All categories

3 years ago

Explain ways that organisms interact in helpful and harmful ways.

1 answer:

4 0

Organisms are living things. Us humans are also living things, so we are helpful and harmful to other organisms. For example: we can help another human being with something, or we can help a plant/tree grow if we water it. In return, they also help us by providing us with oxygen. however, we can also be harmful to each other and the environment, for example: we can't hurt each other, or plant or animals by killing them or we can hurt insects by stepping on them. Therefore, organisms are helpful and harmful to each other.

You might be interested in

Convert 25 km to mm.

nalin [4]

Answer:

25000000 millimeters

Explanation:

4 0

3 years ago

Read 2 more answers

The specific heat capacity of gold is 0.128 J/g C. How much would be needed to warm 250.0 grams of gold from 25.0 C to 100.0 C.

madam [21]

Answer:

3,200 joules

Explanation:

q = mcΔT = (250.0 g)(0.128 j/g°C)(100°C -25°C) = 3,200 joules

7 0

4 years ago

Phenol and benzoic acid are both weak acids that are solublein

stealth61 [152]

Answer:

Se explanation below

Explanation:

Here we will use the technique of extraction taking advantange of the different solubilities of Phenol and and Benzoic Acid in the NaOH and and NaHCO₃ solvents (In reality their anions). Notice that phenol does not dissolve in the weak base NaHCO₃ so we can have the solution of phenol and benzoic acid in ether and proceed to extract with this weak base, the phenol will remain in solution in the organic ether solution and the sodium benzoate will go into the water layer.

We then will repeat the extraction procedure to separate the phenol from the organic layer by using NaOH instead.

Benzoic Acid /

Phenol/ Ether ⇒Extract w/ ⇒ Organic Layer = Phenol/Ether

10 % NaHCO₃ Aqueous Layer = Sodium Benzoate

Sodium benzoate ⇒ 10 % HCl to precipitate Benzoic Acid

Filter Precipitate benzoic Acid ⇒ Recrystallize benzoic Acid

Phenol / Ether Extract w/ Organic Layer = Eher

10 % NaOH Aqueous Layer =

Sodium Phenolate

Sodium Phenolate ⇒ 10% HCl to precipitate Phenol Filter Precipitate Phenol ⇒ Recrystallize Phenol

7 0

3 years ago

How many moles of O2 can be formed from the decomposition of 2.6 mol KClO3?

V125BC [204]

Answer:

260

Explanation:

4 0

3 years ago

Are there any good mnemonic devices for remembering functional groups?

Nikolay [14]

<span>Mnemonics for Functional Groups These are possible mnemonics for the common functional groups.
Vowels: The vowels "A", "E", and "Y" for Alkane, Alkene, and Alkyne.
Remember there is no "I." "O" and "U" would result in awkward pronunciations. Alcohol: Look for the "C-O-H" in "Alcohol." Ether: Ethers were anesthetics used in the 1800s.
Dr. Kellogg also lived at the same time. Corn Flakes are made by Kellogg's. A rooster or wingspan (C-O-C) is the cornflake mascot.
Amine: Remember the "N" stands for nitrogen. Aldehyde: This sounds like "Adelaide," the Australian city.
Australia is at the end of the Asian islands, and aldehydes are at the end of the hydrocarbon chain. The "Y" indicates a C=O double bond.
Ketone: Imagine the diagonal strokes of "K" forming the C=O double bond.
Carboxylic Acid: "Box" stands for boxed wine or C-O-H, alcohol. The "Y" indicates a C=O double bond.
Ester: This sounds like "Estelle" George Costanza's mother in the TV show Seinfeld. George's nickname was Koko or Coco. So think of O=C-O-C.
Amide: Amine with a "D". D for double.</span>

8 0

3 years ago