2 years ago

What is the degree of lightness or darkness of a material is called its

Chemistry

1 answer:

Ede4ka [16]2 years ago

4 0

Is called it’s value.

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Lesechka [4]

Answer:

Transition elements are elements which have partially filled d-orbitals and form at least one or more stable ions.

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3 years ago

An element crystallizes in a face-centered cubic lattice. If the length of an edge of the unit cell is 0.408 nm, and the density

V125BC [204]

Answer:

Explanation:

For the density of a face-centered cubic:

$Density = \dfrac{4 \times M_w}{N_A \times a^3}$

where

$M_w$ = molar mass of the compound

$N_A=$ avogadro's constant

$a^3 =$ the volume of a unit cell

Given that:

Density $(\rho)$ = 19.30 g/cm³

a = 0.408 nm

a = $0.408 \times 10^{-9} \times 10^{2} \ cm$

a = $4.08 \times 10^ {-8} \ cm$

∴

$19.3 = \dfrac{4 \times M_w}{(6.023 \tmes 10^{23})\times (4.08 \times 10^{-8})^3}$

$M_w= \dfrac{19.3\times (6.023 \times 10^{23})\times (4.08 \times 10^{-8})^3}{4}$

$M_w=197.37 \ g/mol$

Thus, the molar mass of 197.37 g/mol element is Gold (Au).

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3 years ago

Which is more acidic among the following?

GaryK [48]

Answer:

Explanation:

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2 years ago

How many people have died as a results of the spread of virus?

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Answer:

70000000000

Explanation:

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3 years ago

I will give brainliest to correct answer - no links

WINSTONCH [101]

Answer:

C - 23cm

Explanation:

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2 years ago

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