You are performing a reaction involving the collection of a gas at SATP. If 5.00 g of magnesium is added to 100.0 cm3 of 0.100 mol dm−3 HCl, determine the volume of hydrogen gas that will be collected at SATP.

Answers

Answer 1

Answer: The volume of hydrogen produced is 0.122 L

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]

[tex]\text{Moles of solute}={\text{Molarity}}\times {\text{Volume in L}}[/tex]  

[tex]\text{Moles of} Mg=\frac{5.00g}{24g/mol}=0.208moles[/tex]

[tex]\text{Moles of} HCl=[/tex][tex]0.100moldm^{-3}\times 0.1dm^3=0.01mol[/tex]

The balanced chemical equation is:

[tex]Mg+2HCl\rightarrow MgCl_2+H_2[/tex]  

According to stoichiometry :

2 moles of require = 1 mole of

Thus 0.01 moles of [tex]HCl[/tex] will require=[tex]\frac{1}{2}\times 0.01=0.005moles[/tex]  of [tex]Mg[/tex]

Thus is the limiting reagent as it limits the formation of product and is the excess reagent.

As 2 moles of give = 1 mole of

Thus 0.01 moles of [tex]HCl[/tex] give =[tex]\frac{1}{2}\times 0.01=0.005moles[/tex]  of [tex]H_2[/tex]

According to ideal gas equation:

[tex]PV=nRT[/tex]

P = pressure of gas = 1.0 atm  (SATP)

V = Volume of gas = ?  

n = number of moles = 0.005

R = gas constant =[tex]0.0821Latm/Kmol[/tex]

T =temperature =[tex]25^0C=(25+273)K=298K[/tex] (SATP)

[tex]V=\frac{nRT}{P}[/tex]

[tex]V=\frac{0.005mol\times 0.0820 L atm/K mol\times 298K}{1.0atm}=0.122L[/tex]

Thus volume of hydrogen produced is 0.122 L


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Answer:

It helps create saliva.

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It helps maximize physical performance

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Answers

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Look at the picture below. What is the name of the copper salt?

Answers

Answer:

The reaction took place is-

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the copper salt name is copper sulphate!

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Answer:

Here's your answer

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I hope it's helpful for you

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Answer: hewo, there! your answer is Below

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Have a amazing day !!!!

Answer:

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The Texas Hill Country ecosystem supports a variety of organisms. Animals such as owls, coyote, snakes and hawks compete for small animals for food. What might happen if the population of these predators became too large? The predators would share the prey population equally among all of the predator species. The predators would begin to eat plants rather than their usual prey. The predators would have more offspring of great size. The predators would consume the prey population faster than it could be replaced.

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Answer:

please follow me

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Modern periodic table is less defective than Mendeleev's periodic
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Group-C
eley's per
Mention any three characteristics of Mendeleev's periodic table.
Write down the three drawbacks of Mendeleev's periodic table.
Write down three characteristics of Modern periodic table.
Which group of the periodic table does the element ‘A’ belong to
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Element
Electronic configuration
А
2,8,5
B
2,3
C С
2,8,3
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8
What is the valency of chlorine and neon? Why?
2
13
14
15
16
17​

Answers

Fluorine is more reactive than Chlorine because it has a higher electro negativity and chlorine has more electrons which causes it to repel reacting electrons with greater force.

Elements are more reactive as you go down the periodic table because ionization energy decreases down a group which means they can lose electrons more easily, making them more reactive.

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2
The table gives the melting and boiling points of four pure substances, W, X, Y and Z.
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Boiling point in °C
w
-7
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Х
660
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Z
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Use data from the table to answer the questions.
(a) (0) Which substance is a gas at 100°C?
X AW
B X
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DZ
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D A W
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Answers

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(a) W

(b) X

(c) Y

Explanation:

Let's consider the following table with melting and boiling points for 4 substances.

Substance     Melting Point (°C)       Boiling Point (°C)

     W                       -7                                  60

     X                       660                              2500

     Y                        180                               1330

     Z                         115                                445

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(a) Which substance is a gas at 100°C?

At 100 °C, W is above the boiling point

(b) Which substance is a liquid for the largest range of temperature?

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(c) Which substance is liquid at 1000 °C and a gas at 2000°C?​

Y is between the melting and the boiling point at 1000 °C and above the boiling point at 2000 °C.

PLZ HELP ME!! NEED ANSWER ASAP!!! I WILL GIVE BRAINLIST!!!
PLZ ANSWER CORRECTLY.
Picture is below and Thank you
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What happens to red litmus paper when it touches a household cleaner
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Hope I helped!

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Answer:

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Answer:

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Answer:

a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

"chlorine acts as a catalyst promoting the breakdown of ozone"

Explanation:

your welcome!

A substance that increases the rate of a chemical reaction, without having any permanent chemical change
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