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harina [27]
3 years ago
13

The distance between the centers of the two oxygen atoms in an oxygen molecule is 1.21 x 10-8 cm. What is this distance in inche

s?
Chemistry
1 answer:
liq [111]3 years ago
6 0

Answer:

The distance between the centers of the two oxygen atoms in an oxygen molecule is 4.76\times 10^{-9}inch

Explanation:

We know, 1 inch = 2.54 cm

So, 1.21\times 10^{-8}cm=(1.21\times 10^{-8})\times (\frac{1}{2.54})inch

                                              = 4.76\times 10^{-9}inch

So the distance between the centers of the two oxygen atoms in an oxygen molecule is 4.76\times 10^{-9}inch

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The density of lava is 3.1 g/cm². It has a volume of 2700 cm3. How much does this block of lava weigh?
konstantin123 [22]

Answer:

Mass of lava is 8370 g.

Explanation:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

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V=volume

Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

Given data:

density of lava = 3.1 g/cm³

volume= 2700 cm³

mass= ?

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3 years ago
One mL of water is equal to
solniwko [45]

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3 years ago
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We also dismiss option A because neutrons + protons = 81.

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Option E is correct, It is an isotope of Br.

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As usual, Br has 35 electrons, if it represents a ion of net charge -1, it menas it won 1 e-.  

5 0
3 years ago
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