Help me please I need to pass this test

Which of the following molecular compounds does NOT need the usage of prefix for the first element

Mrrafil [7]

Answer:

SO2

Explanation:

that's my answer

Sana mKatolong

3 0

2 years ago

A non-stoichiometric compound is a compound that cannot be represented by a small whole-number ratio of atoms, usually because o

ikadub [295]

<span>Average oxidation state = VO1.19
Oxygen is-2. Then 1.19 (-2) = -2.38
Average oxidation state of V is +2.38

Consider 100 formula units of VO1.19
There would be 119 Oxide ions = Each oxide is -2. Total charge = -2(119) = -238
The total charge of all the vanadium ions would be +238.
Let x = number of of V+2
Then 100 – x = number of V+3
X(+2) + 100-x(+3) = +238
2x + 300 – 3x = 238
-x = 238-300 = -62
x = 62

Thus 62/100 are V+2
62/100 * 100 = 62%

</span>62 % is the percentage of the vanadium atoms are in the lower oxidation state. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.

7 0

3 years ago

Silver sulfate (Ag2SO4) is slightly soluble in water and it partly dissolves at the equilibrium according to the following balan

natka813 [3]

Answer:

a) S = 0.0152 mol/L

b) S' = 4.734 g/L

Explanation:

Ag2SO4 ↔ 2Ag+ + SO42-

S 2S S...............in the equilibrium

Ksp = 1.4 E-5 = [ Ag+ ]² * [ SO42-]

a) molar solubility:

⇒ Ksp = ( 2S) ² * S = 1.4 E-5

⇒ 4S² * S = 1.4 E-5

⇒ S = ∛ ( 1.4 E-5 / 4 )

⇒ S = 0.0152 mol/L

b) solubility ( S' ) in grams per liter:

∴ Mw Ag2SO4 = 311.799 g/mol

⇒ S' = 0.0152 mol/L * ( 311.799 g/mol )

⇒ S' = 4.734 g/L

4 0

3 years ago

The empirical formula of a chemical substance is C2H3. The molar mass of a molecule of the substance is 54.091 g/mol. What is th

Stella [2.4K]

Answer:- Molecular formula of the compound is $C_4H_6$ .

Solution:- An empirical formula and molar mass of the compound is given and we are asked to calculate it's molecular formula. First of all we calculate the empirical formula mass and then divide the molar mass by empirical formula mass to find out the number of empirical formula units.

Empirical formula is multiplied by the number of empirical formula units to get the molecular formula.

Empirical formula mass = 2(12.01) + 3(1.01)

= 24.02 + 3.03

= 27.05

number of empirical formula units = $\frac{54.091}{27.05}$

= 2

So, molecular formula of the compound = $2(C_2H_3)$

= $C_4H_6$

4 0

3 years ago

Predict the neutral organic product of the reaction of cycloheptene with water and sulfuric acid.

Leokris [45]

The term hydration of an alkene is defined as the addition of water across a double bond.

<h3>What is hydration?</h3>

The term hydration of an alkene is defined as the addition of water across a double bond. The process of hydration always yields an alcohol as -OH is aded to one of the carbon atoms in the doube bond.

The reaction commences with the attack of the -OH group by water and is completed by a proton from acid. The neutral organic product of the reaction of cycloheptene with water and sulfuric acid is shown in the image attached.

Learn more about hydration: brainly.com/question/12034258

7 0

2 years ago