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how do you reset a password on an ipod?

i missed my period and i had a blood test done to see if i was pregnant and the test came back negative....why haven't i had my period.

do you believe that scientists are correct about the "big bang"? why are why not?

why does water form on the outside of a cold glass of juice?

If you ever seen a fluorescent light bulb break, you know that the inside looks very different from a regular light bulb. See if you can explain the difference.

best answer gets 10 points

what type of reaction is this?

A.combination

B.single-replacement

C.corrosion

D.both A and C are correct

At a less vigorous level of exercise, glucose is completely metabolized into carbon dioxide and water. Which of the following statements best explains why lactic acid is produced in one reaction and carbon dioxide is produced in the other?

A.in vigorous exercise, enzymes are unable to keep up with the reaction.

B.in vigorous exercise, water collects i the cells.

C.in vigorous exercise, there is insufficient oxygen for complete combustion of glucose.

D.lactic acid is more useful by-product.

okay so i have really been into numerology lately so i was wondering what would be the best website to go to to get the numbers and their meanings.

A.they are brightly colored ions that allow a chemist to view the progress of a reaction in a solution

B.they are ions that are present in a solution on both the product and the reactant sides of a complete ionic equation, but do not participate in a reaction

C.they are a necessary component of all combustion reactions

D.they are written on the products side of a complete ionic reaction,but not the reactants side

of chlorine gas is bubbled through an aqueous solution of sodium iodide, the result is elemental iodine and aqueous sodium chloride solution. what kind of reaction took place?

A.combination

B.combustion

C.double-replacement

D.singe-replacement

an unknown molecular substance is stirred into pure water. prior to this adding substance,the water did not conduct an electric charge. after the molecular substance is added,a charge is conducted. which of the following is an accurate conclusion?

A.the molecular substance did not enter solution

B.the molecular substance separated into ions when it entered solution

C.the molecular substance did not separate into ions when it entered solution,and remained intact

D.the molecualr substance and water underwent a combination reaction,leading to the formation of a more complex molecule

whats the significance of being born on 06-14-91

A.they provide the most accurate way of describing reactions

B.they are recognizable by speakers of all languages

C.at best,they provide a qualitative,but not quantitative,description of a reaction

D.they are just as useful as reactions described by chemical nomenclature

A.never go into solution water

B.go into solution water,but never dissociate

C.may or may not dissociate in water

D.form a complex with water molecules and precipitate out of solution

A.moles of solvent per liters of solvent

B.moles of solute per liter of solution

C.grams of solute per liter of solvent

D.moles of solvent per liter of solute

A.an unsaturated solution because the solute will form

B.a build up of undissolved solute

C.a supersaturated solution

D.both A and B

A.one cubic cm of salt

B.one cubic cm of salt divided in half

C.one cubic cm of salt divided in thirds

D.one cubic cm if salt divided in quarters

In a particular reaction, more energy is required to break the attractions within the solute and solvent molecules than is released when the attractions between the solute and solvent particles form. Overall, this reaction is a-

A.endothermic reaction

B.exothermic reaction

C.immiscible reaction

D.insoluble reaction