
how many ions are present in 0.5 mol of sodium oxide?
thanks
6 answers
asked by
freddyyyyy!
2,815 views
Calculate the number of moles required to make 100 mL of a 3.0 M solution of CuSO4·5 H2O.
is the answer .03? if not walk me
5 answers
asked by
fgf
2,620 views
In which situation can Le Chatelier’s principle be applied?(1 point)
It can be applied when a reaction happens in a single
7 answers
asked by
bill nye the science guy
2,163 views
Explain, in terms of electrical energy, how the operation of a voltaic cell differs from the operation of an electrolytic cell
5 answers
asked by
Anonymous
3,433 views
Body temperature is about 308K. On a cold day, what volume of air at 273K must a person with a lung capacity of 2.00 L breathe
5 answers
asked by
jillian
3,959 views
How many moles of O are in 13.0 mol Fe(NO3)3?
can you please find this using dymensional analysis and show me how you worked it?
4 answers
asked by
sara
3,098 views
Why are titrations using permanganate performed in acid solution?
4 answers
asked by
help
4,718 views
Briefly explain why the transitions associated with the Lyman series correspond to wavelengths in the ultraviolet region of the
4 answers
asked by
natash
3,163 views
Under constant pressure, a system of gases is sealed in a cylinder and then allowed to expand. What can you conclude about the
11 answers
asked by
jessie
3,397 views
Why was a strong base (KOH) used in the synthesis of ferrocene? Why would a strong acid not be a suitable alternative?
5 answers
asked by
dana
2,163 views
6) How many significant figures should be retained in the result of the following calculation?
12.00000 x 0.9893 + 13.00335 x
7 answers
asked by
Loi
15,685 views
How much heat is required to heat 0.1 g of ice at −30 C to steam at 100 C? Use the approximate values below for your
5 answers
asked by
please help !
2,694 views
How many moles of C6H12O6 are formed when 0.250 mole of CO2 is consumed in the
reaction 6 CO2 + 6 H2O C6H12O6 + 6 O2?
5 answers
asked by
joe
5,089 views
If the density of solid iron is 7.87 g/cm3 , what is the packing efficiency of Fe if it adopts a body‑centered cubic unit
5 answers
asked by
Michelle
2,625 views
a considerable amount of heat is required for the decomposition of aluminum oxide.
2Al2O3-> 4Al(s)+ 3O2(g) change in heat= 3352KJ
5 answers
asked by
Skye
6,170 views
For the reaction below, the thermodynamic equilibrium constant is K = 2.30×10−4 at 25 °C.
NH4CO2NH2(s) ⟶ 2 NH3(g) + CO2(g)
5 answers
asked by
kevin
1,311 views
A 2.9 L sample of gas has a pressure of 5 atm and a temperature of 50 °C. What will be the new temperature in Kelvin if the
6 answers
asked by
nene
3,379 views
rank strongest acid to weakest acid?
rank strongest acid to weakest acid H3CNH2 CH3C (triple bond) CH CH2=CHCH3 H20 CH4 i tried
7 answers
asked by
Yoo
4,968 views
What mass of ice at 0°C can be melted by the addition of 1670 joules of heat?
When the temperature is decreased on the following
5 answers
asked by
skye
2,930 views
If a neutral solution of water, with pH = 7.00, is heated to 50 deg C , the pH drops to 6.63.
Does this mean that the
5 answers
asked by
greeny
3,289 views
If 309 J of heat are removed from 10.0 g of ice (specific heat = 2.06 J/g
ºC) at -5.5 ºC, what is the final temperature of the
5 answers
asked by
S
1,496 views
calculate the percent concentration of each of the following solutions
1. 2.78g of NaHCO3 dissolved in enough water to make
4 answers
asked by
SHORNORA
907 views
Which option correctly describes the pattern of reactivity and electronegativity in nonmetals?
Both reactivity and
9 answers
asked by
scay
5,408 views
"Yule logs are simulated wood logs make of compressed paper that burn with a red and green flame.How would you produce a similar
4 answers
asked by
jennifer
1,814 views
the solution with the lowest pH is
A. 1.0 M HF B. 1.0 M HCN C. 1.0 M HCOOH D. 1.0 M CH3COOH and how did you find it?
4 answers
asked by
Saphire
5,863 views
For the equilibrium reaction:
CO(g)+H2O(g)<=>CO2(g)+H2(g) the Keq value at 690°C is 10.0. A mixture of 0.300 mol of CO, 0.300
4 answers
asked by
ami
2,656 views
In order to neutralize the acid in 10.0 mL of 18.0 mol/L sulfuric acid that was spilled on a laboratory bench, sodium
4 answers
asked by
Jennifer
2,565 views
1. under what circumstances is the molecular geometry around a single central atom the same as the electron group geometry
4 answers
asked by
natash
3,460 views
For the reaction below, Kc = 0.154 at 2000 K.
2 CH4(g) ⇌ C2H2(g) + 3 H2(g) A 0.750 L equilibrium mixture at 2000 K contains
4 answers
asked by
kevin
2,250 views
What mass of hydrochloric acid (in grams) can be neutralized by 2.3g of sodium bicarbonate? (: Begin by writing a balanced
4 answers
asked by
stephen
7,802 views
Find the ΔHr0 for the reaction:
Na2CO3(s) +2HNO3(aq) → 2NaNO3(s) +CO2(g) +H2O(l) ΔHr0=+125.7kJ ΔHr0=-67.2kJ ΔHr0=-45.3kJ
5 answers
asked by
Anna
2,261 views
"The percentage of sodium hydrogen carbonate, NaHCO3, in a powder for stomach upsets is found by titrating .275 M hydrochloric
4 answers
asked by
Dan
1,893 views
3.0 mol sample of KClO3 was decomposed according to the equation 2KClO3 = 2KCl + 3 O2 How many moles of O2 are formed assuming
5 answers
asked by
jill
9,445 views
Find the percent by mass of sodium chloride in a 1.15M NaCl solution. The density of the solution is 1.07g/mL.
4 answers
asked by
natash
5,810 views
Arsenic acid (H3AsO4) is a triprotic acid with Ka1 = 5 10-3, Ka2 = 8 10-8, and Ka3 = 6 10-10. Calculate [H+], [OH -], [H3AsO4],
15 answers
asked by
Cab
9,536 views
given that 140.ml of chlorine gas weighs 0.450 g find the density of chlorine in grams per liter(g/liter).
3 answers
asked by
kenny
564 views
Magnesium hydroxide is produced by reacting magnesium oxide with excess water. If the reaction has an expected yield of 81%, how
4 answers
asked by
nela
1,977 views
Which of the following is true about the following reaction when an amount of NO₂ (g) is added to the equilibrium reaction?
4 answers
asked by
mmm
1,013 views
A student dissolved 10.5 g of NH4Cl in 40 mL of water. The temperature of the water changed from 22.5oC to 5.1oC. Calculate the
4 answers
asked by
anaa
916 views
How many pounds does 40.9 in3 of gold weigh? (The density of gold is 19.3 g/cm3, 2.54 cm = 1 in, and 454 g = 1 lb.)
Note these
7 answers
asked by
Anonymous
2,237 views
When 72 grams of a metal at 97.0oC is added to 100.0 grams of water at 25oC, the final temperature is 29.1oC. What is the
6 answers
asked by
Anonymous
3,138 views
A buffer solution is prepared by combining 100 mL of 0.010 M HCOOH and 80 mL of 0.010 M NaHCOO.
Calculate the pH of this buffer
4 answers
asked by
Joe
473 views
AgNO3+NaOH-->AgOH+NaNO3
give me molecular , total ionic and net ionic???"
4 answers
asked by
julia
10,314 views
How would your experimental formula of magnesium chloride “MgClx” have been affected if
your product was not dried completely
6 answers
asked by
charles
4,306 views
The accepted value for the universal gas constant is 0.0821 L atm/mol K. Wat would it be if the pressure was measured in torr
5 answers
asked by
shawn
1,305 views
How many isomers of C2H3Br3 are possible? explain.
12 answers
asked by
natash
3,794 views
The crystal structure of lithium sulfide (Li2S) is pictured here. (Intro 1 figure) The edge length of the unit cell is
7 answers
asked by
Dr Bob plz help
6,320 views
Okay so Im doing a lab on preparation of K3[Fe(C2O4)3]*3H2O The final weight I got 2.835g. How can I find the theoretical yield
6 answers
asked by
Natash
7,055 views
a 6.54 g sample consisting of a mixture of silver nitrate and sodium nitrate is dissolved in water. this mixture then reacts
5 answers
asked by
christine
2,420 views
a 200.0ml sample of nitrogen gas N2 is collected at 45.0 Celsius and a pressure of 610 torr what volume in milliliters will the
4 answers
asked by
shornora
2,320 views
Acrylonitrile and ethyl acetate have the same boiling point: 77.2ºC. In one to two sentences, explain what outcome you would
4 answers
asked by
maf
5,120 views
which of th gases is obtained industrially by fractional distillation. is it ammonia or chlorine or hydrogen or nitrogen?
Nitroge
5 answers
asked by
holly
1,786 views
100 mL of LiNO3, 0.241 M is mixed with 240 mL of 0.618 M Ca(NO3)2. What is the final concentration of NO3- in the solution?
6 answers
asked by
duff
1,516 views
how would you find the ratio of moles of copper produced to moles of iron used is the moles of iron used is .067 and the moles
4 answers
asked by
Kayla
2,479 views
(a) At 800 K the equilibrium constant for I2(g) 2 I(g) is Kc = 3.1 10-5. If an equilibrium mixture in a 10.0-L vessel contains
6 answers
asked by
Hannah
5,550 views
. Antimony pentachloride decomposes according to the following equation.
SbCl5 (g) → SbCl3 (g) + Cl2 (g) Suppose that 10.0 g of
4 answers
asked by
anon
1,394 views
How many moles of O2 contained in 5.25L of a gas at 26 degrees C and 1.2 atm?
5 answers
asked by
grissy
2,262 views
A weather balloon is filled with helium that occupies a volume of 4.33 104 L at 0.995 atm and 32.0°C. After it is released, it
4 answers
asked by
Brianna
1,893 views
The rate data from a chemical reaction shows that doubling the concentration of A with the concentration of B remaining constant
4 answers
asked by
Anonymous
768 views
calculate the number of moles in 0.00655 g of antimony
6 answers
asked by
lala
1,699 views
A metal oxide reacts with water to produce a metal hydroxide. What additional information would you need to determine the
5 answers
asked by
Marc
1,611 views
Which compound listed below has the greatest solubility in water?
CdCO3 Cd(OH)2 CaF2 AgI ZnCO3 how can i tell which on to choose,
4 answers
asked by
jessie
2,402 views
which nuclides would you expect to be stable?
a) 48K b)79Br c)Argon-32
4 answers
asked by
jasmine
2,294 views
use atomic theory to explain why chemical reactions obey the law of conservation of mass
4 answers
asked by
sara
957 views
What happens during the intake stroke of a four-stroke internal combustion engine?
A. The piston moves downward, creating a
4 answers
asked by
jameson
1,846 views
how can i calculate the volume of 3 M HCl needed to change the ph of 75 ml of undiluted buffer by one ph unit (buffer capacity).
7 answers
asked by
opera
1,036 views
Use the chemical reaction to answer the question.
CH4(g) + H2O(g) + energy ⇄ CO(g) + H2(g) Which statement best describes the
5 answers
asked by
burger
1,567 views
What is the pH of a 0.36 M HCl solution?
can someone help plz? I don't know how to go about figuring this out.
7 answers
asked by
Gulzaman
3,790 views
How many moles of ethylene glycol must be dissolved in 500 g of water (Kf = 1.86) to lower the freezing point to -5.00 0C?
4 answers
asked by
Mark
2,147 views
use boyles law to solve for the missing value in the following
P1=0.75atm,V2=435ml,P2=0.48atm, V1=?
4 answers
asked by
amie
1,736 views
What is the wavelength of light associated with the radiation of 7.26 x 10-19 J/photon? (h = 6.63 x 10-34 J • s)
7 answers
asked by
trevor
4,103 views
why cant the molecule C2H6N exists?
5 answers
asked by
rose
3,571 views
In a solution prepared by mixing CH3OH with H2O the major species pesent are
1. a. CH3+, OH, and H2O 2. b. CH3O, H+, and H2O 3.
7 answers
asked by
Mark
13,929 views
in the following total ionic equation, which ions are spectator ions?
Cu2+ (aq) +
4 answers
asked by
julia
3,547 views
Liquid water has a density of 1.00g/mL at 10.0C and .996g/mL at 30.0C. Calculate the change in volume that occurs when 500mL of
4 answers
asked by
ESTR3LLA
1,179 views
Consider the fermentation reaction of glucose: C6H12O6 ----) 2C2H5OH+2CO2
A 1.00-mol sample of C6H12O6 was placed in a vat with
7 answers
asked by
shane
9,441 views
How many grams of NH4Cl must be added to 0.560 L of 1.90 M NH3 solution to yield a buffer solution with a pH of 8.50? Assume no
5 answers
asked by
hannah
3,379 views
At noon on a clear day, sunlight reaches the earth\'s surface at Madison, Wisconsin, with an average power of approximately 4.00
4 answers
asked by
Anonymous
5,035 views
How many grams of NaOH are required to make a 1000ppm solution of Na+ ions
4 answers
asked by
louise
578 views
how many atoms are there in 0.0300 mole of methane molecules?
4 answers
asked by
john
1,640 views
Q: Calculate ℰ° values for the following cells. Which reactions are spontaneous as written (under standard conditions)?
5 answers
asked by
.
5,127 views
A perfectly spherical balloon has a radius of 10.0cm inside a cold room where the temperature hovers around 17.0°C, When the
5 answers
asked by
Jalea
628 views
Use the reaction, which produces ammonia, to answer the question.
N2(g) + 3H2(g) ⇄ 2NH3(g) Which change would happen in the
16 answers
asked by
bill nye the science guy
5,434 views
an energy value of 3.313x10^-19 joules is needed to break a chemical bond. what is the wavelength of energy needed to break the
3 answers
asked by
ashley
1,087 views
in nuclear reactions there is often a measurable difference in the mass of the reactants and the mass of the products that is
3 answers
asked by
ashley
1,038 views
how do you know if a solid can be a hydrat given the mass before and after heating?
if a solid before heating has a molar mass of
3 answers
asked by
ashley
681 views
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