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3 years ago

Here is my question only answer if you understand this question

Chemistry

1 answer:

sasho [114]3 years ago

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How many moles of nitrogen gas are present in a 28.9 dm3 temperature of 55.0 °C and a pressure of 144 kPa?

jeka57 [31]

Given :

Temperature, T = 55° C = ( 55 + 273 ) K = 328 K .

Volume of container, V = 28.9 dm³ = 0.0289 m³ .

Pressure, P = 144 kPa = 144000 Pa .

To Find :

Number of moles of nitrogen gas.

Solution :

We know, by ideal gas equation :

PV = nRT ( R ( universal gas constant ) = 8.31 J K⁻¹ mol⁻¹ .

$n = \dfrac{PV}{RT}\\\\n = \dfrac{144000\times 0.0289}{8.31 \times 328} \ moles\\\\n = \dfrac{4161.6}{2725.68}\\\\n = 1.53 \ moles$

Therefore, number of moles of nitrogen gas is 1.53 moles.

8 0

3 years ago

What is the si unit for the quantity of particles in a sample?

kaheart [24]

The SI unit for the amount or quantity of small particles in a sample is referred to as the mole.

This tells how much in terms of atoms or molecules are present for a particular mass.

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3 years ago

What leads to the formation of an ionic bond with Hg2+?

statuscvo [17]

The attraction of an $SO_4^{2-}$ ion leads to the formation of an ionic bond with $Hg^{2+}$

<h3>What is an ionic bond?</h3>

Ionic bond, also called an electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.

Since the question asking among all these options:

(a) The attraction of a noble gas

(b) The attraction of a $NH^{4+}$ ion

(d) The attraction of a $SO_4^{2-}$ ion

An ionic bond can be formed after two or more atoms lose or gain electrons to form an ion. Ionic bonds occur between metals, losing electrons, and nonmetals, gaining electrons.

Hence, option D is correct.

Learn more about the ionic bond here:

brainly.com/question/11527546

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2 years ago

Hydrogen bonding occurs in molecules when a _____________. (1 point)

Burka [1]

Answer: hydrogen atom of a polarized molecule bonds with an electro negative atom.

Explanation:

Hydrogen bonds are special type of dipole dipole forces which are formed when hydrogen bonds with an electro negative element. Hydrogen bonds are strongest type of bonds .Example: Bond between Oxygen of one water molecule to the hydrogen of another water molecule as shown in the image below.

Covalent bonds are formed by sharing of electrons among non metals.

Ionic bond is formed by transfer of electrons between metals and non metals.

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3 years ago

Does a mole of hydrogen have the same mass as a mole of oxygen? explain your answer

BartSMP [9]

Noah mall of hydrogen does not the see math as a more with oxygen because hydrogen is more strong and powerful than oxygen oxygen can increase the rating of the volume

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3 years ago

Here is my question only answer if you understand this question​

Here is my question only answer if you understand this question