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lesya692 [45]
3 years ago
13

How are pure crystalline substances characterized?

Chemistry
1 answer:
hoa [83]3 years ago
4 0
A pure crystalline substance is a substance with an almost perfect regular and periodic pattern in a solid state. This makes this type of substance a hard one compared to an amorphous substance which is soft because of the irregular pattern within.
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In the reaction, C3H8 (g) + 502 (g) – 3CO2 (g) + 4H2O (g), all of the reactants and
Grace [21]

Answer:

gas

Explanation:

(g) means gas

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(s) solid

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What is the normal ph of rain?
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Why is a saturated solution of magnesium hydroxide less basic than a saturated solution of potassium hydroxide?
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What is the relationship between the atomic mass of an element and a mole of that element's atoms?
Amiraneli [1.4K]

Explanation:

i think

Each ion, or atom, has a particular mass; similarly, each mole of a given pure substance also has a definite mass. The mass of one mole of atoms of a pure element in grams is equivalent to the atomic mass of that element in atomic mass units (amu) or in grams per mole (g/mol).

8 0
4 years ago
What is the specific heat of an object that weighs 15 grams and changes temperature from 30°C to 37°C when 50 J of heat is added
Scorpion4ik [409]

Answer:

0.4762 J/g°C.

Explanation:

  • It is known that:

<em>The amount of heat released to water = Q = m.c.ΔT.</em>

where, m is the mass of water (m = 15.0 g).

c is the specific heat capacity of water = ??? J/g°C.

ΔT is the temperature difference = (final T - initial T = 37.0°C - 30.0°C = 7.0°C).

<em>∴ The specific heat capacity of water = c = Q/m.ΔT</em> = (50.0 J)/(15.0 g)(7.0°C) = <em>0.4762 J/g°C.</em>

8 0
3 years ago
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