Please help a girl out

Jesim wants to help Nancy understand the movement that happens during one Earth year, Jassim holds a small globe representing Ea

Alla [95]

The answer is D jessim should spin the glove quickly while walking in a circle around nancy.

4 0

3 years ago

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Rank the ions in each set in order of decreasing size, and explain your ranking:

iragen [17]

Ranking of the ions in each set in order of decreasing size -

Cs+ > Ba²⁺ > Sr²⁺

Cs+ has the biggest size, because its more downward (compared to Sr2+) and more to the left (compared) ot Ba2+.

Sr2+ has the smallest size because it's more upwords (compared to Cs+ and Ba2+).

For isoelectronic ions, the greater the nuclear charge , the greater is the attraction for electrons and smaller is ionic radius. In other words, size of the isoelectronic ions decreases with increase in atomic number.

Cl3+ has the smallest ion among all.

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5 0

2 years ago

Calculate the molar solubility of silver(i) bromate with ksp = 5. 5×10-5. also, convert the molar solubility to the solubility.

Sindrei [870]

The molar solubility is 7.4× $10^{-3}$ M and the solubility is 7.4× $10^{-3}$ g/L .

Calculation ,

The dissociation of silver bromide is given as ,

$AgBr$ → $Ag ^{+}$ + $Br^{-}$

S

- S S

Ksp = [ $Ag ^{+}$ ] [ $Br^{-}$ ] = [S] [ S ] = $S^{2}$

S = √ Ksp = √ 5. 5× $10^{-5}$ = 7.4× $10^{-3}$

The solubility =7.4× $10^{-3}$ g/L

The molar solubility is the solubility of one mole of the substance.

Since , one mole of $AgBr$ is dissociates and form one mole of each $Ag ^{+}$ and $Br^{-}$ ion . So, solubility is equal to molar solubility but unit is different.

Molar solubility = 7.4× $10^{-3}$ mol/L = 7.4× $10^{-3}$ M

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7 0

1 year ago

According to the periodic table, lithium and nitrogen have the same number of

Vaselesa [24]

Lithium and nitrogen have the same electron energy levels, actually 2 levels.

6 0

3 years ago

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The following name is wrong. Draw the structure based on it and correct the name: 1,1,1âˆ’trimethylheptane

Nana76 [90]

2,2-Dimethyloctane is the correct name.

Eight C atoms make up the longest continuous carbon chain, hence the term "octane" for this molecule.

<h3>Description of the chemical structure</h3>

There are 31 bonds in the 2,2-Dimethyloctane molecule overall (s) There are 5 rotatable bonds and 9 non-H bonds (s).
Skeletal formula, which is the accepted notation for organic compounds, is another name for the 2D chemical structure illustration of 2,2-Dimethyloctane.
Skeletal formula, which is the accepted notation for organic compounds, is another name for the 2D chemical structure illustration of 2,2-Dimethyloctane.
In the 2,2-Dimethyloctane chemical structure, the carbon atoms are implied to be at the corner(s) and hydrogen atoms coupled to carbon atoms are not mentioned; instead, it is assumed that each carbon atom is connected to enough hydrogen atoms to form four bonds.
Based on the ball-and-stick model, which shows both the three-dimensional position of the atoms and the bonds tying them together, the 3D chemical structure image of 2,2-Dimethyloctane is created.
In order to provide a clearer picture of the atoms and bonds throughout the 2,2-Dimethyloctane chemical structure model, the radius of the spheres is thus smaller than the rod lengths.

<h3>Molecular Formula - $C_{10} H_{22}$ </h3><h3>Chemical Properties</h3>

Calculated Log P: 6.434
Molecular Weight: 142.2838
Bonds That Rotate: 9
H Acceptors :

H Donors: 0

2,2-Dimethyloctane, a gasoline hydrocarbon byproduct of aerobic biodegradation.

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4 0

2 years ago