1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
laiz [17]
2 years ago
8

Mg + 2HCl → MgCl2 + H2

Chemistry
2 answers:
aivan3 [116]2 years ago
8 0

mol Mg = 4 : 24 g/mol = 0.16

mol HCl = 3.2 : 36.5 g/mol = 0.088

mol: coefficient

Mg = 0.16 : 1 = 0.16

HCl = 0.088 : 2 = 0.044

HCl smaller ratio ⇒ the limiting reactant

deff fn [24]2 years ago
7 0

Answer:

Explanation:

This is a limiting reactant problem.

Mg(s)

+

2HCl(aq)

→

MgCl

2

(

aq

)

+ H

2

(

g

)

Determine Moles of Magnesium

Divide the given mass of magnesium by its molar mass (atomic weight on periodic table in g/mol).

4.86

g Mg

×

1

mol Mg

24.3050

g Mg

=

0.200 mol Mg

Determine Moles of 2M Hydrochloric Acid

Convert

100 cm

3

to

100 mL

and then to

0.1 L

.

1 dm

3

=

1 L

Convert

2.00 mol/dm

3

to

2.00 mol/L

Multiply

0.1

L

times

2.00 mol/L

.

100

cm

3

×

1

mL

1

cm

3

×

1

L

1000

mL

=

0.1 L HCl

2.00 mol/dm

3

=

2.00 mol/L

0.1

L

×

2.00

mol

1

L

=

0.200 mol HCl

Multiply the moles of each reactant times the appropriate mole ratio from the balanced equation. Then multiply times the molar mass of hydrogen gas,

2.01588 g/mol

0.200

mol Mg

×

1

mol H

2

1

mol Mg

×

2.01588

g H

2

1

mol H

2

=

0.403 g H

2

0.200

mol HCl

×

1

mol H

2

2

mol HCl

×

2.01588

g H

2

1

mol H

2

=

0.202 g H

2

The limiting reactant is

HCl

, which will produce

0.202 g H

2

under the stated conditions.

pls mark as brainliest ans

You might be interested in
Which rock is an example of a clastic sedimentary rock?
Anton [14]
The correct answer is Shale
8 0
3 years ago
Read 2 more answers
PLEASE HELP
Ipatiy [6.2K]

Your answer should be “C.”

MARK ME BRAINLIEST PLEASE!!!!!!

6 0
3 years ago
Read 2 more answers
An electrical device that slows the flow of charge in a circuit
11Alexandr11 [23.1K]
RESISTOR!!!!!!!!!!!!!!!
7 0
3 years ago
Read 2 more answers
The only way animals can get energy is by<br> eating what three nutrients?
kogti [31]

Most animals obtain their nutrients by the consumption of other organisms. At the cellular level, the biological molecules necessary for animal function are amino acids, lipid molecules, nucleotides, and simple sugars. However, the food consumed consists of protein, fat, and complex carbohydrates.

7 0
2 years ago
Read 2 more answers
Which statement below about contrasting Hb and Mb is FALSE?
olchik [2.2K]

Answer:

C. Hb binds O2 more tightly than Mb.

Explanation:

<u>Hb and Mb are both oxygen carrier protiens which contain the heme group. Hb has 4 heme units in 1 moleucle which work via coperative effect. On the other hand, Mb has only one heme unit. </u>

<u>From above theory, statement A and B are correct.</u>

<u>Although the heme group of the Mb is identical to those of Hb, Mb has a higher affinity for carrying oxygen than hemoglobin.</u>

<u>Hence, Statement C is wrong.</u>

Thats why the function of hemoglobin is to transport oxygen and that of myoglobin is to store oxygen.

<u>When a curve is plotted between oxygen accepted and the pressure of the oxygen, Hb shows sigmoidal, whereas Mb shows hyperbolic oxygen saturation curves.</u><u> The statement D is correct.</u>

<u>Bohr effect and various factors decribe the statement : Hb-oxygen binding is dependent on physiological changes in pH, whereas Mb-oxygen binding is not. </u><u>The  statement E is also correct.</u>

7 0
2 years ago
Other questions:
  • Order the relative rate of diffusion of the following gases from slowest to fastest. Kr, N, Ar, Ne.
    7·2 answers
  • Power is measured in which unit?
    13·1 answer
  • You are following a recipe that calls for 1 egg and 1/3 cup of oil for every cup of flour. In the refrigerator you find only 4 e
    7·1 answer
  • Answer the questions for the following reaction at chemical equilibrium: Cl2(g) + KBr(aq) &lt;----&gt; KCl(aq) + Br2(l) + heat 1
    13·2 answers
  • Could the other molecules in this simulation (argon, oxygen, and water) be considered pure substances? Explain your thinking.
    14·1 answer
  • if a cube of butter is heated sot that it becomes softer and drips out of the container ,it is an example of which change in sta
    13·2 answers
  • Is a transformer used to convert mechanical energy to electric energy
    8·1 answer
  • Which profession involves the study and
    12·1 answer
  • What is the result of 2.58×0.12, including correct significant figures? Select the correct answer below: 0.3096 0.31 0.310 0.3
    5·2 answers
  • What is the mass of 9.4 moles of B2(Cr207)3?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!