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4 years ago

Which of the following is a product formed when K reacts with Cl2?

Chemistry

2 answers:

Lera25 [3.4K]4 years ago

6 0

Answer: KCl

Explanation: Potassium [K] has an atomic no of 19 and the electronic configuration is:

$K :1s^22s^22p^63s^23p^64s^1$ tends to get stable by losing one electron and forming $K^+$

Chlorine [Cl] has atomic no of 17 and thus the electronic configuration is :

$Cl :1s^22s^22p^63s^23p^5$ tends to get stable by gaining one electron and forming $Cl^-$

$K^+$ and $Cl^-$ attract each other and form an ionic bond. As we have a chlorine molecule that is two atoms of chlorine are present, 2 atoms of potassium will react to form 2 moles of KCl.

$2K+Cl_2\rightarrow 2KCl$

Stels [109]4 years ago

3 0

The answer is A.
Which is... KCI

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Why does determining volume work only for a regular shaped object

Kitty [74]

Answer:

Because only regular-shaped objects have a consistent length, width, height, and shape.

Explanation:

Because only regular-shaped objects have a consistent length, width, height, and shape. When dealing with an object composed of differing shapes, your must calculate each portion separately and then add them.

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3 years ago

A 41.1 g sample of solid CO2 (dry ice) is added to a container at a temperature of 100 K with a volume of 3.4 L. If the containe

Morgarella [4.7K]

Answer:

The pressure inside the container is 6.7 atm

Explanation:

We have the ideal gas equation: P x V = n x R x T

whereas, P (pressure, atm), V (volume, L), n (mole, mol), R (ideal gas constant, 0.082), T (temperature, Kelvin)

Since the container is evacuated and then sealed, the volume of the body of gas is the volume of the container.

So we can calculate the pressure by

P = n x R x T / V

where as,

n = 41.1 g / 44 g/mol = 0.934 mol

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3 0

3 years ago

What is the total pressure exerted by the mixture of gases only products or products + reactants?

dedylja [7]

Total = products + reactants

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3 years ago

A covalent chemical bond is one in which:_____.a) outer-shell electrons of one atom are transferred to the inner electron shells

Aleks04 [339]

Answer:

A.outer-shell electrons of one atom are transferred to the inner electron shells of another atom.

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4 years ago

A pharmacy intern is asked to prepare 3 L of a 30% w/v solution. T he pharmacy stocks the active ingredient in 8-ounce bottles o

MariettaO [177]

Answer: The number of bottles that will be needed are 6

Explanation:

We are given:

Amount of solution, the intern is asked to prepare = 3 L = 3000 mL (Conversion factor: 1 L = 1000 mL)

Strength of solution needed = 30 % (w/v)

This means that in 100 mL of solution, the solute present is 30 grams

So, in 3000 mL of solution, the solute present will be = $\frac{30}{100}\times 3000=900g$

Active ingredient present in 1 bottle = 8 ounce of 70 % (w/v)

Conversion factor used: 1 ounce = 29.57 mL

So, $8ounce\times \frac{29.57mL}{1ounce}=236.6mL$

Amount of active ingredient present in 1 bottle = $236.6\times \frac{70}{100}=165.6g$

To calculate the number of bottles, we need to divide the total amount of solution needed by the amount of active ingredient present in 1 bottle, we get:

$\text{Number of bottles}=\frac{\text{Amount of solution to prepare}}{\text{Amount of active ingredient in 1 bottle}}$

Putting values in above equation, we get:

$\text{Number of bottles}=\frac{900g}{165.6g}\\\\\text{Number of bottles}=5.43\approx 6$

Hence, the number of bottles that will be needed are 6

6 0

3 years ago