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4 years ago

To which family on the Periodic Table does this Bohr Model belong?

Chemistry

1 answer:

Nata [24]4 years ago

6 0

Answer:

As the valance shell have 7 valance electrons .

It belongs to halogen family (group 17).

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A certain metal M forms a soluble sulfate salt M2SO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 5

quester [9]

Answer:

Explanation:

For a certain metal M by which the electrodes and the solution M_2SO_4 the cell notation is:

SALT BRIDGE

ANODE ↓ CATHODE

$M(s)|M_2SO_4_{(aq)} (50.0 \ mM)\Big {|} \Big {|} M_2SO_4_{(aq)} (5.00 \ M ) |M(s)$

Since the standard electrode potential is less positive on the left side, a negative anode electrode is used, and oxidation occurs at the anode.

$i.e \ \ M(s) \to M^{2+} _{(aq)} + 2 e^- \ \ \ (oxidation)$

The right side of the cell cathode is placed which is positive in sign and aids in reduction since the normal reduction potential is less negative.

$i.e \ \ M^{2+} _{(aq)} + 2 e^- \to M(s) \ \ \ (reduction)$

As a result, the correct answer for the positive electrode is the right side.

$M_2SO_4 \to M^{2+} + SO_4^{2-}$

Using Nernst Equation:

$E_{cell} = - \dfrac{RT}{nF }log ( \dfrac{reduction \ half }{oxidation \ half})$

$E_{cell} = - \dfrac{2.303 \times 8.314 \times 293}{2 \times 96485 }log ( \dfrac{5.0 0 }{50 \times 10^{-3}})$

$E_{cell} = -0.058 \ V$

5 0

3 years ago

Answer the following questions:

Vera_Pavlovna [14]

Answer:

fdfdgiukjgrguhjnfvthhhdqddwsvhjjj

4 0

3 years ago

Read 2 more answers

Questions below :) These ones are fairly easy :P

goldfiish [28.3K]

Answer:

See below.

Explanation:

1. The water here is the solvent, and the 'sugar and fruit specific chemicals' are considered the solute. That is as the solute is the component dissolved in the solvent.

2. The collision theory states that the greater the collisions, the greater the rate of reaction. When powdered sugar is placed in the water (solvent) it occupies more surface area, resulting in more collisions that speed up the rate of reaction, compared to a cube of sugar - that occupies less surface area. Therefore, the powdered sugar dissolved faster.

3. Molarity describes the number of moles of a substance per unit of volume. The standard unit of volume is liter, giving you the standard units (mol/l). Molality describes the number of moles per unit of mass, typically kilograms (mol/kg).

The concentration of a solution can be given in moles of solute dissolved per kilogram of solvent for molality, and moles of solute dissolved in liters of solvent for molarity. Molality is generally used for concentration.

5 0

4 years ago

An aqueous solution of perchloric acid is standardized by titration with a 0.191 M solution of barium hydroxide. If 13.8 mL of b

WARRIOR [948]

Answer:

Molarity of $HClO_{4}$ solution is 0.311 M