Questions and answers by

Joseph

Questions (380)

why is temperature of H2O2 measured in the graduated cylinder?
1. 3 answers
2. 382 views
Balancing redox reactionsBalance in acid solution 1. PH3+ I2 -> H3PO4 + I- 2. ClO3- + Cl- -> Cl2 Balance in basic solution Se ->
1. 0 answers
2. 769 views
I need help with balancing redox reactionsBalance in acid solution: 1) PH3+ I2 --> H3PO4+ I- 2) ClO3- + Cl- --> Cl2
1. 0 answers
2. 534 views
“There are many social and cultural contexts you interact with that strongly influence development. These contexts include
1. 1 answer
2. 610 views
Balance in acid solutionPH3+ I2-> H3PO4+ I-
1. 0 answers
2. 466 views
write the net ionic equation for the following :2CuCl(aq)-> CuCl2(aq)+ Cu(s) 4NaCl(aq)+2H2SO4(aq)+MnO2(s)->
1. 1 answer
2. 1,928 views
Give the conjugate acid of the following bases: a) NH2-, b) CO3 ^2-, c) HS-, d) OH-
1. 2 answers
2. 1,712 views
The normal melting and boiling point of O2 are -218C and 49.8atm. a)Sketch the phase diagram for O2. b) Which is denser, O2(S)
1. 4 answers
2. 973 views
On top of one of the peaks in Rocky Mountain National Park the pressure of the atmosphere is 500.torr. Determine the boiling
1. 3 answers
2. 514 views
which would have a lower melting point, C3H6 or CH30H? explain please!
1. 1 answer
2. 503 views
NH2-,NH3, and NH4+ have H-N-H bond angles of 105, 107, and 109. Explain this variation in bond angles
1. 3 answers
2. 1,625 views
NH2-, NH3, and NH4+ have H-N-H bond angles of 105, 107 and 109. Explain this variation in bond angles.
1. 2 answers
2. 9,512 views
which would have a lower melting point, C3H6 or CH30H? explain.
1. 1 answer
2. 476 views
Consider the following reaction:2Na + Cl2  2NaCl ΔH = -821.8 kJ (a) Is the reaction exothermic or endothermic? (b) Calculate
1. 0 answers
2. 970 views
A small “coffee cup” calorimeter contains 110. g of H2O at 22.0°C. A 100. g sample oflead is heated to 90.0°C and then
1. 2 answers
2. 1,645 views
A gaseous mixture of O2, H2, and N2 has a total pressure of 1.50 atm and contains 8.20 gof each gas. Find the partial pressure
1. 1 answer
2. 2,610 views
Sterling silver, an alloy of silver and copper, contains 7.5 percent copper by mass and hasa density of 10.3 g/cm3. How many
1. 0 answers
2. 758 views
Calculate the molarity of the solution produced by mixing (a) 50.0 ml of 0.200 M NaCland 100.0 ml of 0.100 M NaCl;
1. 1 answer
2. 653 views
write a pargraph of about 50 words on the topic job seeking is a task that needs courage as well as patience
1. 1 answer
2. 426 views
cos x sin x
1. 2 answers
2. 500 views
Selling shirts. If a vendor charges p dollars each forrugby shirts, then he expects to sell 2000 - 100p shirts ata tournament.a)
1. 1 answer
2. 492 views
Hi, I have the following question:1. The index of refraction for a prism is given by the equation: n = 1.58 − (6.41 x 10^4)λ
1. 1 answer
2. 525 views
The typical resistance of the tungsten filament of a 60 watt incandescent light bulb when it is turned off is 24 ohms and its
1. 2 answers
2. 2,077 views
The nominal resistance R of the resistor used in this experiment was printed on the resistor by the manufacturer. According to
1. 3 answers
2. 726 views
The normal melting point of copper is 1357 K and heat of fusion of Cu is 13.05 KJ.How much heat, in kilojoules, is evolved when
1. 1 answer
2. 1,812 views
Benzene has a heat of vaporization of 30.72 kj/mol and a normal boiling point of 80.1 degrees celcius.At what temperature does
1. 2 answers
2. 2,424 views
Ethanol has a heat of vaporization of 38.56 KJ/Mol. And a normal boiling point of 78.4 degrees celcius.WHAT is the vapor
1. 3 answers
2. 2,363 views
Benzene has a heat of vaporization of 30.72 kj/mol and a normal boiling point of 80.1 degrees celcius.At what temperature does
1. 2 answers
2. 1,765 views
Ethanol has a heat of vaporization of 38.56 KJ/Mol. And a normal boiling point of 78.4 degrees celcius.WHAT is the vapor
1. 3 answers
2. 1,138 views
This is the problem:The following HTML code fragment contains a reference to an image file called frog.gif and with alternate
1. 7 answers
2. 1,068 views
marbury vs madisonmcculloch vs Maryland dred scott decision plessy vs ferguson brown vs board of education roe vs wade bowers vs
1. 1 answer
2. 632 views
Write a 200- to 300-word description of the four time value of money concepts: present value, present value of an annuity,
1. 0 answers
2. 998 views
What is the outer edge of a cheek cell called? please urgent homework due tommorow
1. 0 answers
2. 586 views
Under what situation would one or more solutions of a rational equation be unacceptable? Give an example.
1. 0 answers
2. 401 views
Joe and Anna collect football cards.The greatest common factor of the numbers of cards in their collections is 15.Altogether Joe
1. 1 answer
2. 656 views
identify fraction relationships 5/10 of 20=
1. 2 answers
2. 190 views
identify fraction relationship of 5/10 of 20=
1. 2 answers
2. 309 views
Can you check my answers thanks.Directions: State which statements are true and false. 1. Carbon atoms can bond together in
1. 0 answers
2. 594 views
Who was the man who championed the conquered province view of the South in the Reconstruction period abd wanted to give each
1. 3 answers
2. 416 views
the perimeter of a rectangle is 24 inches. find the dimensions if the length is 3 inches greater than its width
1. 1 answer
2. 1,003 views
how do you find additional points on a line with a slope of 1/2 and a given point of (7,-2)?
1. 0 answers
2. 388 views
how do you find additional points on a line with a slope of 1/2 and a given point of (7,-2)?im sorry but i still cant get an
1. 1 answer
2. 609 views
please help me with this problem? I don't know how ro do it. please show me step by step.Write the slope intercept form the
1. 3 answers
2. 576 views
please help me with this problem? I have the answer but I need to know how to do it.Write the slope intercept form the equations
1. 2 answers
2. 455 views
For the reactions that occurred spontaneously in the individual tables, balance these reactions assuming they are in an acidic
1. 1 answer
2. 712 views
"However, the Ag^+ + I^- reacted to give AgI (but that is not a redox reaction) and if they reacted why didn't Br^- and Ag^+?"Hi
1. 0 answers
2. 510 views
Reaction 1: I2(aq)Cu^+2(aq) Ag^+(aq)Br2(aq)Column 1---Column 2---Column 3---Column 4---Column 5 I-(aq)---X---X---T---T
1. 9 answers
2. 1,355 views
I found a pattern and I was wondering if it applies to all reactions.The more times there is evidence of a redox reaction
1. 1 answer
2. 939 views
"Ag(s) reacts with none of the 4 (solutions of Ag^+2, Pb^+2, Cu^+2, Zn^+2}. So Ag(s) goes at the bottom of the table for now
1. 2 answers
2. 463 views
Hi I sent this question a few days ago but did not get it answered I think it may have been mixed up in the jumble.Purpose: The
1. 7 answers
2. 552 views
Hi I sent this question a few days ago but did not get it answered I think it may have been mixed up in the jumble.Purpose: The
1. 0 answers
2. 499 views
Purpose:The purpose of this lab exercise is to construct a table of relative strengths of oxidizing and reducing agents. By
1. 0 answers
2. 669 views
Lab: Creating a Redox TablePurpose: The purpose of this lab exercise is to construct a table of relative strengths of oxidizing
1. 4 answers
2. 737 views
19 mL of 0.50 mool/L NaOH which is standardized becomes titrated alongside 24 mL of 0.44 mol/L acetic acid. Determine the pH of
1. 1 answer
2. 704 views
An AgNO3 solution (44 mL/0.44 M) has been mixed with an NaCl solution (83 mL/1.35x 10^-2 M)a)Determine the ion product of the
1. 2 answers
2. 1,054 views
22 mL of 0.37 mol per litre acetic acid is titrated by way of a standardized 0.29 mol/L KOH solution. Calculate the pH of the
1. 2 answers
2. 1,380 views
Calculate the pH of a 1.33 mol/L solution of HCN is the Ka value of HCN is 6.2x10^-12
1. 1 answer
2. 562 views
what kitchen utensil or equipment starts with the letter "A"
1. 3 answers
2. 446 views
I'm having trouble with this one.Problem: Find the equations for the planes parallel to x+2y-2z=1 and two units away from it.
1. 2 answers
2. 615 views
Construct a Truth Table for the given statement:1. p implies ~(pVq) 2. ~(p AND q)Vp
1. 0 answers
2. 480 views
Construct a Truth Table for the given statement:1. p implies ~(pVq) 2. ~(p AND q)Vp
1. 0 answers
2. 969 views
Construct a Truth Table for the given statement:1. p implies ~(pVq) 2. ~(p AND q)Vp I thought this is how to do it, but my
1. 0 answers
2. 544 views
Construct a Truth Table for the given statement:1. p implies ~(pVq) 2. ~(p AND q)Vp I thought this is how to do it, but my
1. 1 answer
2. 693 views
Construct a Truth Table for the given statement:1. p implies ~(pVq) 2. ~(p AND q)Vp I thought this is how to do it, but my
1. 3 answers
2. 1,422 views
Why do Phoenix and Athens have a similar Temperature? Why do Philadelphia and London have a similar temperature?Please help!!!
1. 4 answers
2. 457 views
I have a problem understanding how to set this problem up and get a solution:Consider a binomial experiment with n = 10 and p =
1. 1 answer
2. 447 views
For the past ten years, DWI has wanted to develop the lucrative Iraqi oil reserves for its exploration, drilling, refining, and
1. 0 answers
2. 552 views
Compare the American legal system to the international legal environment of business.
1. 0 answers
2. 1,124 views
For the past ten years, DWI has wanted to develop the lucrative Iraqi oil reserves for its exploration, drilling, refining, and
1. 0 answers
2. 576 views
i need help completing these tasks...can u guys offer help on each of these taskS? thanks...task 1: describe how key aims and
1. 0 answers
2. 562 views
Why is WACC important to an organization?Thank you for using the Jiskha Homework Help Forum. It is difficult to calculate the
1. 0 answers
2. 728 views
what or how do you get at least one equivalent fraction1/4 = ___ what about 30/120 ? I don't know.. How did you get that?
1. 3 answers
2. 1,211 views
A=1/2H(B+b) Solve for HLet's start by getting rid of the fraction. Multiply both sides by 2 (whatever operation you do to one
1. 1 answer
2. 488 views
I need to know the phonetic spelling of the name of the African God known as Sagbata. He was the god of smallpox.Yoruba It looks
1. 0 answers
2. 449 views
What number is 100,000 greater than 99,999,999? In which places did the digits change?write 10 multiples of 9 What number is
1. 0 answers
2. 620 views
Use place value to find each missing number. Explain4,657,839; 4,657,939; _,_ _ _, _ _ _; 4,658,139 change of +100 misssing
1. 0 answers
2. 461 views
Show me sample of dot arrays
1. 0 answers
2. 533 views
If you add a ten thousands digit that is 2 times the ones digit to the number 2,794, what is the new number?How do you get
1. 0 answers
2. 1,402 views
In a 4-digit number, the two greatest place-value digits are 2. The sum of the ones and tens digits is 14. What numbers are
1. 1 answer
2. 1,019 views
Van Gogh's Starry Night....how would you describe his use of lines, colors, shapes and texturesI love that piece. How would you
1. 1 answer
2. 1,557 views