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3 years ago

Which of the following is malleable? A. glass B. pottery C. ice D. gold

Chemistry

2 answers:

timurjin [86]3 years ago

6 0

$\boxed{{\text{D}}{\text{. Gold}}}$ is malleable.

Further Explanation:

Periodic table:

Tabular arrangement of different elements in accordance with their increasing atomic numbers is known as periodic table. It consists of grouping of elements with similar physical and chemical properties. In this table, horizontal rows are called periods while verticalcolumns are termed as groups.

Elements are not only classified in various periods and groups, but also as metals, non-metals and metalloids as well. The leftmost region of this table indicates metals while the rightmost signifies the presence of non-metals. Between metals and non-metals lies a third class of elements known as metalloids. These have some of their properties similar to those of metals and others with non-metals.

Malleability:

The property of materialthat allows it to get deformed by application of external pressure is called malleability.Such materials can be drawn into thin sheets by hammering or rolling.

Since metals have the tendency to slip over each other without breakage of metallic bonds in between them, these are malleable in nature.

Among glass, pottery, gold and ice; gold is a metal and is therefore malleable in nature.

Learn more:

Which ion was formed by providing the second ionization energy? brainly.com/question/1398705
Write a chemical equation representing the first ionization energy for lithium: brainly.com/question/5880605

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Periodic classification of elements

Keywords: metalloids, non-metals, periodic table, arrangement, metals, malleable, pottery, glass, gold, ice, thin sheets, rolling, hammering, periods, groups.

gogolik [260]3 years ago

4 0

The answer is D. Gold. Malleability, the ability for a material to be hammered or shaped into thin sheets, is a common property of metals. Among the choices, gold is the only metal. Also, gold is considered to be the most malleable metal.

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densk [106]

Answer:

Q sln = 75.165 J

Explanation:

a constant pressure calorimeter:

Q sln = mCΔT

∴ m sln = m Ba(OH)2 + m HCl

∴ molar mass Ba(OH)2 = 171.34 g/mol

∴ mol Ba(OH)2 = (0.06 L)(0.3 mol/L) = 0.018 mol

⇒ mass Ba(OH)2 = (0.018 mol)(171.34 g/mol) = 3.084 g

∴ molar mass HCl = 36.46 g/mol

∴ mol HCl = (0.06 L)(0.60 mol/L) = 0.036 mol

⇒ mass HCl = (0.036 mol)(36.46 g/mol) = 1.313 g

⇒ m sln = 3.084 g + 1.313 g = 4.3966 g

specific heat (C):

∴ C sln = C H2O = 4.18 J/g°C

∴ ΔT = 26.83°C - 22.74°C = 4.09°C

heat absorbed (Q):

⇒ Q sln = (4.3966 g)(4.18 J/g°C)(4.09°C)

⇒ Q sln = 75.165 J

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3 years ago

At a festival, spherical balloons with a radius of 280. Cm are to be inflated with hot air and released. The air at the festival

evablogger [386]

Answer:

8608.18 balloons

Explanation:

Hello! Let's solve this!

Data needed:

Enthalpy of propane formation: 103.85kJ / mol

Specific heat capacity of air: 1.009J · g ° C

Density of air at 100 ° C: 0.946kg / m3

Density of propane at 100 ° C: 1.440kg / m3

First we will calculate the propane heat (C3H8)

3000g * (1mol / 44g) * (103.85kJ / mol) * (1000J / 1kJ) = 7.08068 * 10 ^ 6 J

Then we can calculate the mass of the air with the heat formula

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m = Q / c delta T = (7.08068 * 10 ^ 6 J) / (1.009J / kg ° C * (100-25) ° C) =

m = 93566.96kg

We now calculate the volume of a balloon.

V = 4/3 * pi * r ^ 3 = 4/3 * 3.14 * 1.4m ^ 3 = 11.49m ^ 3

Now we calculate the mass of the balloon

mg = 0.946kg / m3 * 11.49m ^ 3 = 10.87kg

The amount of balloons is

93566.96kg / 10.87kg = 8608.18 balloons

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Explanation:

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