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makvit
5 days ago
9

A typical aspirin tablet contains 500. mg of c9h8o4. how many moles of c9h8o4 molecules and how many molecules of acetylsalicyli

c acid are in a 500. mg tablet?
Chemistry
1 answer:
VMariaS [2.6K]5 days ago
6 0
According to the periodic table:
the molar mass of carbon is 12 g/mol
the molar mass of hydrogen stands at 1 g/mol
the molar mass of oxygen is 16 g/mol

the molar mass of <span>acetylsalicylic acid calculates to 9(12) + 8(1) + 4(16) = 180 g/mol

To find the number of moles, we apply the formula mass / molar mass = 0.5 / 180 = 2.778 x 10^-3 moles

To determine the number of molecules, we multiply the moles by Avogadro's number as shown:
number of molecules = </span>2.778x10^-3x6.02x10^23 =1.672 x 10^21 molecules
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What is the molar mass of citric acid (C6H8O7) and baking soda (NaHCO3)?
Alekssandra [2711]

Answer:

1. 192.0 g/mol.

2. 84.0 g/mol.

Explanation:

  • The molar mass refers to the weight of all atoms combined in a molecule measured in grams per mole.
  • To find a molecule's molar mass, we begin by looking up the atomic weights of the relevant elements from the periodic table. Next, we tally the atoms present and multiply that by their respective atomic weights.

1. Molar mass of citric acid (C₆H₈O₇):

Molar mass of C₆H₈O₇ = 6(atomic mass of C) + 8(atomic mass of H) + 7(atomic mass of O) = 6(12.0 g/mol) + 8(1.0 g/mol) + 7(16.0 g/mol) = 192.0 g/mol.

2. Molar mass of baking soda (NaHCO₃):

Molar mass of NaHCO₃ = (atomic mass of Na) + (atomic mass of H) + (atomic mass of C) + 3(atomic mass of O) = (23.0 g/mol) + (1.0 g/mol) + (12.0 g/mol) + 3(16.0 g/mol) = 84.0 g/mol.

4 0
1 month ago
Acrylonitrile () is the starting material for many synthetic carpets and fabrics. It is produced by the following reaction. If 1
alisha [2704]

2C3H6 (g) + 2NH3 (g) + 3O2 (G) -> 2C3H3N (g) + 6H2O (g)

To begin, this isn't really a chemistry forum, but anyway.

This represents a limiting reagent scenario.

Set it up as a Dimensional Analysis issue.

Begin with your desired outcome.

Your goal is to find the mass of acrylonitrile (C3H3N)

so you should initiate with that (I'll abbreviate Acrylonitrile as ACL for convenience)

(g) = (53 g of ACL/1mol ACL) (2 mols ACL/2 mol C3H6)/ (1mol C3H6/42 grams) (15.0 grams)

If you calculate that, you will find that 15 grams of C3H6 yields 18.9 grams of acrylonitrile produced.

Utilize the same approach for the remaining two reactants.

So, I figured it out, and for

oxygen, I calculated 11.04 grams

and for ammonia, I calculated 15.29 grams

This means that the maximum possible production is 11.04 grams, since to create any additional amount, more O2 would be necessary, but with only 10 grams available, that's the upper limit for this reaction.

The other two reactants are in excess.

Please rate as brainliest!

3 0
22 days ago
Describe the cause of attraction between molecules of water
lions [2653]
In a water molecule, the sharing of electrons occurs between the oxygen and hydrogen atoms within covalent bonds; however, this sharing is unequal. The oxygen atom holds a stronger pull on the electrons compared to the hydrogen atoms in the bond.
5 0
1 month ago
Arrange the sublevels in ascending order by the number of electrons they can contain. p sublevel s sublevel d sublevel f subleve
eduard [2509]

The electronic configuration of an atom details how electrons are organized across various shells and sublevels.

There are four categories of sublevels: s, p, d, and f. Each of these sublevels contains orbitals, which are regions with a high likelihood of containing an electron, with each orbital capable of holding a maximum of 2 electrons.

As a result,

s-sublevel possesses 1 orbital, allowing for a maximum of 2 electrons.

p-sublevel has 3 orbitals, accommodating a maximum of 6 electrons.

d-sublevel encompasses 5 orbitals, permitting a maximum of 10 electrons.

f-sublevel includes 7 orbitals, with a maximum of 14 electrons.

Therefore, the ascending order of sublevels based on the maximum number of electrons they can hold is:

s < p < d < f

3 0
27 days ago
Read 2 more answers
For each reaction, identify the element that gets reduced and the element that gets oxidized. 2 AgCl + Zn ⟶ 2 Ag + ZnCl 2 2AgCl+
lorasvet [2515]

Answer:

Explanation:

Oxidation:

Oxidation refers to the process where electrons are lost, resulting in an increase in the oxidation state of an atom of an element.

Reduction:

Reduction is characterized by the acquisition of electrons, leading to a decrease in the oxidation number.

Oxidizing agents:

Oxidizing agents facilitate oxidation of other substances while they themselves undergo reduction.

Reducing agents:

Reducing agents cause the other element to be reduced, while they are oxidized in the process.

Examine the following reaction:

2AgCl + Zn  → 2Ag + ZnCl₂

In this instance, the oxidation state of Zn on the left is 0 and rises to +2 on the right, indicating it is oxidized, while the oxidation state of Ag drops from +1 on the left to 0 on the right, showing it is reduced.

4NH₃  +  3O₂   →   2N₂ +  6H₂O

For this reaction, nitrogen's oxidation state shifts from -3 on the left to 0 on the right, signifying it is oxidized, whereas oxygen decreases from 0 to -2, indicating it gets reduced.

Fe₂O₃ +  2Al  →   Al₂O₃ +  2Fe

Here, the oxidation state of iron reduces from +3 on the left to 0 on the right, meaning it is reduced, while aluminum shifts from 0 to +3, indicating it is oxidized.

4 0
7 days ago
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