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AysviL [449]
3 years ago
7

Which mineral above would be the most difficult to scratch?

Chemistry
2 answers:
juin [17]3 years ago
6 0
Calcite is most difficult to scratch.
snow_tiger [21]3 years ago
3 0
What are the choices
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Which corresponds to a pressure of 1.23 atm??
Vadim26 [7]

Atmospheric pressure<span>, sometimes also called barometric pressure, is the pressure exerted by the weight of air in the </span>atmosphere of Earth<span> (or that of another planet)</span>

1 atm is equivalent to = 101325 Pa

= 760 mmHg

= 760 torr

= 1.01325 bar

So 1.23 atm is equal to

= 124629.8 Pa

= 934.8 mmHg

= 934.8 torr

<span>= 1.2462 bar</span>

6 0
3 years ago
By studying the distribution of different types of fossils, geologists have determined that some plates have traveled great dist
WITCHER [35]

Answer:

A. Fossils of organisms that lived in warm climates have been found in arctic environments.

Explanation:

One of the logic used by Geologists to justify plate movement over a region of space is that the fossils of organisms that lived in warm climates have been found in arctic environments.

  • this is as a result of plate tectonics.
  • organisms that are well adapted to warm climates in times past have their relics preserved as fossils.
  • their fossils are no found today around the arctic environment which are cold
  • this suggests that the plate must have drifted or moved
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3 years ago
Clouds are named for 3 different attributes including shape, _____________ &amp; precipitation. *
mart [117]

Answer:

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4 0
3 years ago
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Express each of the following answers in the IUPAC format. Do not include any capitals or spaces in your name. Separate multiple
lorasvet [3.4K]

The full question is shown in the image attached

Answer:

See explanation

Explanation:

In naming an alkane, the first thing we do is to obtain the parent chain by counting the number of carbon atoms in the chain.

When we obtain that, then we identify the substituents and number them in such a way that they have the lowest numbers. The compounds shown have the following names according to the order in which the structures appear in the image attached;

1. 2-methyl propane

2. 2,4-dimethyl heptane

3. 2,2,3,3-tetramethyl butane

4. 5-ethyl-2,4-dimethyl octane

5 0
3 years ago
When can I use ideal gas law?
Elis [28]
Answer:

The ideal gas law can be used in stoichiometry problems in which chemical reactions involve gases. Standard temperature and pressure (STP) are a useful set of benchmark conditions to compare other properties of gases. At STP, gases have a volume of 22.4 L per mole.
3 0
3 years ago
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