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pickupchik [31]
2 years ago
7

What is the reason behind that the melting and boiling point of iron is more than that of sodium? Write any two differences betw

een metalloids and alloys.​
Chemistry
1 answer:
liraira [26]2 years ago
5 0

Answer:

difference between metal and alloy is that the metal is a pure substance whereas the alloy is a mixture of two or more components.

Explanation:

Mostly the metalloids have the appearance just like the metallic appearance And also they are the brittle one's . Boron and silicon are the example. Note; By combining with other metals metalloid can form the alloy

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Given the following reaction:
Elan Coil [88]

(Answer) 0.166 moles of copper (I) nitride are needed.

Mass of copper (I) oxide = 35.7 g

Moles of copper (I) oxide formed by the reaction = (Mass / molar mass)

= ( 35.7 g / 143.09 g/mol ) = 0.25 moles

According to the balanced chemical equation,

mole ratio of copper (I) nitride and copper (I) oxide = 2: 3

Therefore, moles of copper (I) nitride needed to form 0.25 moles of copper (I) oxide = (2/3 x 0.25) moles = 0.166 moles.

Thus, 0.166 moles of copper (I) nitride are needed to form 0.25 moles of copper (I) oxide.

7 0
3 years ago
C) A standard cubic foot of natural gas carries with it about 1.1 x 106 J of energy. Natural gas currently costs about $16.25 pe
pochemuha

Answer:

67692.31 J

396811.337 J

Explanation:

(a) The cost of standard cubic foot of natural gas = $16.25

The energy related to standard cubic foot of natural gas = 1.1\times 10^{6}\ J

Thus, As according to the question,

$16.25 of natural gas have 1.1\times 10^{6}\ J of energy.

$1 of natural gas have \frac{1.1\times 10^{6}}{16.25}\ J of energy.

<u>The amount of energy = 67692.31 J</u>

(b) The cost of one short ton of coal = $56.45

The energy related to the short ton of coal = 2.24\times 10^{7}\ J

Thus, As according to the question,

$56.45 of coal have 2.24\times 10^{7}\ J of energy.

$1 of coal have \frac{2.24\times 10^{7}}{56.45}\ J of energy.

<u>The amount of energy = 396811.337 J</u>

<u></u>

6 0
3 years ago
Mass= 108 g volume 12 cm3
Temka [501]
Are you trying to find density? if so divide 108g by 12cm3 which is 9g/cm3
6 0
3 years ago
The jelly like substance that fills the cell and holds organelles is called
I am Lyosha [343]
This is called the cytoplasm.
7 0
3 years ago
Read 2 more answers
How does heat alike from temperature
inn [45]
They are both related to thermal energy.

Heat is just another word for thermal energy... or the excited state of atoms in a body of mass.
Temperature is a way to measure this heat.
3 0
3 years ago
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