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12 Answered Questions for the topic Molecules

Molecules Chemistry Moles


Chemistry Question Moles and Molecules

Seven moles of calcium hydroxide has_____ number of Molecules i was told the answer is 42.16*10^23 how did they get that as the answer? Thank you
Molecules Science Chemistry


How many moles are in 8.6x10^26 molecules of H2O expressed in the correct number of significant figures?

A. 1,400 mil h2oB. 5.2x10^50 mol h2oC. 1.4 mol h20 D. 1.4x10^51 mol h2o
Molecules Science Chemistry


How big is an atom?

Molecules Science Chemistry


What kind of bond holds a water molecule together?

What kind of bond holds a water molecule together?
Molecules Formulas Ions


which name of Zn(OH)2 compound is right? Zinc Hydroxide, or Zinc(||) Hydroxide ?

i know that Zinc is one of the metals cations, but i don't know if it's a transition metal too. I asked my professor once and he preferred the second one Zinc(||) Hydroxide, but after i researched... more
Molecules Science Biology


Where are hydrogen bonds located in nucleic acids and carbohydrates?

I'm having trouble answering the following questions: “where would you find hydrogen bonds in nucleic acids?” “where would you find hydrogen bonds in carbohydrates”?
Molecules Chemistry Moles


chemistry problem

The natural abundance of 2H is 0.015% and that of 18O is 0.20%. How many 2H218O molecules are there in 1.0 moles of water?


Why does ClO3- only have 2 double bonds instead of 3?

I drew a Lewis Structure of ClO3- with 3 double bonds instead of 2 and 1 single bond but I'm wondering if it is a valid structure.  Is there a maximum amount of double bonds that Cl can make?


Atoms are a combination of molecules

Please tell me the answer to the question 


help with molecule

if there is a representation of a molecule found in mothballs, is it unsaturated, an aromatic compound, a hydrocarbon or all of these.   the molecule   has 6 sides with a circle in it.  Cl is at... more
Molecules Ap Biology


If you were a pharmaceutical researcher, why would you want to learn the three dimensional shapes of naturally occurring signaling molecules?

i understand that biological molecules can bind to each other forming the weak bonds and that they can mimic other molecules  but I don't see the importance In the 3D shapes 


Which Lewis Dot Diagram could represent a noble gas?

1. X (Two dots at top) 2. X (Dots all around except on right, only has one instead of two) 3. X (One on the right) 4. X (Dots all around except on left, only has on instead of two)

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