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Chemistry
Page 55
Questions (97,987)
Matter Interactions Unit Test
1 of 131 of 13 Items Question Cobalt has a mass number of 59 and an atomic number of 27. A student
33 answers
asked by
ijwdi
333 views
Matter Interactions Unit Test
3 of 133 of 13 Items Question Use the periodic table to answer the question. An illustration shows
3 answers
asked anonymously
87 views
I'm trying to calculated the rate of reaction
In this lab I took a 50 mL beaker and poured in 10 ml of cold distilled water into
1 answer
asked by
Kate
461 views
The liquid from a car battery was placed in three test tubes. To the first test tube 2 drops of methyl Orange were added, in the
3 answers
asked by
Maggie.K
73 views
Rank these compounds in order of increasing hyroxide ion concentration: weak base, weak acid, strong base, strong acid.
2 answers
asked by
Angie
785 views
In a dissolving metal reduction of an alkyne which of the following is false?
a. The trans alkene is the major product. b. All
3 answers
asked anonymously
112 views
Calculate the standard reduction potential for the following reaction at 25 degrees Celsius
Ag(NH3)2^+(aq) +e^- ==> Ag(s) + 2
2 answers
asked by
Steve
810 views
Molar Heat of Fusion of Ice Experiment.
Does the Temperature of a component of a system [cup of warm water from experiemtn]
3 answers
asked by
Vincent
608 views
Why do we need to polish magnesium before using it in an experiment?
5 answers
asked by
Kace
668 views
Which process does the image illustrate?
(1 point) Responses nucleation nucleation transmutation transmutation chemical change
3 answers
asked by
Blue Berry
75 views
does the addition of a strong acid increase the percent ionization of a weak acid HB?
2 answers
asked by
blair
650 views
Use the equation to complete the activity.
219 86Rn→215 84Po+α The nuclear equation shows the transmutation of a form of radon
3 answers
asked by
Blue Berry
221 views
Why is that absolute ethanol be used in preparing an ester with ethanol as one of the reactants?
My Guess: It will cause
2 answers
asked by
PIN
501 views
There are 3.29g of iodine -126 remaining in a smple originally containing 26.3 g of Iodine - 126 the half life of Iodine - 126
2 answers
asked by
sam
1,091 views
How does acetaldehyde impurity arise in the fermentation?
3 answers
asked by
Kay
1,554 views
Calculate the current that must be passed into a solution of aluminum salt for 1 hour 30minutes in order to deposit 1.5kg of
1 answer
asked anonymously
101 views
a 46.2 mL, .568 M calcium nitrate soln is mixed w/ 80.5 mL of 1.396 M calcium nitrate soln. whats the concentration of final
2 answers
asked by
christine
538 views
What is the purpose of adding alum to water during the water treatment process?
a.to filter and remove large organisms and trash
1 answer
asked by
Mack
991 views
Hexane is a saturated hydrocarbon that exists in liquid form. It burns in air to give CO2 and water
C6H6 (l) + 15/2 O2 → 6 CO2
1 answer
asked anonymously
85 views
Why does hydrogen bond so tightly to oxygen during cellular respiration? (1 point)
It is less electronegative than oxygen O It is
1 answer
asked anonymously
60 views
How do you do the hybridization of CBr4?
3 answers
asked by
erin
3,904 views
When 3.05 moles of CH4 are mixed with 5.03 moles of O2 the limiting reactant is __________.
CH4 + 2O2 �¨ CO2 + 2H2O A) CH4 B)
4 answers
asked by
Janaiby
3,815 views
In the combustion of natural gas according to the equation CH4 + 2 O2 -> CO2 +2 H20, how many grams of water are formed during
3 answers
asked by
Andrew
3,684 views
A student was given a solid containing a mixture of nitrate salts. The sample completely dissolved in water, and upon addition
4 answers
asked by
Neeta
3,654 views
molarity of 0.6N aluminium sulphate is?
4 answers
asked by
sreuhti
3,520 views
Are solutions of the following salts acidic, basic, or neutral? For those that are not neutral, write balanced chemical
4 answers
asked by
Anonymous
2,714 views
when calcium carbonate, caco3(s) is heated, it decomposes to form calcium oxide, cao(s) and carbon dioxide gas. how many liters
3 answers
asked by
Anonymous
2,504 views
How many grams of a solid mixture containing strontium chloride would one need to make 558 mL of a 0.100 M strontium chloride
4 answers
asked by
Anonymous
2,309 views
When 40.0 mL of 1.00 M H2SO4 is added to 80.0 mL of 1.00 M NaOH at 20.00°C in a coffee cup calorimeter, the temperature of the
6 answers
asked by
kamal
2,272 views
The equations for the heats of the formation of copper (I) oxide,Cu2O and copper(II) oxide,CuO are:
2Cu(s) +1/2 O2(g) CuO(s);
2 answers
asked by
felix
2,064 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
1,965 views
What are the reduction potentials of lithium, sodium and potassium?
3 answers
asked by
nathan
1,810 views
what kind of e-pair geometry, molecular geometry, and bond angles does C4H10 exhibit? I'm confused.
4 answers
asked by
natash
1,759 views
Balance the following equation in basic solution. Phases are optional.
I{-}+IO4{-} --> I3{-}+IO3{-}
3 answers
asked by
ACDub
1,708 views
Silicon Carbide, SiC, is prepared by heating silicon dioxide in the presence of graphite. Carbon dioxide is the by-product of
3 answers
asked by
Scott
1,601 views
Find the percentage composition of (NH4)3PO4
What i don't understand is if the mass of the element isnt given how would i
3 answers
asked by
Rose
1,563 views
for Fe + V2O3 -----> Fe2O3 + VO
write the two half reactions and calculate voltage
3 answers
asked by
Anna
1,550 views
What is the molarity of the following solutions?
A. 0.96 g MgCl2 in 500 mL solution B. 9.33 g Na2S in 450 mL solution C. 2.48 g
2 answers
asked by
justin
1,528 views
Chemical Reactions Quick Check
3 of 43 of 4 Items Question Which of the following molecules shows two atoms of hydrogen (H)?(1
1 answer
asked anonymously
79 views
Iron(III) oxide can be reduced by carbon monoxide.
Fe2O3(s) + 3CO(g) 2Fe(s) + 3CO2(g) Use the following thermodynamic data at 298
3 answers
asked by
Bea
1,445 views
help...If exactly 5.0 mL of HNO3 will neutralize 15 mL of 2.0 M NaOH, what is the molarity of the HNO3 solution?
Have no idea
3 answers
asked by
Brad
1,421 views
i have to write chemical formulas and balance them:
nitrogen and oxyen---> nitrogen monoxide N2+02---->2NO nitrogen monoxide and
3 answers
asked by
Anonymous
1,430 views
Which of the following substances would be expected to be the strongest electrolyte (best conductor of electricity) in solution
3 answers
asked by
sara
1,404 views
what is the balanced equation for the reaction that takes place between bromine and sodium iodide
4 answers
asked by
natasha
1,403 views
How many grams does 0.500 moles of CuBr weigh?
3 answers
asked by
Jeanette
1,410 views
Is this the balanced chemical equation for reaction between NaBr and H2SO4?
H2SO4 + NaBr ---> HBr + NaHSO4
3 answers
asked by
Marisol
1,389 views
Consider a beaker of water that has an initial temperature of 25 degree centigrade. when an ionic salt is dissolved in the
4 answers
asked by
Nene09
1,317 views
A mixture of SO3,SO2 and O2 gases is maintained in 10litre flask at which the Kc for reaction is 100 . If number of moles of SO2
4 answers
asked by
snehi kashyap
1,231 views
Calculate Ecell forthe following electrochemical cell at 25 C
Pt(s) |H2(g, 1.00 bar) |H + (aq, 1.00 M) || Pb2+(aq, 0.150 M) |
2 answers
asked by
Lana
1,208 views
Calculate the solubility of silver iodide in a 1.0 M sodium cyanide solution.
Ksp = 8.5 x 10^-17 for AgI Kform = 2.5 x 10^5 for
1 answer
asked by
Erin
1,221 views
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