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marissa [1.9K]
3 years ago
14

All synthetic materials ultimately come from

Chemistry
1 answer:
Leno4ka [110]3 years ago
7 0

Answer:

petroleum, a fossil fuel, is extracted from the earth and mechanically transformed into fibers for clothing.

Explanation:

synthetic materials, like polyester, nylon and acrylic, don't exist naturally but are made in factories. Synthetics are created through an industrial manufacturing process in which

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Write a balanced chemical equation for the standard formation reaction of liquid chloroform (CHCI).
Inga [223]

<u> C^1H^1C^1I^1</u>

Explanation:

<u>this seems already balanced</u>

C = 1

H =1

C = 1

I = 1

8 0
2 years ago
The lock-and-key model and the induced-fit model are two models of enzyme action explaining both the specificity and the catalyt
ivolga24 [154]

Answer:

The lock-and-key model:

c. Enzyme active site has a rigid structure complementary

The induced-fit model:

a. Enzyme conformation changes when it binds the substrate so the active site fits the substrate.

Common to both The lock-and-key model and The induced-fit model:

b. Substrate binds to the enzyme at the active site, forming an enzyme-substrate complex.

d. Substrate binds to the enzyme through non-covalent interactions

Explanation:

Generally, the catalytic power of enzymes are due to transient covalent bonds formed between an enzyme's catalytic functional group and a substrate as well as non-covalent interactions between substrate and enzyme which lowers the activation energy of the reaction. This applies to both the lock-and-key model as well as induced-fit mode of enzyme catalysis.

The lock and key model of enzyme catalysis and specificity proposes that enzymes are structurally complementary to their substrates such that they fit like a lock and key. This complementary nature of the enzyme and its substrates ensures that only a substrate that is complementary to the enzyme's active site can bind to it for catalysis to proceed. this is known as the specificity of an enzyme to a particular substrate.

The induced-fit mode proposes that binding of substrate to the active site of an enzyme induces conformational changes in the enzyme which better positions various functional groups on the enzyme into the proper position to catalyse the reaction.

4 0
3 years ago
an amber alert object is placed in 50 mL of water in the water level rises 72 ml. What is the volume of the object?​
Ilya [14]

Answer:

72 ml-50 ml =22 ml is the volume of the object

Explanation:

7 0
3 years ago
Write a net ionic equation for the overall reaction that occurs when aqueous solutions of hydrosulfuric acid (H2S) and sodium hy
vovangra [49]

Answer: 2NH4Br(aq)+Pb(C2H302(aq)-------------------->

2NH4C2H3o2(aq) + PbBr2(s)

Explanation:

The net equation is :Pb2+ (aq)2Br (aq)---------------------->PbBr2(s)

the spectator ions NH4 +C2H3O2 are canceled

6 0
3 years ago
Why does secondary succession usually occur more rapidly than primary succession.
trapecia [35]
Secondary succession occurs more rapidly than primary because soil is already available so there is no need for any other species. Also, there might still be surviving species in the soil present like seeds, roots and other plant organs.
5 0
3 years ago
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