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Chemistry
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Questions (97,973)
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
24,705 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
4,050 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
7,598 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
4,776 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
3,294 views
atomic numbers that add up to 200.
11 answers
asked anonymously
907 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
7,189 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
5,866 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
14,430 views
Complete the Bronsted lowry reactions
HPO42-+H+<--> HPO42-+OH-<-->
7 answers
asked by
Sharon
16,611 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
9,169 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
9,415 views
If Ka for HNO2,=4.5x10-4, find the [H+] a 0.9 M HNO2 solution.
5 answers
asked by
Kathy
4,629 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
2,385 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
3,186 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
1,340 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
2,583 views
Calculate the number of atoms of chlorine present in 7.45g of KCL
5 answers
asked by
Daisy
2,966 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
4,345 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
1,640 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
2,296 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
1,680 views
Which of the following does NOT happen when vinegar and baking soda react?
true or False?
6 answers
asked by
Marcus
1,730 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
13,098 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
7,790 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
18,674 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
6,741 views
The equation shows the complete combustion of propane.
C3H8(g) + 5O2(g) --> 3CO2(g) + 4H2O(i) Which statement is correct? A)
4 answers
asked by
Muhammad Haris
2,837 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
2,579 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
1,660 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
4,571 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
3,041 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
1,815 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
27,355 views
Can the law of conservation of mass be applied when cooking? In one to two sentences, explain why.
7 answers
asked anonymously
81 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
4,907 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
the reaction BrO3- + 3SO3 2- ---> has the rate law r= k[BrO3-][SO3 2-]. what is the order of the reaction with the respect to
7 answers
asked by
Tarkan
2,733 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
3,165 views
How many grams of c6h12o6 are needed to form 7.50g of c2h5oh
5 answers
asked by
Winnie
5,566 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
4,452 views
Hydrochloric acid and sodium hydroxide react to produce water and sodium chloride in an endothermic reaction. Which statement
5 answers
asked by
Anonymous
2,150 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
3,410 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
6,006 views
Liquid water can be separated into hydrogen gas and oxygen gas through electrolysis. 1 mole of hydrogen gas and 0.5 moles of
55 answers
asked by
hunter
9,845 views
Write half equation s for the following reaction.
Cu(s)+2AgNO3(aq) produces Cu(NO3)2(aq)+2Ag.
5 answers
asked by
Joy
3,652 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
5,774 views
how many moles of iron would have been used up if 45.0g of copper were to be produced?
is it # mols Fe = 45.0gCu x 1mol/63.5g =
7 answers
asked by
Lily
3,279 views
when propane gas C3H8, is burned with oxygen, the products are carbon dioxide and water. Write an unbalanced formula equation
6 answers
asked by
kate
10,314 views
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