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
muminat
3 years ago
15

Consider the balanced equation. 2HCl + Mg MgCl2 + H2 If 40.0 g of HCl react with an excess of magnesium metal, what is the theor

etical yield of hydrogen?
Chemistry
2 answers:
Romashka-Z-Leto [24]3 years ago
8 0

Answer:

1.11

Explanation:

cuz i got it right

Serga [27]3 years ago
7 0

Answer:

Theoretical yield of hydrogen is 1.11 g

Explanation:

Balanced equation, Mg+2HCl\rightarrow MgCl_{2}+H_{2}

As Mg remain present in excess therefore HCl is the limiting reagent.

According to balanced equation, 2 moles of HCl produce 1 mol of H_{2}.

Molar mass of HCl = 36.46 g/mol

So, 40.0 g of HCl = \frac{40.0}{36.46}moles of HCl = 1.10 moles of HCl

Hence, theoretically, number of moles of H_{2} are produced from 1.10 moles of HCl = (\frac{1}{2}\times 1.10)moles=0.550moles

Molar mass of H_{2} = 2.016 g/mol

So, theoretical yield of H_{2} = (0.550\times 2.016)g=1.11g

You might be interested in
Balance this equation. If a coefficient of "1" is required, choose "blank" for that box. CO + O2 → CO2
liberstina [14]

Answer:

2co + o2 > 2co2

Explanation:

so that is tye answer

3 0
3 years ago
Read 2 more answers
1 Ammonia, NH3, reacts with incredibly strong bases to produce the amide ion, NH2 -. Ammonia can also react with acids to produc
Charra [1.4K]

Answer:

a) ammonium ion

b) amide ion

Explanation:

The order of decreasing bond angles of the three nitrogen species; ammonium ion, ammonia and amide ion is NH4+ >NH3> NH2-. Next we need to rationalize this order of decreasing bond angles from the valence shell electron pair repulsion (VSEPR) theory perspective.

First we must realize that all three nitrogen species contain a central sp3 hybridized carbon atom. This means that a tetrahedral geometry is ideally expected. Recall that the presence of lone pairs distorts molecular structures from the expected geometry based on VSEPR theory.

The amide ion contains two lone pairs of electrons. Remember that the presence of lone pairs causes greater repulsion than bond pairs on the outermost shell of the central atom. Hence, the amide ion has the least H-N-H bond angle of about 105°.

The ammonia molecule contains one lone pair, the repulsion caused by one lone pair is definitely bless than that caused by two lone pairs of electrons hence the bond angle of the H-N-H bond in ammonia is 107°.

The ammonium ion contains four bond pairs and no lone pair of electrons on the outermost nitrogen atom. Hence we expect a perfect tetrahedron with bond angle of 109°.

5 0
3 years ago
Explain why biodiversity in an ecosystem is important.
WINSTONCH [101]
It reduces the chance of an extinction given a natural disaster. If there is more diversity and lets say a wildfire happens, more species would survive the event to repopulate the area
8 0
3 years ago
Which solid from the data table would float on water?
puteri [66]

Answer:

Ther answerr is A only solid A.

Explanation:

The density of water is 1 g/cm3 so anything above that will sink,  but as you can see solid A dosnt ev en reach one./ so It will float on water. the other two are over 1 g/cm3.

<h2>If this answer helped mark it brainliest. :)</h2>

5 0
3 years ago
Which of the following would correctly be termed "miscible"? sugar in water alcohol in water oil in water salt in oil
beks73 [17]
Alcohol in water is correctly termed "miscible". The equivalent answer is B.
If this has helped you, consider my answer to become the Brainliest!
4 0
2 years ago
Read 2 more answers
Other questions:
  • Which of the following are examples of plasmas? Answers are numbered
    5·1 answer
  • the valence electrons of an atom of which element would feel a smaller effective nuclear charge than the valence electrons of a
    5·1 answer
  • If you use 19 mL of 0.100 M KMnO4, how many moles have you used? The answer has to be in four decimal places (do not forget the
    14·1 answer
  • The double covalent bond within unsaturated hydrocarbons_____. are very strong are easily broken are saturated contain oxygen
    7·2 answers
  • A 19.45 gram sample of copper is heated in the presence of excess iodine. A metal iodide is formed with a mass of 58.30 g. Deter
    10·1 answer
  • C time
    13·1 answer
  • Please help!! Why is the following Electron Configuration incorrect for Aluminium?
    15·1 answer
  • The Atomic mass if hydrogen us 1.008 amu. The reason that this value is not a whole number is that
    5·1 answer
  • Why do higher trophic levels is most ecosystem contain fewer organisms than lower trophic levels
    15·1 answer
  • Please help me i need this asp
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!