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3 years ago

How are the formulas for ionic and covalent compounds determined?

Chemistry

2 answers:

SVEN [57.7K]3 years ago

8 0

Answer:

Writing Formulas of Ionic Compounds

The cation is written first, followed by the monatomic or polyatomic anion. The subscripts in the formula must produce an electrically neutral formula unit.

olya-2409 [2.1K]3 years ago

5 0

Answer:

Pause the video to take as much time as needed. Pause it to create more wait-time to answer questions before I move on. One of the best ways to learn is to quiz yourself as you go along.

Explanation:

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A chemist must dilute of aqueous aluminum chloride solution until the concentration falls to . He'll do this by adding distilled

marshall27 [118]

Answer:

0.257 L

Explanation:

The values missing in the question has been assumed with common sense so that the concept could be applied

Initial volume of the AICI3 solution $=23.1 \mathrm{mL}$

Initial Molarity of the solution $=833 \mathrm{mM}$

Final molarity of the solution $=75.0 \mathrm{mM}$

Final volume of the solution $=?$

From Law of Dilution, $M_{f} V_{f}=M_{i} V_{i}$

$\Rightarrow V_{f}=\frac{M_{i} V_{i}}{M_{f}}=\frac{833 \mathrm{mM} \times 23.1 \mathrm{mL}}{75.0 \mathrm{mM}}=256.564 \mathrm{mL}=0.256564 \mathrm{L}=0.257 L$

Final Volume of the solution $=0.257$

7 0

3 years ago

Rank the following compounds from highest boiling to lowest boiling. To rank items as equivalent, overlap them.

Olegator [25]

1-pentanol > 1-butanol > 1-chlorobutane > pentane

Explanation:

You my find in the attached picture the structures of the compounds, names and also the variation of their boiling points.

Alcohols have higher boiling points because they form hydrogen bonds between the molecules.

Learn more about:

boiling points in organic compounds

brainly.com/question/2153588

#learnwithBrainly

7 0

2 years ago

What is the angle between two of the nitrogen-hydrogen bonds in the ammonium (NH4+) ion?

Arlecino [84]

Answer:

109° 27'

Explanation:

The ammonium ion is tetrahedral in shape, all the HNH bonds are exactly at the tetrahedral bond angle since there are only bond pairs in the structure and no lone pairs. Recall that lone pairs decrease the bond angke from the ideal value in a tetrahedron due to higher repulsion.

8 0

3 years ago

Ozone depleting chemicals are MOST

mina [271]

Ozone depleting chemicals are most likely belong to <u>halogen </u>group on the periodic table.

<h3>Ozone depleting chemicals are most likely to belong to which group on the periodic table?</h3>

Ozone depleting chemicals are the halogen group on the periodic table. Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), halons, methyl bromide, carbon tetrachloride, hydrobromo-fluorocarbons and methyl chloroform. Fluorine, chlorine, bromine, iodine, astatine and tennessine are the elements of halogen group elements. These elements greatly affected the ozone layer.

So we can conclude that Ozone depleting chemicals are most likely belong to halogen group on the periodic table.

Learn more about ozone here: brainly.com/question/5019112

#SPJ1

3 0

1 year ago

In asparagine, determine the maximum number of hydrogen bonds that each o, n , or h atom can make to a water molecule. (consider

Mkey [24]

A Hydrogen bond will stablish between the protons of the water and the free electron pairs of the electronegative atoms on asparagine, so:

a) can make up to 2 hydrogen bonds, since it has 2 free electron pairs.

b) can make up to 3 hydrogen bonds, since the negative charge makes up for 1 free electron pair aditional to the 2 oxygen already has.

c) can make up to 1 hydrogen bond, since it has 1 free electron pair.

d) since they have no free electron pairs, they cannot establish hydrogen bonds.

8 0

3 years ago