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3 years ago

60. Which of the following compounds would you expect to be ionic?

Chemistry

1 answer:

liubo4ka [24]3 years ago

8 0

<h3>Answer:</h3>

CaO

<h3>Explanation:</h3>

An ionic compound is formed from a metallic atom and non-metallic atom.
Ionic compound results from an ionic bond between a non-metal atom and a metal atom.
Ionic bond occurs when a metallic atom loses an electron(s) to form a cation and a non-metallic atom gains electron(s) to form an anion.
The electrostatic attraction between the negatively charged ion and the positively charged ion creates an ionic bond, thus, resulting in the formation of an ionic compound.
In this case, calcium oxide is an example of an ionic compound.
Calcium atom loses two electrons to form positively charged calcium ion while the oxygen atom gains two electrons to form a negatively charged oxygen ion.
Calcium ion and oxygen ion form an ionic bond thus resulting in the formation of an ionic compound.

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ipn [44]

Explanation:

YES

K2SO4(aq) + Ba(NO3)2(aq) --> Ba(SO4)2(s) + 2KNO3(aq)

Net ionic equation

2SO4^2-(aq) + Ba2+(aq) --> Ba(SO4)2(s)

No precipitate is formed because KNO3, MgSO4, K2SO4 and Mg(NO3)2 all are soluble.

YES

BaCl2(aq) + Na2(SO4)(aq) --> BaSO4(s) + 2NaCl(aq)

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Ba2+(aq) + SO4^2-(aq) --> BaSO4(aq)

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3 years ago

Suppose two 200.0-L tanks are to be filled separately with the gases helium and hydrogen. What mass of each gas is needed to pro

Aneli [31]

Answer:

Mass of helium = 4426.9524 g

Mass of hydrogen gas = 2213.4762 g

Explanation:

Pressure = 135 atm

Temperature = 24 °C

Volume = 200 L

Number of moles = ?

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15

So,

T₁ = (24 + 273.15) K = 297.15 K

Using ideal gas equation as:

PV=nRT

where,

P is the pressure

V is the volume

n is the number of moles

T is the temperature

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the equation as:

135 atm × 200 L = n × 0.0821 L.atm/K.mol × 297.15 K

⇒n = 1106.7381 moles

<u>For helium gas:</u>

Molar mass = 4 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$1106.7381= \frac{Mass}{4}$

$Mass= 4426.9524\ g$

<u>For hydrogen gas:</u>

Molar mass = 2 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$1106.7381= \frac{Mass}{2}$

$Mass= 2213.4762\ g$

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Which process is most responsible for leaving salt molecules in ocean water?

Elenna [48]

Desalination is a process that takes away mineral components from saline water.

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PolarNik [594]

Answer:

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vladimir1956 [14]

Answer:

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Explanation:

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