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"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
27,719 views
Equation: Fe2O3 + 2Al ---> 2Fe + Al2O3.
How many grams of Fe2O3 react with excess Al to make 475g Fe? Can you show me step by
4 answers
asked by
Anan
4,061 views
If 20 mL of 0.01 M aqueous HCl is required to neutralize 30 mL of an aqueous solution of NaOH, determine the molarity of the
5 answers
asked by
Emily
2,313 views
We did the gold penny lab, where we bathed a copper penny in a hot zinc-NaOH mixture to turn it a silver color, then we heated
7 answers
asked by
Emily
4,517 views
Fe2O3 + 2Al --> 2Fe + Al2O3
How many grams of Fe will form when 97.6g Al2O3 form? Please & Thank you
3 answers
asked by
Ana
2,536 views
1. What is the pH of a solution whose [H3O+] is 1 X 10^ -5 M?
2. What is the [H3O+] concentration of a solution with a pH of 9?
4 answers
asked by
Chris
3,450 views
"Would it be possible to have an addition polymer synthesized from a monomer that has only single bonds? Why or why not?"
==> I
4 answers
asked by
Emily
1,116 views
Due to the screening effect, the 3s electrons of magnesium (Mg) feel an effective nuclear charge (Zeff) of:
1. +1 2. +2 3. −2
5 answers
asked by
Bill
6,496 views
When a solution is red, does it absorb or transmit red light?
If it absorbed red would you see it? You see what is transmitted.
4 answers
asked by
Anonymous
1,450 views
At what wavelengths do Cr(III) ions absorb the maximum amounts of light?
Look at your color wheel. What color is Cr(III)? It will
1 answer
asked by
Anonymous
1,173 views
We did a lab in class on Friday where we stuck a metal loop in various chemicals and stuck it in the flame of a Bunsen burner
4 answers
asked by
Emily
1,172 views
I'm doing what's called "test repair" for my class where we correct the answers we got wrong on the test. In order to get points
3 answers
asked by
Emily
465 views
In my vocabulary crossword puzzle, I have one clue answer left to fill in the puzzle, but the clue doesn't match anything that
2 answers
asked by
Emily
644 views
I have to fill in the blanks of these questions with the elements H (hydrogen), Co (cobalt), Ga (gallium), and O (oxygen), but
3 answers
asked by
Emily (different from one before me)
658 views
Can someone check my work please? Thanks :))
2. Write the formulas for the compounds formed between the following: g. Cu+2 and
1 answer
asked by
Emily
458 views
Can someone please explain to me how to use the stock naming system when naming chemical/ionic compounds? I reeeeaaaally do not
3 answers
asked by
Emily
600 views
what happens when the change of energy is negative?.
1 answer
asked by
Destini
313 views
Help! I do not understand this question. What do you think the effect of concentration might be on the perceived level of a
1 answer
asked by
Ashley
294 views
Absorbance spectroscopy relies on the fact that specific molecules can only absorb certain wavelengths. Explain how this could
1 answer
asked by
Ashley
381 views
Can someone check my first answer and help me with the second question? Thanks so much!! :D
1. N2 + 3H2 ==> 2NH3 : How many grams
2 answers
asked by
Emily
799 views
On the same subject as before with the limiting/excess reagent stuff -- can someone please check my answer to make sure I'm
2 answers
asked by
Emily
573 views
I don't exactly understand this question -- can someone maybe explain it to me please?
6) Suppose you have an NaOH solution of
1 answer
asked by
Emily
430 views
I got 206.67 g Fe, DrBob222
1 answer
asked by
Ana
304 views
What is the molecular structure of the molecule AlCl3?
What characteristic is notable about the structure that helps us to
2 answers
asked by
HonorsChemistryKid
613 views
Every Bronsted-Lowry acid is also a Lewis acid.
Why is this statement false? Thanks
2 answers
asked by
Hello
734 views
How does heating or boiling a substance affect its pH?
1 answer
asked by
Emily
341 views
Hi
"Ka for HCN is 4.9 x 10^-10. What is the pH of a 0.068 M aqueous solution of sodium cyanide?" How do I do this question? Thank
3 answers
asked by
bess
1,541 views
Will a base + H2O ALWAYS from a basic solution? (not a neutral or acidic solution)
1 answer
asked by
Thea
396 views
Does red cabbage contain one or many anthocyanins? How do you know this?
1 answer
asked by
Kiki
364 views
I have two questions on my review study guide that go like this:
1) What is the equation for calculating the energy change that
4 answers
asked by
Emily
440 views
If the percent (mass/mass) for a solute is 20% and the mass of the solution is 300 g, what is the mass of the solute in
3 answers
asked by
Emily
417 views
N2+ 3H2--> 2NH3
How many grams of NH3 can be produced from the reaction of 28 g N2, and 25 g of H2?? I got 34g NH3 and 140 NH2 2.
2 answers
asked by
Emelia
982 views
A sample of CO2(g) at 305mmHg goes from 13 degress celsius to 25 degress celsius. What is the new pressure?
1 answer
asked by
Tiffany
338 views
What is the Lewis dot diagram for C2Cl2?
2 answers
asked by
Brett
947 views
1. What is the pH of a solution whose [H3O+] is 1 X 10^ -5 M?
2. What is the [H3O+] concentration of a solution with a pH of 9?
1 answer
asked by
Kelly
377 views
An aqueous solution of NaCl has a concentration of .500 M. 35.0 mL of this solution is allowed to evaporate to a volume of 20.0
3 answers
asked by
Lou
712 views
I need someone to check these questions. I know its a lot of questions.
2NH3 + Ag+ Ag(NH3)2+ a. What is the Lewis acid in this
3 answers
asked by
Elizabeth
763 views
How many moles are in 4.36 L of oxygen gas at STP?
3 answers
asked by
Taylor
666 views
1. .0025 M tartaric acid completely reacts with .0030 M of Al bicarbonate if .913 l of CO2 forms at 298 Kelvin with pressure of
9 answers
asked by
Bill
612 views
How do I write a complete ionic equation and net ionic equation for: 2HCl(aq)+Ca(OH)2(aq) �¨ 2H2O(l)+CaCl2(aq) ?
3 answers
asked by
Tripp
1,903 views
When 6 grams of acetic acid and 8.4 grams of sodium bicarbonate react, how many moles of CO2 is produced? I don't know how to
1 answer
asked by
Brandie
417 views
what volume of solution does a 3.0 molar solution need to have in order to contain 1.8 moles of sodium sulfate?
1 answer
asked by
Erin
395 views
If 72.4 kJ of heat is supplied to a 752 g block of metal, the temperature of the metal increases by 9.95°C. Calculate the
4 answers
asked by
Elisheva
2,675 views
Predict Products and write balanced equation
FeBr3 + 3Ba(0H)2
1 answer
asked by
Jon
446 views
An automobile gasoline tank holds 45 kg of gasoline. When the gasoline burns, 158 kg of oxygen are consumed and carbon dioxide
4 answers
asked by
SA
2,006 views
What is the concentration of 15.50 mL of H2SO4 if it takes 25.00 mL of a 0.452 M KOH solution to neutralize it?
1 answer
asked by
Kiori
187 views