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3 years ago

Wha characteristic of metallic bonds allow metals to be malleable and ductile

2 answers:

7 0

Physical Properties of Metals: Malleability and Ductility. The delocalised<span> electrons in the 'sea' of electrons in the metallic bond, enable the metal atoms to roll over each other when a stress is applied</span>

Marrrta [24]3 years ago

5 0

The metallic bond is ductile and malleable because they are not directly bonded with each other.

<u>Explanation:</u>

Metallic bonds rise from electrostatic metallic forces between electrons and positively charged ions. In a metallic bond, electrons are free to move throughout the metallic structure.

Metals are malleable as they can be beaten into sheets and ductile because they can be pulled into wires. This happens because atoms share electrons and can move freely throughout the structure.

Example: Gold is more ductile and malleable when compare to silver and platinum.

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What is the total pressure of air in lungs of an individual with oxygen at 100. mmHg, nitrogen at 573 mmHg, carbon dioxide at 0.

ryzh [129]

Answer: The total pressure of air in lungs of an individual is 760.28 mm Hg

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

$p_{total}=p_A+p_B+p_C...$

Given : $p_{total}$ =total pressure of gases = ?

$p_{O_2}$ = partial pressure of oxygen = 100 mm Hg

$p_{N_2}$ = partial pressure of nitrogen = 573 mm Hg

$p_{CO_2}$ = partial pressure of Carbon dioxide = 0.053 atm = 40.28 mm Hg(1 atm = 760 mmHg)

$p_{H_2O}$ = partial pressure of water vapor = 47 torr = 47 mm Hg (1torr=1 mm Hg)

putting in the values we get:

$p_{total}=(100+573+40.28+47)mmHg$

$p_{total}=760.28mmHg$

Thus the total pressure of air in lungs of an individual is 760.28 mm Hg

5 0

3 years ago

Is density a physical property that can be used to identify matter

Ganezh [65]

Yes. density is a physical property that can be used to identify matter

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4 years ago

The energy that a log has is transformed when burned. How does the chemical energy of the log compare to the heat and light ener

SCORPION-xisa [38]

The amount of chemical energy is equal to the amount of heat and light energy.

This is due to the principle of conservation of energy, which states that the total energy of a system remains constant.

4 0

3 years ago

What element should I do a project on?

yarga [219]

Answer:

Project scope statement?

Explanation:

it's good one just do research on it

3 0

3 years ago

Vanillin (used to flavor vanilla ice cream and other foods) is the substance whose aroma the human nose detects in the smallest

balu736 [363]

Answer:

Cost to supply enough vanillin is $3.2\$$

Explanation:

Threshold limit of vanillin in air is $2.0\times 10^{-11}g$ per litre means there should be $2.0\times 10^{-11}g$ of vanillin in 1L of air to detect aroma of vanillin.

$1ft^{3}=28.32L$

So, $5.0\times 10^{7}ft^{3}=(5.0\times 10^{7}\times 28.32)L$

So amount of vanillin should be present to detect = $(2.0\times 10^{-11}\times 5.0\times 10^{7}\times 28.32)g$

As cost of 50 g vanillin is $112\$$ therefore cost of $(2.0\times 10^{-11}\times 5.0\times 10^{7}\times 28.32)g$ vanillin = $(2.0\times 10^{-11}\times 5.0\times 10^{7}\times 28.32\times 112)\$ = 3.2\$$

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3 years ago