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Chemistry
Page 8
Questions (96,930)
The equilibrium constant, Keq, for the reaction:
SO3(g) + NO (g) ⇋ NO2 (g) + SO2 (g) was found to be 0.500 at a certain
4 answers
asked by
arshly
1,442 views
E is a solution of a dibasic acid H2x containing 3.25g per 250cm3 solution f is 0.120 mo/dm3 kott solution
4 answers
asked by
awaji
512 views
If 0.500 mol of nitrogen gas occupies a volume of 11.0 L at 0°C, what volume will 2.15 mol of nitrogen gas occupy at the same
4 answers
asked by
Dna
1,930 views
CALCULATE THE PERCENTAGE OF MASS BY NITROGEN IN TRIOXONITRATE (V)ACID
4 answers
asked by
CHISOM
847 views
laboratoories order hydrochloric acid as a concentrated solution (e.g. 36% W/V). what initial volume of concentrated laboratory
4 answers
asked by
TARA
1,069 views
What will be observed when aqueous silver trioxonitrate (v) is added to aqueous sodium bromide
4 answers
asked by
Akinlo
1,273 views
what is the pH of a solution prepared by adding 0.259g of ammonium chloride to 115mL of water? Kb of NH3 is 1.8x10^-5
3 answers
asked by
Jill
1,476 views
Scientists used radioactive hydrogen to make water. They grew plants using the radioactive water. What happened to the
1 answer
asked anonymously
173 views
Construct the following diagrams and label them.An electrochemical cell with a salt bridge using copper and zinc electrode and
1 answer
asked by
Asu
20 views
observation made when chlorine is bubbled through sodium iodide
4 answers
asked by
value mwende
4,569 views
The value of Kb for HPO₄²- is?
A. 2.2*10^-13 B. 6.2*10^-8 C. 1.6*10^-7 D. 4.5*10^-2 I don't get how to solve this.
10 answers
asked by
Shreya
5,351 views
HOW TO PREPARE 60PPM OF POTASSIUM DICHROMATE
3 answers
asked by
ELEZABETH
1,764 views
When an element is burnt in excess oxygen, is the oxide formed always:
1. a crystalline solid 2. greater in mass than the element
5 answers
asked by
Monica
2,780 views
How many grams of Cl are in 38.0g of CF2Cl2? I really want to figure out how to do it. I can't seem to understand any of this
4 answers
asked by
Luis
9,965 views
the volume of a sample of gas is 650.ml at STP. what volumes will the sample occupy at 0.0degrees celsius and 950.torr???
is it
5 answers
asked by
Andy
1,888 views
Methanol (CH3OH) is used in the production of many chemicals. methanol is made by reacting carbon monoxide and hydrogen at high
5 answers
asked by
Skye
5,320 views
Determine [H30+], [OH-], and pH.
A solution that is 0.655% HNO3 by mass (assume a density of 1.01 g/ mL for the solution).
4 answers
asked by
Nevaeh
5,864 views
Which pairs of liquids are likely to be miscible?
a. H2O and CH3OH b. H2O and C6H6 c. C6H14 and CCl4 d. CCl4 and CH4OH
6 answers
asked by
Kan
6,477 views
Hi! I am taking the Unit 8 Lesson 10 chem test now and I have a C in this class so I need to get all the answers correct... If
7 answers
asked by
Yarielis
2,529 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
2,425 views
In order to analyze the waste water containing Co^2+ from a manufacturing process, 1.0L of water was evaporated to 10.0mL, then
5 answers
asked by
John
2,781 views
Determine the mass % (m/m) of a NaCl solution if 58.5 grams of NaCl was dissolved in 50 ml of water (assume the density of water
4 answers
asked by
Ravisha
1,644 views
some reactions that are considered to be spontaneous at low temperatures will not proceed at a measurable rate or form any
4 answers
asked by
Anonymous
4,163 views
The double displacement reaction of aluminum sulfate and calcium hydroxide.
5 answers
asked by
hannah
4,383 views
Which are particles that make up the nucleus of an atom select the two correct answers
3 answers
asked by
Garris
252 views
Calculate the number of grams of dextrose in 250mL of D5W.
I know that the answer is 12.5g, but I do not understand the work.
5 answers
asked by
Elie
9,698 views
If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the
28 answers
asked by
Anonymous
10,819 views
Sugar is a pure substance, but it is not an element.
Which sentences support this statement? Hint: Consider the definition of an
5 answers
asked by
Dianni
4,931 views
The nonmetals in Groups 6A and 7A ____.
a. lose electrons when they form ions b. have a numerical charge that is found by
5 answers
asked by
Maye
9,955 views
A bone is found to have 45% of the original amount of carbon 14. If the half life of carbon is 5600 years, how old is the bone.
W
5 answers
asked by
Hannah
2,054 views
How many moles of oxygen atoms are there in 2 moles of CuSO4?
5 answers
asked by
John
1,041 views
Given the table below predict the numerical value of the standard cell potential for the reaction:
2 Cr(s) + 3 Cu2+(aq) 2
4 answers
asked by
Anya
3,519 views
Which statement describes a chemical reaction at equilibrium?
A. The forward reaction happens slightly faster than the reverse
13 answers
asked by
emma
9,715 views
At 40 degrees Celsius, the value of Kw is 2.92 X 10^-14
a.) calculate the [H+] and [OH-] in pure water at 40 degrees celsius
7 answers
asked by
Rebekah
13,429 views
When 20.5g of methane and 45.0g of chlorine gas undergo a reaction that has a 75.0% yeild, what mass of chloromethane forms?
6 answers
asked by
Sam
7,108 views
Why is CH3I have a higher boiling point than CH3Cl?
I thought, since Cl is more electronegative, it withdraws more electron
5 answers
asked by
Vic
12,209 views
Describe how you would prepare a pure dry sample of calcium chloride in the laboratory
6 answers
asked by
Grace m
4,655 views
A 200 mL sample of 1.0 M nitric acid is added to 1.0 M water. What is the resulting pH?
5 answers
asked by
Anonymous
2,853 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
2,379 views
The solubility product constant, Ksp, for nickel (II) carbonate, NiCO3, is 1.3 x 10-7 at 25C.
a. Write the balanced chemical
5 answers
asked by
...
3,370 views
P4 + HNO3 = H3PO4 + NO2 + H20 by partial method balancing
5 answers
asked by
Durgesh
6,240 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
3,649 views
a. Calculate the expected freezing-point depression of a 0.200 m KNO3 solution.
b. Will the value you calculated match the actual
5 answers
asked by
Drew
6,673 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
3,723 views
If one mole of hydrocarbon contain 4g of hydrogen and it molar mass is 40g.what is the homologous series of the compound
5 answers
asked by
fatima
2,089 views
The equation below shows the incomplete combustion of ethene.
C2H4(g) + 2O2(g) ==> 2CO(g) + 2H2O(g) If 2.70 mol C2H4 is reacted
5 answers
asked by
Keith
7,563 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
8,078 views
State what happens on bubbling chlorine into a solution of iron (ii) chloride explain with equation
6 answers
asked by
Anonymous
4,581 views
Determine the concentration of CO32- ions in a 0.18 M H2CO3 solution. Carbonic acid is a diprotic acid whose Ka1 = 4.3 × 10-7
5 answers
asked by
Veronica
11,876 views
Calculate the pH that results when the following solutions are mixed
1. 35 mL of 0.20 M formic acid 𝐻𝐶𝑂𝑂𝐻,
5 answers
asked by
I need your help thanks
4,998 views
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