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Soloha48 [4]
3 years ago
11

Resistance of a material being scratched in known as

Chemistry
2 answers:
Wittaler [7]3 years ago
3 0
Resistance of a material being scratched in known as: Hardness
ddd [48]3 years ago
3 0

Answer:

Hardness

Explanation:

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When Earth receives energy from the Sun, ____. a. some energy is reflected back into space b. some is absorbed by the atmosphere
Triss [41]

Answer:

D - all of the above

Explanation:

5 0
2 years ago
Most minerals on earth's surface contain what
muminat
The answer is silicates!!! Hope this helps!!!
8 0
3 years ago
How many phase rule variables must be specified to fix the thermodynamic state of each of the following systems? Show how you de
Murrr4er [49]

Answer: (i) F = 2

(ii) F = 3

(iii) F = 2

Explanation:

We would be applying the famous Gibbs Phase Rule to explaining this problem;

By applying the formula;

F+P = C +2

Where P = this represent the phase

F = this is called the degree of freedom

C = this represent the component in the system

Ok let us begin;

(i). from this we can see that there are 2 components i.e. (water + ethanol) and the phase in question is a vapor phase + liquid phase.

So from the formula;

F = C-P+2

F = 2 – 2 + 2 = 2

Therefore, F = 2.

(ii). Also, from the statement, we can figure there are 3 components, while the phases are two like the previous one above, i.e. liquid + vapor

F = 3 – 2 + 2 = 5 – 2 = 3

F = 3

(iii). From this statement, we can figure there are 3 components, and the phases are 3 i.e. (2 liquid phases + 1 vapor phase)

From the formula;

F = 3 – 3 + 2 = 0 + 2

F = 2

6 0
3 years ago
What is the net ionic equation for the reaction between nickle (II) chloride and silver (I) nitrate?
weqwewe [10]

Answer:

Down below

Explanation:

The following uses nickel(II) chloride

2AgNO3(aq) + NiCl2(aq) ==> Ni(NO3)2(aq) + 2AgCl(s) Molecular

8 0
3 years ago
2. Calculate the density of a metal that occupies 17.75 cm and has a mass of 342.93 g. [D = m/V]
satela [25.4K]

Answer:

19.32

Explanation:

the density is given by the mass over volume

the mass In this case is 342.93 and the volume is 17.75

d=342.93g/17.75cm

=19.32g/cm

i hope this helps

3 0
2 years ago
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