Chemistry (Science & Mathematics) - June 2007

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Two species in a community survive by eating the same type of fruit.?

Neither species benefits from their identical diet. This relationship is called

A. symbiosis

B. Commensalism

C. Mutualism

D. Interspecific competition

2007-06-24 12:06:27 · 11 answers · asked by whisper2ya 2

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In locations where air descends at latitudes near 30 degrees we tend to find?

A. deserts

B. Tropical rainfroests

C. Polar regions

D. Equatorial forests

2007-06-24 12:04:51 · 6 answers · asked by whisper2ya 2

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The rooted aquatic plants in a lake are found in the ____ zone?

A. Littoral

B. Limnetic

C. Profoundal

D. Thermocline

2007-06-24 12:03:10 · 2 answers · asked by whisper2ya 2

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Which of the following pollutants is responsible for the increase in skin cancers abnd cataracts over the past

Over the past ten years?
A. Nitric oxide

B. Acid rain

C. Use of chloroflurocarbons

D. Chlorine monoxide from automobiles

2007-06-24 12:01:50 · 7 answers · asked by whisper2ya 2

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Why does water slow down the rate of a reaction containing KI, Na2S2O3, KBrO3, and HCl?

Why does water slow down the time it takes for the reaction to occur?

2007-06-24 10:43:33 · 1 answers · asked by Anonymous

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conversion?

4.75 kg to microgram...

how?

2007-06-24 10:21:05 · 5 answers · asked by sweet_candy 2

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If you suck hellium from a balloon and it alters your voice, wouldn't it also displace oxygen from the brain?

2007-06-24 08:48:41 · 4 answers · asked by MAVENSHER 1

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Why does your voice change when you suck the helium out of a balloon?

2007-06-24 08:47:55 · 6 answers · asked by al pedo estoy! 1

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What's your favorite metal?

The 10 points arbitrarily go to the first person who matches my favorite metal (heh heh).

2007-06-24 08:32:11 · 17 answers · asked by Skepticat 6

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Is Distilled water the same as De-ionised water?

2007-06-24 08:22:16 · 15 answers · asked by Kelly B 4

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Help!, molar mass of unknown gas?

1. A sample bulb contained 0.712 g H2 (g) at a certain temperature and pressure. Under the same conditions of temperature and pressure, the bulb can hold 13.0 g of an unknown gas. What is the molar mass of the unknown gas?

Obtaining H2 volume from the ideal gas law (assuming STP) and then using that volume to obtain the unknown gas density (with STP) is the correct way to obtain the molar mass?

I would appreciate some help

Thank you.

2007-06-24 06:11:15 · 5 answers · asked by chem 1

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can someone please help me?

The wavelength max in this experiment is 615 nm, corresponding to the color orange. The copper (III) solution is certainly not orange in color. explain

and

A 0.85 cm cuvette is mistakenly substituted for a .80 cm cuvette. When the percent transmission for the solution in the "too large" cuvette is taken, will it be higher, lower, or the same as it would be in a proper sized cuvette? Explain

2007-06-24 05:30:36 · 2 answers · asked by aznxbabi88 2

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how to separate sand and charcoal?

2007-06-24 05:09:58 · 9 answers · asked by table_tennis_rox 1

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what are the different parts of the bunsen burner and its purposes?

2007-06-24 05:00:23 · 3 answers · asked by multi_soul 1

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When you combine chocolate and milk, is there a chemical reaction??

please answer, this is nto my homework. My dad and his friend have had a dispute over this for years......lol

2007-06-24 04:39:59 · 7 answers · asked by Anonymous

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what is butane compose of?

2007-06-24 04:26:11 · 7 answers · asked by multi_soul 1

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how do pollutants effect the melting point of water?

how do pollutants effect the melting point of water? This is a question in our homework. I need an answer `cause i'm completely stumped.

2007-06-24 04:17:27 · 5 answers · asked by JP 2

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what is a "strike back" in relation to bunsen burners?

please give me your source if possible..

2007-06-24 04:14:11 · 2 answers · asked by chiechie 1

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rumus pengiraan sub-indeks bagi ozon?

2007-06-24 04:07:48 · 2 answers · asked by kamalia r 1

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used oil how do i brake it down to make fuel out of it someone please?

2007-06-24 03:55:08 · 3 answers · asked by david p 3

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why is there a delay in the ignition of the match when it was inserted into the flame just above the barrel?

2007-06-24 03:54:41 · 3 answers · asked by multi_soul 1

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do either sphingolipids or cholesterol contain phosphorus?

2007-06-24 03:30:57 · 2 answers · asked by Anonymous

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who are the chemists who got a nobel prize awards?

2007-06-24 03:25:12 · 4 answers · asked by Anonymous

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Chemistry is really driving me crazy!!!!!?

I think chemistry is like a piece of sh** subject to me and i will be having my chemistry exams tomorrow and i still haven't got the concepts right... What's more is that chemistry does not have a standard answer... Whenever i think this answer is correct and turns out wrong, the teacher will explain that that is an EXCEPTIONAL case...like in the case of some element not following the rules of chemistry... It is so stupid and why can't chemistry be like physics???

2007-06-24 03:16:17 · 9 answers · asked by Lonelyz 1

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