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3 years ago

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In a reversible reaction, two substances are in equilibrium if the concentration of each increases by the same amount but the eq

uilibrium constant remains unaffected. Please select the best answer from the choices provided
a. True
b. False

1 answer:

Gelneren [198K]3 years ago

8 0

Dasdasdas das dadsa das das das d

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Does anyone know the answer to this chemistry question?!? How much HCl is made when 2g of hydrogen reacts? H2+Cl2->2HCl

jonny [76]

<h3>Answer:</h3>

72.19 g HCl

<h3>Explanation:</h3>

We are given the reaction between hydrogen gas and chlorine gas as;

H₂(g) + Cl₂(g) → 2HCl(g)

Mass of hydrogen gas that reacts is 2 g

We are required to determine the amount of HCl produced

<h3>Step 1: Determine the number of moles of H₂ used </h3>

Moles = Mass ÷ molar mass

Molar mass of Hydrogen gas = 2.02 g/mol

Thus;

Moles = 2 g ÷ 2.02 g/mol

= 0.99 moles

<h3>Step 2: Moles of HCl produced </h3>

From the reaction equation, 1 mole of hydrogen gas reacts to produce 2 moles of HCl

Therefore, the mole ratio of H₂ : HCl = 1 : 2

Thus, moles of HCl = 0.99 moles × 2

= 1.98 moles

<h3>Step 3: Mass of HCl produced </h3>

To calculate mass we multiply the number of moles by molar mass

Molar mass of HCl =36.46 g/mol

Therefore;

Mass of HCl = 36.46 g/mol × 1.98 moles

= 72.19 g

Thus, the amount of HCl produced during the reaction is 72.19 g

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3 years ago

How many formula units make up 12.8 g of magnesium chloride ( MgCl2)? Express the number of formula units numerically.

Advocard [28]

Answer:

For 12.8 g there 0.807 × 10³ formula units.

Explanation:

Given data:

Mass of MgCl₂ = 12.8 g

Formula units for given mass = ?

Solution:

First of all we will calculate the number of moles.

Number of moles = mass/molar masss

Number of moles = 12.8 g/ 95.211 g/mol

Number of moles = 0.134 mol

According to the Avogadro number,

one moles = 6.022 × 10³ formula units

For 0.134 mol,

0.134 × 6.022 × 10³ formula units

0.807 × 10³ formula units

For 12.8 g there 0.807 × 10³ formula units.

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Why do some objects float, while others sink?

Maru [420]

density plays a part in why some things float and some things sink objects that are more dense than water sink and those Less dense floats

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Using this formula, to find K, what does E0 represent?. . K=10^(nE0/0.0592)

Nadusha1986 [10]

E0,correctly written as E $E^{o}$ , is the <span> standard electrode potential of the cell. This is usually used in the subject, electrochemistry. This is used to measure the difference in potential between two half cells used in an electrochemical cell. The o above signifies that it is at its standard state. </span>

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Which type of bond is found between atoms of solid cobalt?

Tamiku [17]

Metallic bond is found between atoms of solid cobalt so the answer is (3) metallic :))))
i hope this be helpful

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