Chemistry

Science double check help! Variables, control, hypothesis, conclusion

Im not a great student at science so I will need some help. I decided to do the experiment To see if hot water will freeze faster than cold water My hypothesis was: Hypothesis: I believe that the co

Please help!! science help needed !!! please

Question 5 (Multiple Choice Worth 2 points) Another name for anaerobic respiration is breathing. digestion fermentation. photosynthesis. Question 6 (Multiple Choice Worth 2 points) An environme

Can someone clarify this chem question

For the reaction ? Sb2S3 + ?HCl-->? SbCl3 + ?H2S , how many grams of SbCl3 (228.1 g/mol) could be formed from 18.7 grams of Sb2S3 (339.6 g/mol) and 13.6 grams of HCl (36.5 g/mol)? Answer in units of g

Chemistry Homework Only 5 Questions (The Atom)

1. The following statements concern the structure of the atom. Which is the correct statement?A.Protons, neutrons and electrons are almost identical in size.B.The nucleus is always neutral.C.Electrons

Heat of vaporization question

This is the real problem: What is the heat of vaporization (kJ/mol) if it takes 3,452 J of heat to completely vaporize 2.68 moles of the liquid at its boiling point?-since the heat of vaporization is

What is the solution to the equation...

square root (2x-5)to the 2nd power=13-x=9 Square root of something squared is just the same value. So square root (2x-5) to the second power=2x-5 2x-5=13 2x=18 x=9

Why is sodium more stable than a nuetral atom

Thanks-Hello, Im sure you mean sodium as an ion, Na+. Ions are more stable than their neutral atoms a lot of the time because their electron configurations are those of the noble gases - unreactive.

Can someone explain the electron configuration of Lawrencium

I am reviewing some chemistry since Ill be starting college this fall and havent taken it for 3 years. I was going over electron configurations and I never learned how to do the F orbitals. I looked i

Does Aluminum ions become reduced when they go back to their ground state

Aluminum ions are reduced (gain electrons) when they go back to their ground state.

1 chemistry question plz!?!

balance: _Fe +_HC2H3O2 ---->_Fe(C2H3O2)3 +_H2-_Fe +_HC2H3O2 ---->_Fe(C2H3O2)3 +_H2 Since Hydrogen goes from 1 to 2 and C2H3O2 goes from 1 to 3, the common denominator is 2*3 which is 6. Multiply HC2H

Where else does carbon monoxide come from besides car exhaust

Flatus

Major in chemistry or pre pharmacy

I plan on going to pharmacy school. im going to need a good job though while in pharmacy school so I can afford it. Should i major in Chemistry? or Pre Pharmacy? what jobs could I get if i major in C

Chemistry Help Request. I'm sorry, but I'm having trouble

The test solution is made basic and drops of 0.1 M Ca(NO3)2 are added but no precipitate forms.To what part of the Experimental Procedure do you proceed?Explain. Both iodide ion and chloride ion are

What is the weakness of elements grouping based on short periodic table

help me with my chemistry homework XO XO what is the weakness of elements grouping based on short periodic table?-the weakness of elements grouping based on short periodic table .. 1. The existence o

What is the 8 carbon version of the phenyl- group called

Easy points for the first correct answer.-C8H8 is non-aromatic and is called (1,3,5,7) cyclooctatetraene (known in the lab as COT); it has alternating C-C and C=C bonds. [1] C8H7- would be called cyc