Name the following ester molecule:

5.(06.04B MC)

NARA [144]

Answer:

Explanation:

1. The reaction will proceed backward, shifting the equilibrium position to the left.

2. The reaction will proceed forward, shifting the equilibrium position to the right.

3. Either add more of the products ( H2O or Cl2) or remove the reactant (HCl or O2)

7 0

2 years ago

The decomposition of 57.0 g of Fe2O3 results in Consider the following reaction. 2Fe2O3 ---> 4Fe + 3O2 deltaH degree rxn = +

lozanna [386]

Answer:

The correct answer is option E.

Explanation:

$2Fe_2O_3\rightarrow 4Fe + 3O_2 \Delta H^o_{rxn} = 824.2 kJ$

Mass of ferric oxide decomposed = 57.0 g

Moles of ferric oxide decomposed = $\frac{57.0 g}{160 g/mol}=0.35625 mol$

According to reaction, 2 moles ferric oxide on combustion gives 824.2 kJ of heat.

Then heat given by on decomposition of 0.35625 mol of ferric oxide will be:

$\frac{824.2 kJ}{2}\times 0.35625 =146.81 kJ\approx 147 kJ$

So, on decomposition of 57.0 grams of ferric oxide 147 kilo Joules of heat was released.

3 0

3 years ago

What can you conclude from the figure shown?

arlik [135]

Answer:

A. Hund's rule has been violated

Explanation:

There must be one electron with the same spin in each orbital of the same energy before you can put two in the same orbital. In the photo, the 2s sublevel is completely filled before the 1s sublevel (if anything the 1s should have an up spin and down spin, with the 2s having one up spin).

6 0

3 years ago

What causes heat energy when you rub two objects against each other? (2 points)

vodka [1.7K]

<h2>When friction acts between two surfaces that are moving over each other, some kinetic energy is transformed into heat energy. Friction can sometimes be useful.</h2>

<h2>Hope this helps you ❤️</h2>

<h2>Mark me as brainliest ❤️</h2>

8 0

3 years ago

A chemist prepared a solution of NaOH by completely dissolving 55.90 grams of solid NaOH in 3.600 liters of water at room temper

kati45 [8]

Answer:

13.59

Explanation:

Step 1:

We'll begin by writing out the data from the question.

Mass of NaOH = 55.90g

Volume = 3.6 L

pH =?

Step 2:

Determination of the number of mole NaOH.

Mass of NaOH = 55.90g

Molar Mass of NaOH = 23 + 16 +1 = 40g/mol

Number of mole = Mass/Molar Mass

Number of mole of NaOH = 55.90/40

Number of mole of NaOH = 1.3975 mole

Step 3:

Determination of the molarity of NaOH.

Molarity = mole /Volume

Mole of NaOH = 1.3975 mole

Volume = 3.6 L

Molarity of NaOH = 1.3975/3.6

Molarity of NaOH = 0.388 M

Step 4:

Determination of the concentration of OH- in 0.388 M NaOH

In solution, NaOH will dissociate as follow:

NaOH —> Na+ + OH-

From the equation above,

1 mole of NaOH produced 1 mole of OH-

Therefore, 0.388 M of NaOH will also produce 0.388 M of OH-

The concentration of OH- is 0.388 M

Step 5:

Determination of the pOH of the solution.

pOH = - Log [OH-]

Concentration of OH-, [OH-] = 0.388 M

pOH = - Log [OH-]

pOH = - Log 0.388

pOH = 0.411

Step 6:

Determination of the pH of the solution.

pH + pOH = 14

pOH = 0.411

pH + 0.411 = 14

pH = 14 - 0.411

pH = 13.589

3 0

3 years ago