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Chemistry
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Questions (98,020)
Calculate the total number of F (Fluorine) atoms in 12.15 mol C2HBrClF3. The answer is 2.195 x 10^25 atoms, but I am not sure
6 answers
asked by
Bob
7,200 views
1. Which statement is true about the following molecule? (1 point)The molecule is composed of four atoms.The molecule contains
94 answers
asked by
cIATA
24,706 views
A solution of H2SO4(aq) with a molal concentration of 8.01 m has a density of 1.354 g/mL. What is the molar concentration of
7 answers
asked by
Jhanvi
13,105 views
A compound is found to be 51.39% carbon, 8.64% hydrogen, and 39.97% nitrogen. It has a molecular molar mass of 140.22 g/mol.
5 answers
asked by
spartan
4,053 views
how many "particles in solution" will form from each sucrose (C12H22O11) molecule added to water? Explain.
I don't understand
5 answers
asked by
Laura
9,176 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
7,600 views
How many mL of 18 M H2SO4 are required to react with 250 mL of 2.50 M Al(OH)3 if the products are aluminum sulfate and water?
5 answers
asked by
Anna
4,579 views
atomic numbers that add up to 200.
11 answers
asked anonymously
910 views
Which is true about distillation? (1 point)
It uses semipermeable membranes to filter out particles. It removes mainly large
1 answer
asked anonymously
80 views
1. If 29.0 L of methane, CH4, undergoes complete
combustion at 0.961 atm and 140°C, how many liters of each product would be
6 answers
asked by
Anonymous
7,191 views
What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.370 V?
Given: A voltaic cell consists of a
5 answers
asked by
Maria
5,867 views
What would the potential of a standard hydrogen (S.H.E.) electrode be if it was under the following conditions?
[H+] = 0.38 P(H2)
7 answers
asked by
Molu
14,434 views
Complete the Bronsted lowry reactions
HPO42-+H+<--> HPO42-+OH-<-->
7 answers
asked by
Sharon
16,614 views
how do you solve this problem??
What is the original molarity of a solution of formic acid (HCOOH) whose pH is 3.26 at
5 answers
asked by
jin
7,795 views
What mass of sulfuric acid, H2SO4, is required to react with 1.27 g of potassium hydroxide, KOH? The products of this reaction
4 answers
asked by
Angel Wills
3,554 views
In the REDOX reaction in basic solution
Zn-->Zn(OH)4+H2 I know that the first half reaction is 4H20+Zn-->Zn(OH)4 +4H+e but the
7 answers
asked by
george
9,416 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
4,779 views
If Ka for HNO2,=4.5x10-4, find the [H+] a 0.9 M HNO2 solution.
5 answers
asked by
Kathy
4,631 views
A student prepares a 0.28 M solution of acetic acid. If the Ka of the acid is 1.76 x 10^-5, then what is the pH of the solution?
4 answers
asked by
HQade
2,386 views
What is the pH of a 0.25 M acetic acid solution if the Ka of acetic acid is 1.8 x 10-5?
2.67 0.60 5.34 11.33 I got A, 2.67. I
5 answers
asked by
Jason
3,296 views
What is the solubility of PbI2 in 0.4 M KI given the solubility constant of PbI2 is 7.1 x 10-9
a. 3.5 x 10-3 M b. 1.2 x 10-3 M c.
6 answers
asked by
Christine
3,187 views
Imagine a graph. The x-axis is labeled “time” and is measured in seconds, and the y axis is labeled “potential energy”
5 answers
asked by
Garlbread
1,342 views
The Ksp for nickel(II) hydroxide is 5.47E-16. What is the base dissociation constant for nickel(II) hydroxide?
So I started off
5 answers
asked by
a Canadian
2,585 views
Calculate the number of atoms of chlorine present in 7.45g of KCL
5 answers
asked by
Daisy
2,969 views
4. Vitamin C, M= 176.12 g/mol, is a compound of composed of carbon, hydrogen, and oxygen. Vitamin C is found in many natural
5 answers
asked by
IRA
4,347 views
If 1.0 g samples of each compound were
dehydrated, which sample would lose the greatest mass of water? Molar Masses: LiCl* H2O=
4 answers
asked by
Anonymous
1,642 views
Hydrochloric acid is typically purchased in a relatively highly concentrated form and then diluted by adding slowly to water to
4 answers
asked by
Kalai
2,297 views
An isotope of sodium has a half-life of 20 hours. Suppose an initial sample of this isotope has mass 10 grams. The amount of the
5 answers
asked by
Anonymous
1,683 views
Which of the following does NOT happen when vinegar and baking soda react?
true or False?
6 answers
asked by
Marcus
1,732 views
Write the balanced equation for vandadium (II) oxide with iron (III) oxide results in vanadium (V) oxide and iron (II) oxide.
2VO
5 answers
asked by
Hayden
5,780 views
The voltage generated by the zinc concentration cell described by,
Zn(s)|Zn2+ (aq, 0.100 M)||Zn2+ (aq, ____ M)|Zn(s) is 24.0 mV
5 answers
asked by
Katherine
18,676 views
Two cells are connected in series . One contains AlCl3, and the other contains AgNO3 as the electrolytes. What mass of Ag is
5 answers
asked by
Masre
2,015 views
Select the statements that correctly describe buffers.?
1) The pH of a buffer solution does not change significantly when any
5 answers
asked by
Aria
10,541 views
A 500 mL metal cylinder holding 0.100 moles of helium gas is known to rupture at a pressure of 10 atmospheres. At what
7 answers
asked by
Thao
6,744 views
For the following reaction, the partial pressures are listed in the table:
Substance Equlibrium H2S 5.4 I2 1.2 HI 0.43 S 7 If the
7 answers
asked by
jenny
2,581 views
Good day,
Regarding ICE tables, how would you know which x's would be positive or negative for the Change row? I've heard to
5 answers
asked by
Dijames
1,663 views
In an experiment, a student mixes equal volumes of 0.0020M Pb 2+ ions with 0.0040M I- ions. The trial ion product is?
PbI2 <-> Pb
6 answers
asked by
sh
1,880 views
3 moles C6H12O6 in 100 ml equals what molarity?
7 answers
asked by
Katie
1,816 views
What is the boiling point elevation of a solution of NaNO3 (85.0 g/mol, complete dissociation) made by dissolving 10.0 g of
4 answers
asked by
Anon
3,047 views
A lake may be polluted with Pb2+ ions. what precipitation reaction might you use to test for the presense of Pb2+?
4 answers
asked by
Josh
1,817 views
MnO4–(aq) + Cl–(aq) Mn2+ + Cl2(g) (unbalanced)
i. Write the reduction and oxidation half-reactions (without electrons). (.5
7 answers
asked by
princess
27,359 views
Can the law of conservation of mass be applied when cooking? In one to two sentences, explain why.
7 answers
asked anonymously
82 views
Calculate the mass of Mg metal required to consume 2560g of CO2 in the reaction. 2Mg+CO2_2MgO+C
6 answers
asked by
Asad khan
4,912 views
The titration of 25.00ml of 0.1000m hypochlorous acid (3.5x10^-8) with 0.1500m NaOH.
(a). What is the pH before any acid is added
4 answers
asked by
Abraham
1,509 views
A typical soap molecule consists of a polyatomic anion associated with a cation. The polyatomic anion containd hydrogen, carbon
5 answers
asked by
celina
3,168 views
How many grams of c6h12o6 are needed to form 7.50g of c2h5oh
5 answers
asked by
Winnie
5,570 views
A bottle of a certain ceramic tile cleanser, which is essentially a solution of hydrogen chloride, contains 130 g of HCl and 750
6 answers
asked by
jen
4,454 views
Some reactions that are predicted by their sign deltaG to be spontaneous at room temperature do not proceed at a measurable rate
6 answers
asked by
kali
3,411 views
Complete and balance the reaction
Al(s) + Pb2+(aq) ! using the smallest possible integers. I got: 2Al(s) + 3Pb2 ==> Al2Pb3
6 answers
asked by
brian
6,007 views
Write half equation s for the following reaction.
Cu(s)+2AgNO3(aq) produces Cu(NO3)2(aq)+2Ag.
5 answers
asked by
Joy
3,654 views
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