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3 years ago

What is plastic deformation

2 answers:

8 0

a temporary should change that is self reversing after the force is removed so that the object returns to its original shape

notsponge [240]3 years ago

4 0

A permanent deformation or change in shape of a solid body without fracture under the action of a sustained force.

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A sample of a solid nonmetal is compared to a sample of a solid metal. Both samples have the same volume. What is the

EleoNora [17]

Answer:

STRUCTURE:

Metals have a crystalline structure, whereas non-metals possess amorphic structure.

At room temperature, metals are usually solid, except mercury and gallium which are in the liquid state. Conversely, non-metals can be found in solid or gaseous form, except Bromine which is the only non-metal that is present in liquid form.

Density is the ratio of mass to volume; metals have a higher density as compared to non-metals.

Metals look smooth and shiny, while non-metals usually appear dull.

When it comes to hardness, metals are generally hard substance, but it varies from substance to substance. Unlike non-metals is soft substance except diamond, which is the hardest substance on earth.

CHEMICAL PROPERTIES:

Metals support conduction of heat and electricity. Conversely, non-metals are insulators, and so they do not support conduction of heat and electricity.
Metals have a very high melting and boiling point. In contrast, non-metals are boiled and melted at a relatively low temperature.
In the outer shell, metals consist of 1 to 3 electrons, whereas non-metals consist of 4 to 8 electrons.

8 0

3 years ago

When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced.

KatRina [158]

Answer : The mass of aluminium (Al) is 0.413 g

Solution : Given,

Volume of $H_{2}(g)$ at STP = 513 ml = 0.513 L ( 1 L = 1000 ml )

Molar mass of aluminium = 26.98 g/mole

First we have to calculate the moles of $H_{2}(g)$ .

At STP,

1 mole occupies 22.4 L volume

now, 0.513 L gives $\frac{1mole\times0.513L}{22.4L}$ moles of $H_{2}(g)$

The moles of $H_{2}(g)$ = 0.0229 moles

The Net balanced chemical reaction is,

$2Al(s)+6HCl(aq)\rightarrow 2AlCl_3(aq)+3H_2(g)$

From the balanced chemical reaction, we conclude that

2 moles of Aluminium (Al) produces 3 moles of hydrogen gas

Now the number of moles of aluminium required in 0.0229 moles of hydrogen gas = $\frac{2moles\times 0.0229moles}{3moles}$ = 0.0153 moles

Now we have to calculate the mass of aluminium.

Mass of aluminium = number of moles × Molar mass = 0.0153 moles × 26.98 g/mole = 0.413 g

The mass of aluminium required is 0.413 g.

7 0

3 years ago

Concentration in soil: if a 100-g sample of soil contains 10-5 g of toxaphene, what are the toxaphene soil concentrations report

choli [55]

Toxaphene is a kind of pesticides used to protect crops specially cotton crops.

It is present in both solid and gas form.

It has a piney odor.

The physical appearance of toxaphene is yellow in colour amber waxy form.

It is an organochloride insecticide.

In 1940 it was manufactured.

It is a different composition of 670 chemicals.

According to questions,

Given,

Mass of toxaphene = 10^-5 gm

Mass of soil = 100 gm

Toxaphene soil concentrations = 10^-5 / 100 = 10^-7 gm/gm

1 gm/gm = 109 ppb

Concentration in units of ppb =10^-7 * 109 ppb = 100 ppb

To know more about toxaphene here :

brainly.com/question/14619180?referrer=searchResults

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8 0

1 year ago

How can you separate a liquid from a liquid?

Yakvenalex [24]

We can use distillation to separate liquid to liquid

7 0

4 years ago

What is the element with 2 protons on the

Paul [167]

Answer:

Helium

Explanation:

7 0

3 years ago