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aev [14]
3 years ago
12

Devices that allow you to do work in an easier way.​

Chemistry
2 answers:
IrinaVladis [17]3 years ago
6 0

Answer:

The most notable of these are known as the "six simple machines": the wheel and axle, the lever, the inclined plane, the pulley, the screw, and the wedge, although the latter three are actually just extensions or combinations of the first three.

romanna [79]3 years ago
6 0

Answer:

The most important devices that made work easier are:

The wheel

The axle

The lever

The inclined plane

The pulley

The screw

The wedge

these are known as the the "six simple machines"

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Mafic magmas may contain up to about 75 percent SiO2 by weight. are viscous and do not flow easily. tend to inhibit passage of g
docker41 [41]

Answer:

result in less violent eruptions than felsic to intermediate magmas.

Explanation:

Mafic magma results in less violent eruptions than felsic to intermediate magma.

They are predominantly made up of a high level of magnesium and iron in their composition.

  1. The have very low silica content in their composition.
  2. They are usually less viscous due to their low silica proportion.
  3. They produce less violent eruptions and allows gases to move and escape easily through them.
  4. Felsic magma on the other hand produce very violent eruptions.
  5. The have a high silica content and often traps gases within them.
8 0
4 years ago
What does dissocation of hydrogen mean ?
Verdich [7]

Answer:

dissociation, in chemistry, separation of a substance into atoms or ions. ... For example, hydrogen molecules (H2) dissociate into atoms (H) at very high temperatures; at 5,000°K about 95% of the molecules in a sample of hydrogen are dissociated into atoms.

Explanation:

5 0
3 years ago
8.7351 x 10-3 to ordinary notation:
BlackZzzverrR [31]
The answer to this question is 8735.1
3 0
3 years ago
Jose times how long sugar takes to dissolve in warm water. He conducts four trials of his experiment. What should he conclude fr
zloy xaker [14]

Answer:

His experiment has very low precision

Explanation:

Precision is how close the answers are together. The answers are increasing in time. So, this makes sence. None of the answers are similar to one another.

5 0
3 years ago
A student titrating a sample of a powdered aspirin tablet to find out how much acetylsalicylic acid is in the sample finds that
leva [86]

Answer:

305 mg

Explanation:

The equation of the reaction is;

C9H8O4 + NaOH = C9H7O4Na + H2O

Amount of NaOH reacted = 15.5/1000 L * 0.109 M = 1.69 * 10^-3 moles

Since the reaction has a 1:1 mole ration, 1.69 * 10^-3 moles of acetylsalicylic acid reacted.

Assuming all the acetylsalicylic acid reacted, then mass of acetylsalicylic acid present = 1.69 * 10^-3 moles * 180.158 g/mol = 0.305 g or 305 mg

3 0
3 years ago
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