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Chemistry
Page 72
Questions (96,939)
5.0 g of NaNO3 is dissolved in 50.0 g of water. The initial temperature of the water was 21 degrees Celsius and the final
1 answer
asked by
Tom
364 views
Why is zinc used to coat Iron and not the other way around?
Why is Iron not recommended in construction of steam pipes?
1 answer
asked by
Mohamed
444 views
Please check my workings to see if i'm correct, thanks!
Find the percentage of nitrogen by mass in Ammonium nitrate, NH4NO3.
1 answer
asked by
Marrion
431 views
Could some explain the following question to me:
Explain the differences between the intermolecualr forces in soap made from Lard
1 answer
asked by
Anonymus
394 views
We know that zinc,copper can be used to coat Iron. However Iron is not used to coat zinc. Why is it so?
1 answer
asked by
Jesse
390 views
What mass of substance would be needed to prepare these solutions:
1) 400ml (cm3) at 5% weight/volume 2) 50ml (cm3) of NAOH at
1 answer
asked by
george
356 views
What is the empirical formula of the oxide in Magnesium Oxide? The number of moles of Mg = 8.026 x 10^-8. The number of moles of
1 answer
asked by
Dora
396 views
What is the purpose of adding quicklime to the soil?
7 answers
asked by
Anonymous
347 views
What is a general rule relating the color of an object to the color(s) of light that it absorbs?
1 answer
asked by
Brian
423 views
Based on pressure values for each component of the reaction, what is the value of the reaction quotient, Q?
Equation: C2H2 + 2 H2
1 answer
asked by
Anonymous
421 views
What are some different ways two water molecules could be positioned so that they stick together?
1 answer
asked by
Channing
347 views
Give the symbol for each, and the units:
1.What is the mean kintetic energy of all particles in a sample of matter? 2.What is the
1 answer
asked by
Natalie
337 views
1.91x10^4 (or 19100) J is how many in Cal?
I've tried these answers and they are all wrong: 4561.9 4.56x10^3 4562.0 4565 4569.4
3 answers
asked by
.
412 views
How do I contain Carbon dioxide when I combine sulfuric acid, sodium carbonate and calcium chloride?
4 answers
asked by
Audra
386 views
compare and contrast the reactivity of the organometallic reagents R2Cd, RLi, R2CuLi, RMgBr, RZnBr
with respect to ethyl
1 answer
asked by
Lucy
354 views
A 3.26g sample of metallic sodium is added to 200mL of water. How many moles of NaOH are produced?
1 answer
asked by
L
376 views
What is the molecular equation for the reaction between sodium (Na) and hydrochloric acid (HCl)?
1 answer
asked by
Ton
384 views
When combining Ca(OH)2 with Na2CO3 it entraps SO2 out of a gas stream from kiln emissions where ore is processed into nodules.
1 answer
asked by
Cheryl
307 views
How do i use energy coupling to work out how many molecules of ATP dG =-55 kJ/mol needed to make a peptide bond dG = +25 kJ/mol
i
1 answer
asked by
Amelia
426 views
How do you know if a molecule is polar? Would CH2Cl2 be polar or non-polar?
1 answer
asked by
Katie Y.
420 views
given a 10.0g sample of MgCO3*5H2O, what weight of anhydrous magnesium carbonate can be obtained after driving off the water?
48.
3 answers
asked by
Anonymous
420 views
Are the melting point and freezing point of a substance represented by the same number?
1 answer
asked by
Christina
412 views
Is water neutral in terms of the charges it holds?
1 answer
asked by
Anonymous
273 views
How many milliliters would it take to titrate 10.0 mL of 0.75 M HCl with 0.10 M NaOH?
1 answer
asked by
Tom
417 views
I don't know the correct answer that's what i have to find.
for the first part here is my work..... 6.2e-4/min=0.0372seconds half
1 answer
asked by
Dena
286 views
how do you do lewis structure? I cannot seem to understand exactly what to do.
1 answer
asked by
Kay
426 views
What the density of 100 mL of HCL at 18 degree C?
1 answer
asked by
Larson
334 views
How can you determine which acid solutions (all at 0.10 M) has the highest concentration of anions?
1 answer
asked by
Sandra
341 views
In an atom, an electron in which of these sublevels can absorb a photon of energy but cannot emit one?
a. 3s b. 2s c. 3p d. 1s e.
3 answers
asked by
C.
405 views
Why is it that identical functional groups on different molecules don't have identical frquencies?
1 answer
asked by
Jaqui
347 views
Please help me answer the question:
What does it mean Write a net ionic equation for the reaction 2HCl + Ca(OH)2 -> CaCl2 + 2H20
1 answer
asked by
Brittany
420 views
Regarding conductivity:
1. If a solution has a high conductivity, it indicates that there are a lot of __________________ in
3 answers
asked by
.
646 views
What volume in mL of .100 M NaOH would be required to titrate a 297 mg sample of a weak acid with an equivalent weight of 126
1 answer
asked by
Telly
408 views
One last question....
Which of these two metals (Aluminum or Copper) would be a better choice to make silverware out of? Specific
3 answers
asked by
Jane
385 views
What is the specific heat for Hydrochloric acid with the concentration of 0.3M?
1 answer
asked by
Indah
384 views
The volume of an ideal gas is 2.06L at standard temperature and pressure. Calculate the volume at 1.75 atm and 27 degrees
1 answer
asked by
Amber
426 views
How is Stiochmetry or anything that has to do with quantities in chemical reaction used in everyday like except for making
3 answers
asked by
Simmi
363 views
My brain refuses to wrap around titration. Problem: Given 150.0 mL of a 1.05 M HCl solution, how many milliliters of a 2.50 M
1 answer
asked by
Wolfmaid
368 views
I need to know how to dilute a 1L IV bag of 0.45% NaCl with 3.5% NaCl water to make it a drinkable 0.9% NaCl
1 answer
asked by
Emma
385 views
it's a review for our exam.
a ____ is formed by a liquid at its surface in a tube, and can be shaped upwards or downwards. also..
1 answer
asked by
fe
377 views
Isnt muddy water an example of a suspension
1 answer
asked by
Anonymous
283 views
What is the equilibrium constant of the reaction 2NO2 (g) with 3.0 M and N2O4 with 2.5M
1 answer
asked by
John David
351 views
Describe how covalent and ionic bonds differ with regard to bond strength and how is bond length related to stability ane
1 answer
asked by
MF
372 views
what is the density that has a mass of 77.0 g and a volume of 36 mL?
1 answer
asked by
Jose
292 views
Trying to figure out this equation I did the first part but I am really having trouble getting this one and my professor told me
1 answer
asked by
Shanta
389 views
Trying to figure out this equation I did the first part but I am really having trouble getting this one and my professor told me
1 answer
asked by
Shanta
429 views
how do i calculate the number of moles of .066g of silver? what's the equation?
1 answer
asked by
Cassidy
372 views
How many grams of carbon dioxide are produced if you react 200g of benzaldehyde reacr with 32g of oxygen?
its stoichiometry, i
1 answer
asked by
Jason
368 views
How is magnesium formed (detailed answer)
1 answer
asked by
Numz
300 views
if 8.50grams CH4 reacts with 15.9grams of oxygen gass which of the prdocut is the excess and which is the limiting.
4 answers
asked by
David
398 views
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