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Chemistry
Page 73
Questions (97,959)
I recently performed an experiment in which magnesium oxide formed.
I have to find out the simplest whole number ratio of Mg
1 answer
asked by
Anonymous
384 views
If I have 0.17g of Mg and 0.10g of O, and I am asked to find the empirical formula for magnesium oxide, is the following the
1 answer
asked by
Anonymous
336 views
Is SO3 always a gas?
3 answers
asked by
Anonymous
300 views
Does anyone know what chromium is soluble or insoluble in or know any inks that could help?
Thanks
3 answers
asked by
Anonymous
404 views
Does anyone know what chromium is soluble or insoluble in or know any links that could help?
Thanks
4 answers
asked by
Anonymous
416 views
Name the following:
CH3CH2Ch(OH)COOH CH3OCH2CH2CH3 C4H90(C=O)CH3
1 answer
asked by
Debbi
369 views
Does Sodium and potassium react with steam? Or is the reaction too violent to speak of?
1 answer
asked by
Marrion
354 views
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
384 views
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
369 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
450 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
439 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
400 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
395 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
361 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
400 views
What is the purpose of adding quicklime to the soil?
7 answers
asked by
Anonymous
352 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
431 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
427 views
What are some different ways two water molecules could be positioned so that they stick together?
1 answer
asked by
Channing
351 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
341 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
.
417 views
How do I contain Carbon dioxide when I combine sulfuric acid, sodium carbonate and calcium chloride?
4 answers
asked by
Audra
392 views
compare and contrast the reactivity of the organometallic reagents R2Cd, RLi, R2CuLi, RMgBr, RZnBr
with respect to ethyl
1 answer
asked by
Lucy
360 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
381 views
What is the molecular equation for the reaction between sodium (Na) and hydrochloric acid (HCl)?
1 answer
asked by
Ton
389 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
313 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
430 views
How do you know if a molecule is polar? Would CH2Cl2 be polar or non-polar?
1 answer
asked by
Katie Y.
424 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
427 views
Are the melting point and freezing point of a substance represented by the same number?
1 answer
asked by
Christina
418 views
Is water neutral in terms of the charges it holds?
1 answer
asked by
Anonymous
277 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
421 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
289 views
how do you do lewis structure? I cannot seem to understand exactly what to do.
1 answer
asked by
Kay
431 views
What the density of 100 mL of HCL at 18 degree C?
1 answer
asked by
Larson
339 views
How can you determine which acid solutions (all at 0.10 M) has the highest concentration of anions?
1 answer
asked by
Sandra
344 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.
410 views
Why is it that identical functional groups on different molecules don't have identical frquencies?
1 answer
asked by
Jaqui
353 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
423 views
Regarding conductivity:
1. If a solution has a high conductivity, it indicates that there are a lot of __________________ in
3 answers
asked by
.
655 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
414 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
388 views
What is the specific heat for Hydrochloric acid with the concentration of 0.3M?
1 answer
asked by
Indah
390 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
432 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
366 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
373 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
390 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
383 views
Isnt muddy water an example of a suspension
1 answer
asked by
Anonymous
289 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
359 views
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