Chemistry

Chemistry Help Needed??!

Is Barium Chloride not suluble, soluble, or very soluble in water???-Ba is very soluble in water, as are most chlorides.BaCl2 is a combination of one part Barium and two parts Chlorine and so is very

Instant Chemistry help!

So I have a test tommorow in chemistry and theres one major thingI do not understand. When naming chemical formulas, how do you know when to add a di infront of the element? For example: dichloride. -

Help with chemistry question

What is the general form of a common automobile battery? How many electrodes does a car battery use? Does it use an acidic aqueous electrolyte solution? Is the battery rechargeable? Is the battery vol

What are the seven diatomic molecules

hydrogen (H2), nitrogen (N2), oxygen (O2), fluorine (F2), chlorine (Cl2), iodine (I2) and bromine (Br2)-To remember: Dr. HOFBrINCl (pronouned Doctor Hoff-Brinkle) H-ydrogen O-xygen F-lourine Br-omine

Can anyone PLEASE explain Redox to me I really need help it's a basic formation problem? 10 Points Best Answer

Im not sure if Im doing this right but for the formation of aluminium sulfide you go: Step 1: Al -> Al3+ +3e-(x ?) S8 + 16e- -> 8S2-(x ?) ______________________ So the electrons dont match up so I

What is the [OH -] in each solution

pH = 12.91 and pH = 3.41 and pH = 5.67-ph = 12.91 ... pOH= 14-12.91=1.09 [OH-]= .081M(10^-(1.09)) Proceed similarly

I need some help with this solubility problem please

The following data is for the solubility of lead (II) bromide in water. 0 C: 0.455 g per 100 ml solution 20 C: 0.844 g per 100 ml solution 100 C: 4.71 g per 100 ml solution A) What is the concentrati

Chemistry mass problems

Your Open QuestionShow me another » Chemistry problems for mass relationships? Hello, I have a lot of questions that need to be done for homework, but so far, there are a couple I cant do, and I need

Endothermic & Exothermic- Which is Positive & Which is Negative

Hey, thanks for coming :-) So Im getting confused about this.. if I have substances A + B --> C + 180 kJ is the forward reaction exothermic or endothermic? If I have substances A + B --> C -180 kJ i

How to make 3-pentanone from 2-pentyne

Develop a synthesis pathway to to accomplish this task. Please help. I got 2 Pentanone from 2-pentyne but I dont know how to get 3-Pentanone. Thanks-3-pentanone can be synthesized from 2-pentyne in an

How many sulfur atoms are in two moles of S20

Im a little confused as the question calls for two sulfur atoms and 1 oxygen atom and the final answer would be 2.41 * 10^24. Not sure how they got it.-Ok so.A mole is a number, like a dozen (12) or b

Chemistry Question Please Help

What is the minimum amount of 6.1 M H2SO4 necessary to produce 25.1 g of H2 (g) according to the following reaction: 2 Al (s) + 3 H2SO4 (aq) --> Al2(SO4)3 (aq) + 3 H2 (g)-use molecular mass to find m

What does electronegarivity have to do with bond polarity

electronegativity means to attracts electrons towards itself and thus it tendency to form negative ion and thats why it is related with bond polarity.

How do we clean up mercury

recently i broke an old thermometer and found myself with these lovely little pearls of lethal mercury chasing themselves around the top of my workbench...darned hard to round up, they quickly run awa

What is oxidized and what is reduced in the following reaction

A. Al is oxidized and Br2 is reduced.B. AlBr3 is reduced and Br2 is oxidizedC. Al is reduced and Br2 is oxidizedD. AlBr3 is reduced and Al is oxidizedE. AlBr3 is oxidized and Al is reduced If you co