When air bags inflate, nitrogen gas is formed from sodium azide, along with solid sodium. what reaction category is this?

. Citric acid, which can be obtained from lemon juice, has the molecular formula C6H8O7. A 0.250-g sample of citric acid dissolv

marysya [2.9K]

Answer:

3 acidic hydrogens per molecule of citric acid

Explanation:

In a sample of 37.2 mL(0.0372 L) of 0.105 mol/L of NaOH, will have:

n = 0.105x0.0372 = 0.0039 mol of NaOH

The dissociation of NaOH will give the same number of moles of Na⁺ and OH⁻.

The molar mass of citric acid is:

C: 12g/mol x 6 = 72 g/mol

H: 1g/mol x 8 = 8g/mol

O: 16 g/mol x 7 = 112 g/mol

192 g/mol

So, 0.250g of the acid has

n = mass/molar mass

n = 0.250/192

n = 0.0013 mol.

To be neutralized, it will be necessary 0.0039 mol of acidic hydrogens to react with the 0.0039 mol of OH⁻.

The dissociation reaction of one molecule of the acid will give the stoichiometry:

1 mol of acid ----------------------- x mol of acidic hydrogens

0.0013 mol --------------------------- 0.0039

For a simple direct three rule:

0.0013x = 0.0039

x = 3 acidic hydrogens per molecule of citric acid.

3 0

4 years ago

Elements on the far right of the periodic table are

Illusion [34]

Answer

Noble Gases

Explanation: It is noble gases On the Website Ptable it will show you all the facts you need to know about each element

8 0

3 years ago

How many grams are in 4.40 mol of sodium chloride (NaCl)?

stepan [7]

A mole of sodium chloride has mass 58.44 grams. You get that from adding the molar masses of sodium and chlorine, which are listed on the periodic table.

<span>58.44 g/mol * 4.40 mol = 257.1 or ≈ 257 grams with 3 significant figures</span>

8 0

3 years ago

Read 2 more answers

How many grams of magnesium oxide are formed if 20.9 grams of Mg and 15.2 g of O2 react.

anyanavicka [17]

Answer:

Mass of magnesium oxide formed = 35.1 g

Explanation:

Given data:

Mass of Mg = 20.9 g

Mass of O₂ = 15.2 g

Mass of magnesium oxide formed = ?

Solution:

Chemical equation:

2Mg + O₂ → 2MgO

Number of moles of Mg:

Number of moles = mass/molar mass

Number of moles = 20.9 g/ 24 g/mol

Number of moles = 0.87 mol

Number of moles of O₂:

Number of moles = mass/molar mass

Number of moles = 15.2 g/ 32 g/mol

Number of moles = 0.475 mol

Now we will compare the moles of MgO with magnesium and oxygen.

Mg : MgO

2 : 2

0.87 : 0.87

O₂ : MgO

1 : 2

0.475 : 2/1×0.475 = 0.95

Number of moles of MgO formed by Mg are less thus Mg will limiting reactant.

Mass of MgO:

Mass = number of moles × molar mass

Mass = 0.87 mol × 40.3 g/mol

Mass = 35.1 g

6 0

3 years ago

Determine the electron-group arrangement, molecular shape, and ideal bond angle(s) for each of the following:

maksim [4K]

The electron group arrangement of CF₄ is penta-atomic. The molecular shape is tetrahedral, and the bond angle is 109.5°.

<h3>What is the electron group arrangement?</h3>

Electron group arrangement is the arrangement of the electron of a compound. This is the geometry of the structure of the compounds. The different types of arrangements are, trigonal planar, tetrahedral, trigonal bipyramidal, or octahedral.

The carbon tetrafluoride has a tetrahedral structure, with a bond angler of 109.5°.

Thus, the electron group arrangement of CF₄ is penta-atomic. The molecular shape is tetrahedral, and the bond angle is 109.5°.

To learn more about electron group arrangement, refer to the link:

brainly.com/question/17018194

#SPJ4

4 0

2 years ago