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3 years ago

32.7 grams of water vapor takes up how many liters at standard temperature and pressure (273 K and 100 kPa)?

1 answer:

5 0

Under standard temperature and pressure conditions, it is known that 1 mole of a gas occupies 22.4 liters.

From the periodic table:
molar mass of oxygen = 16 gm
molar mass of hydrogen = 1 gm
Thus, the molar mass of water vapor = 2(1) + 16 = 18 gm

18 gm of water occupies 22.4 liters, therefore:
volume occupied by 32.7 gm = (32.7 x 22.4) / 18 = 40.6933 liters

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In a molecule of calcium sulfide, calcium has two valence electron bonds, and a sulfur atom has six valence electrons. How many

mote1985 [20]

There are none

<h3>Further explanation</h3>

Given

a molecule of calcium sulfide

two valence electron of Calcium(Ca)

six valence electrons of Sulfur(S)

Required

number of lone pairs of electrons

Solution

Lewis structure shows the form of bonds that occur in the valence electrons of an element or compound

Valence electrons are electrons used in a chemical bond

To achieve stability, the element S needs 2 more electrons which are obtained from 2 electrons from the Ca element,

A lone pair electron means refers to an unshared pair of electrons(not bonding to the other atoms)

This condition usually occurs in covalent bonds

As we know, the bond between Ca, which is a group 2 (metal) with Sulfur in group 16, is an ionic bond because it occurs between metal and non-metal ions, so there is no sharing of electrons, but there is a release of electrons from Ca ions to S ions to form an octet. , so all the valence electrons in S are paired

7 0

3 years ago

how many moles of potassium hydroxide are needed to completely react with 1.73 miles of aluminum sulfate according to the follow

Masteriza [31]

<h3><u>Answer; </u></h3>

=10.38 moles KOH

<h3><u>Explanation</u>;</h3>

The balanced equation.

6KOH + Al2(SO4)3 --> 3K2SO4 + 2Al(OH)3

From the equation;

1 mole of aluminum sulfate requires 6 moles of potassium hydroxide.

Moles of Aluminium sulfate; 1.73 moles

Moles of KOH;

1 mol Al2(SO4)3 : 6 mol KOH = 1.73 mol Al2(SO4)3 : x mol KOH

Thus; x = (6 × 1.73)

<u> =10.38 moles KOH </u>

4 0

3 years ago

Read 2 more answers

List in ascending order the different layers of atmosphere, their heights, and main their features. Help please!!! :•)

Anika [276]

Answer:

Troposphere

Stratosphere

Mesosphere

Thermosphere

Exosphere

Explanation:

These are all listed in ascending order, hope this helps!

6 0

3 years ago

LOS AMOOOO 1 AL 40 COMENTÉN

OleMash [197]

Answer:

0 ni siquiera te conozco

Explanation:

6 0

3 years ago

Consider the hypothetical serine protease, which shows the specificity pockets. The S1 pocket has a glutamic acid in the bottom,

BigorU [14]

Answer:

See explaination

Explanation:

Hydrophobic literally means “the fear of water”. Hydrophobic molecules and surfaces repel water. Hydrophobic liquids, such as oil, will separate from water. Hydrophobic molecules are usually nonpolar, meaning the atoms that make the molecule do not produce a static electric field.

Please see attachment for the step by step solution of the given problem.

8 0

3 years ago