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Chemistry
Page 6
Questions (96,336)
Calculate temperature when 0.50L sample or gas at 1.0 atm and 25degrees C is compressed to 0.05L of gas at 5.0 atm.
6 answers
asked by
la
2,492 views
25g of NH3 is mixed with 4 moles of O2 in given reaction.
4NH3(g)+5O2(g)-->4NO(g)+6H2O(1) <--- what mass of NO is formed? What
7 answers
asked by
Erawd
6,577 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
13,052 views
The oxidation number of sulphur in CuSO4.5H2O is ......
12 answers
asked by
Anonymous
8,652 views
From XNH3+YO2=ZNO+QH2O. find the value of Z?
10 answers
asked by
Chelly
3,385 views
A Ca(OH)2 solution has a pH of 8.0. Determine the values of [H3O+], [OH– ], and [Ca(OH)2] for the solution
4 answers
asked by
diana
3,860 views
72.1 g of steam is reacted with excess ethene (C2H4) according to the following reaction. Determine the maximum mass (in grams)
6 answers
asked by
naj
1,664 views
The equilibrium constant (Keq) is the ratio of ____ concentrations to ____ concentrations at equilibrium, with each
5 answers
asked by
MEGAN!!!!!!!!!!!
2,957 views
what volume of 0.120 M NaOH must be added to 100 ml of 0.100 M NaHC2O4 to reach ph of 4.70?
H2C2O4 Ka1 = 5.9 x 10-2 HC2O4^- Ka2 =
5 answers
asked by
Steve
4,510 views
Bones are mostly calcium phosphate. Calcium chloride reacts with potassium phosphate to form calcium phosphate and potassium
4 answers
asked by
mandi
6,311 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
18,622 views
Silver chloride, AgCl, would be least soluble in
A.1.0M HCl B.1.0M NaNO3 C.1.0M ZnCl2 D.1.0M AgNO3 and why? thx
5 answers
asked by
saphire
7,525 views
A direct-current power supply of low voltage (less than 10 volts) has lost the markings that indicate which
output terminal is
5 answers
asked by
Confused
3,810 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
4,990 views
Calculate the percentage in ethanedioic acid crystals, (COOH)2.2H2O
7 answers
asked by
Jojo
1,715 views
why rate of forward reactionns slow down when a reversible reactions approches equilibrium stage?
4 answers
asked by
kashaf
409 views
A particular metallic element, M, has a heat capacity of 0.36 J*g*K, and it forms an oxide that contains 2.90 grams of M per
12 answers
asked by
.
4,180 views
The graph shows the titration curve for 25.0mL of an aqueous solution of B titrated with 0.100MHCl. Which of the following best
5 answers
asked by
qwerty
3,660 views
I really need help answering these questions.
A sample of CO2 gas with a mass of 0.30 g is placed in a 250 mL container at 400 K.
5 answers
asked by
Lisa
2,620 views
Am asking on how a solid sample of lead ii chloride can be prepared using the following reagents dilute nitric acid, dilute
4 answers
asked by
Monicah
1,275 views
Just wanted to make sure I did this right.
Use the equation to answer the question. FeCl3 +3NH4OH—-> Fe(OH) 3 +3NH4Cl Which
4 answers
asked by
:)
428 views
A 30.75 mL sample of 0.450 MKOH was titration with an unknown concentration of HCl. The endpoint was reached when 29.35 mL of
9 answers
asked by
Rebecca
1,606 views
Even after twenty years of use, most quarters have the same shiny appearance that they did when they were minted. Most pennies,
4 answers
asked by
Homeworktaker
1,318 views
What is the chemical formula for slime using glue and borax?
3 answers
asked by
Bren
1,029 views
sharon combines potassium (K) and water (H2O), producing potassium hydroxide (KOH) and hydrogen(H2), as shown in the chemical
1 answer
asked anonymously
64 views
For the reaction seen here:
Select all statements that apply. Responses The addition of iron (III) ions will result in a shift to
1 answer
asked anonymously
23 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
5,345 views
A 25.0 mL aliquot of vinegar was diluted to 250 mL in a volumetric
flask . Titration of 50 mL aliquot of the diluted solution
4 answers
asked by
reema
2,516 views
HOW TO PREPARE 60PPM OF POTASSIUM DICHROMATE
3 answers
asked by
ELEZABETH
1,759 views
"How many grams of NH3 can be produced from the reaction of 28 g of N2 and 25 g of H2?
N2 + 3H2 ---> 2NH3 ==> 28 g N2 x (1 mol
11 answers
asked by
Emily
27,691 views
Here's the answers for the quick check I took.
1. The system would shift toward the products to oppose the change. 2. adding an
8 answers
asked by
Tablesaur
1,892 views
A chemist wants to prepare a stock solution of H2SO4 so that a sample of 20.00mL will produce a solution with a concentration of
4 answers
asked by
Anonymous
4,102 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
5,861 views
2cr(s) + SnCL4(aq) -->
can this reaction occur if so write the balanced equation if it doesnt explain why
5 answers
asked by
mel
2,457 views
Scientists in 1962 became very excited when they were able to create xenon tetrafluoride. Why was this an unusual feat? Why was
4 answers
asked by
Caitlyn
2,555 views
a volume of 50 cm of oxygen was exploded in 50cm of carbon iv oxide. what was the volume of the residual gas at room
2 answers
asked anonymously
171 views
Practical: test for aldyhides and ketones using KMnO4 and Tollen's test reagent
Aim: investigations unknown samples A,B and C
26 answers
asked by
Galmai Simon
162 views
Determine pH of each solution:
0.20 M KI i don't know how you know if you use.. K+H2O->KOH + H or... I- +H2O--> HIO +H Im
5 answers
asked by
ALISON
2,134 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
4,925 views
Write half equation s for the following reaction.
Cu(s)+2AgNO3(aq) produces Cu(NO3)2(aq)+2Ag.
5 answers
asked by
Joy
3,627 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
9,951 views
make 200.0 mL of a pH 5.00 buffer from 0.200 M acetic acid and 0.100 M sodium acetate. Calculate the volume of 0.200 M acetic
4 answers
asked by
GEN CHEM
858 views
the molar heat of vaporization for water is 40.79 kJ/mol. How would you express this heat of vaporization in joules per gram.
5 answers
asked by
Sienna
3,005 views
5. The density of a solution of 3.69 g KCI in 21.70 g H2O is
1.11 g/mL. Calculate the molality of KCI in the solution.
5 answers
asked by
TJ delattre
795 views
Enter the net ionic equation for the reaction of aqueous sodium chloride with aqueous silver nitrate
22 answers
asked by
ej
36,575 views
write the balanced equation for the ionization of the weak base pyridine, C5H5N, in water
8 answers
asked by
Kristin
35,364 views
A buffer is prepared using acetic acid, CH3COOH, (a weak acid) and sodium acetate, CH3COONa (which provides acetate ions, the
6 answers
asked by
kevin
3,576 views
Identify any incorrect formulas. explain your answer.
a. Mg2(SO4)3 b. Rb3As c. BeCl3 d. NaF
6 answers
asked by
Minny
12,533 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
3,642 views
Butyric acid (HC4H7O2) is a weak acid with the stench of rancid butter
1.) write the equation for the dissociation of HC4H7O2 in
4 answers
asked by
Ashley
7,902 views
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