Sunday, February 7, 2010

Land heats quicker then water. true or false?

Yes it heats quicker, and also cools quicker. Thats why if you live by a large body of water, that water generally won't change temperature much day to night, and vice versa. But the land will.Land heats quicker then water. true or false?
I agree, true in generalLand heats quicker then water. true or false?
In general, yes, that's true.
True.
True.
Yes, it does.
yes
yep!!
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  • When two molecules of gases are heated, the av. kinetic energy of the molecule increases? true or false?

    1)also is the rate of diffusion of NO2 greater than NH3??When two molecules of gases are heated, the av. kinetic energy of the molecule increases? true or false?
    True (kinetic theory of gases)





    For next question, rate of diffusion of NH3 is higher. Refer to Graham's law of diffusion: rate of diffusion is inversely proportional to the square root of molar mass (molar mass of NO2 is higher than NH3)

    I read that whale blubber is the new future of heating...true or false?

    It is soooo true!!!


    I just read an article from this months ';Christians Unite!'; magazine and they found ways to make it!!


    That magazine is so informative!!I read that whale blubber is the new future of heating...true or false?
    Absolutely false. Whales are quickly becoming an endangered species and it would be inhumane not to mention utterly impossible.I read that whale blubber is the new future of heating...true or false?
    False.
    True. Michael Moore will be keeping lots of folks warm.
    absolutely, and it makes an excellent replacement for chewing gum as well
    I plan on using a custom blend of grocery bags, styrofoam, and used tires.
    False, but if that was true, whales would be extinct in 2 month.
    doesn't matter, whales are protected
    hahahahaha sounds like a 12th century ad in the newyork times LOL
    You must be asking this question for attention because no one can be that stupid. Your only about a hundred years off.
    Sure,why not?





    Whales would be extinct in six months,but who needs 'em anyway?





    Did you read this is Mad Magazine?
    False...that was the OLD way of heating.

    I heard heating water in plastic in the microwave causes cancer. True or False?

    There are a number of stories circulating about plastic bottles, heating plastic, plastic and water etc and cancer, and just about all of them stem from hoax emails.





    Here are the facts about all the 'plastic bottles and cancer' scares - the freezing one, the warm bottles one, the microwave ones etc:





    http://www.hoax-slayer.com/plastic-cance鈥?/a>





    http://urbanlegends.about.com/od/medical鈥?/a>





    http://www.snopes.com/medical/toxins/pla鈥?/a>





    Oh, and nobody knows what causes cancer, so regard '------- causes cancer' claims with suspicion - the person is repeating hearsayI heard heating water in plastic in the microwave causes cancer. True or False?
    Dioxin Carcinogens causes cancer, especially breast cancer. Don't freeze your plastic water bottles with water as this also releases dioxin in the plastic.


    Dioxin are bad and bad for you. You should be using glass when heating food in the microwave.


    The combination of fat high heat and plastics releases dioxin into the food and ultimately into the cells of the body.


    Dioxin are carcinogens and highly toxic to the cells of our bodies.I heard heating water in plastic in the microwave causes cancer. True or False?
    SOME , not all, plastics will release carcinogens when heated. The key is to know whether or not the plastic you are using is ';microwave'; safe. If it doesn't say microwave safe on it somewhere, then it isn't.


    carcinogens do cause cancer.

    True of false? Bettas can live in non-heated tanks inside a house?

    true.. if you go to a pet store usually they have bettas in little cups or bowls and walmart use to sell them with plants on top in a vase, they do not require a heater, just make sure u keep them in lukewarm water and they will be fine. I have had mine a yr and he is healthy and kickingTrue of false? Bettas can live in non-heated tanks inside a house?
    True, but tropical temperatures keep them happier!True of false? Bettas can live in non-heated tanks inside a house?
    They can but its not good for them.
    true
    I'm pretty sure Bettas can live within a non-heated tank, as long as the room temperature is fairly warm.





    Remember, Bettas are tropical fish, so they live in warm waters.
    true and false.





    they can live in a non-heated tank if the room is at a constant warm temperature, however if it's in a room where the temperature flucutates (heating switches on and off, air con) the tank will need a heater.





    dramatically fluctuating temperatures can kill a fish.
    This will depend on the temperature of your house.





    Bettas do best when the water temperature is 76-80. Outside that range, they are lethargic and don't eat as well. If your room is warm enough to heat the water to somewhere within that range, fine. If not, you should get a heater.
    True
    true ..but it would need to be a warm house
    yes they can bec uas thay can live in a fish bowl.
    Of course they can, they can even live with some other fish that are cold water type but not goldfish. They put too much amonia in the water and it will burn the scales of the betta. If you put him in a large enough tank you can put some guppies but they can't be crowded and be sure the guppies have hiding places, sometimes Bettas get an attiude. but be sure you use aquarium salt and water conditioner in the water.
    FALSE: bettas need the warmer water because they are tropical fish.


    They like a temp. range of 76 to 84 degrees F.
    Normal temperatures. Away from drafts, vents and doors.
    true
    TRUE! Usually the temperature in a house is warm and the water will be relatevely the same, so they can be ok. But they prefer warmer temperatures.
    Neither. It depends on the temp of your house. If you normally keep your house it the mid 70's they should be okay. If you keep your house etremely cold, they will become lethargic and spend all of their time at the top of the tank. They do best with a heater, but CAN live without one.
    my betta lived for 4 years in my non-heated tank but the other 8 that I have owend died w/in a year so I would say it is better to have a heated thank
    it is true, but a betta in warmer water will be more active and colorful.
    FALSE.





    Bettas are tropical and require warm temperatures just like any other tropical fish. Only the goldfish family can survive in cool water.
    True, with a house that is 70 degrees or more all the time.
    true
    true and false. you can keep Betta's in a non-heated tank they just per fer it more if the tank is heated but if you have baby guppies you need to keep the tank heated
    my betta is living in a non heated tank. hes doing fine. i try to keep his tank close to a window so the sun can heat the water a little though.
    True, I have a male betta and he's been in an unheated tank for a year now and as much life left in him.

    Gas and heating-- true false questions?

    1. gases dissolve better when the pressure on the solution is decreased





    2. Heating a solution decreases the solubility of the gas in itGas and heating-- true false questions?
    1. False, remember that when you increase the pressure you force the molecules to collide and to reduce the potential energy of collisions molecules dissolve in the solvent. Therefore if you decrease the pressure the molecules will tend to escape from the solution to be free because naturally gases are a little soluble in liquids.





    2. True, if you increase the temperature the gases will escape, remember PV=nRT if you rearrange you get P=nRT/V and if T increases P increases and for the pressur to increase it is necessary that more molecules become to the gas phase. Heat increases solubility of ionic species only, not gas species.Gas and heating-- true false questions?
    1 true----- im not entirely sure


    2 false---- heating increases soluability.

    True or false and why: At a refinery, the oil is heated to condense the products?

    I would say false.





    Crude oil is indeed heated, that part is true. However, the heating doesn't condense anything.





    The process is called cracking. The process takes long hydrocarbon chains and breaks them into smaller ones. The process can take place by a number of means. At the very basic level, crude is heated under pressure to break the molecules.





    On a very high level, the resulting hydrocarbon chains are distilled, treated, and seperated into different products. A barrel of crude can produce any or all of the following:





    gasoline


    diesel oil


    kerosene


    heating oil


    jet fuel


    other chemicals





    So the resulting process seperates the products rather than condensing them.





    How Stuff Works has a pretty good article on oil refining. It may be worth a look:





    http://science.howstuffworks.com/oil-ref鈥?/a>True or false and why: At a refinery, the oil is heated to condense the products?
    I think so...
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