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
kolbaska11 [484]
2 years ago
5

CaO(s) + 2 NH4Cl(s) = 2 NH3(g) + H2O(g) + CaCl2(s)

Chemistry
1 answer:
sertanlavr [38]2 years ago
8 0

This is stoichiometry question which involves unit conversions.

Given values:

CaO mass = 11.2g

NH4Cl mass = 22.4g

First convert the two given values to moles.

(11.2g CaO)(1mol CaO / 56.08g CaO) = 0.20mol CaO

(22.4g NH4Cl)(1mol NH4Cl / 53.49g NH4Cl) = 0.42mol NH4Cl

CaO reacts with NH4Cl on a 1:2 ratio.  This means that the reactants will react in this ratio: 0.20mol CaO: 0.40mol NH4Cl.  There will be an excess of 0.02mol NH4Cl unreacted because CaO is the limiting reagent (CaO is used up completely in the reaction and excess NH4Cl remains unreacted).

Now given the equation:

CaO(s) + 2 NH4Cl(s) = 2 NH3(g) + H2O(g) + CaCl2(s)

It is seen that every 2mol of NH4Cl reacts to form 2mol of NH3 because all the elements in the composition of NH3 is found in NH4Cl.  This means that NH4Cl and NH3 are on a 1:1 reaction ratio.  Now we use this relationship:

0.40mol NH4Cl reacted : 0.40mol NH3 produced.  Convert NH3 produced to grams to find solution:

(0.40mol NH3)(17.03g NH3 / 1mol NH3) = 6.8g NH3 produced a)


We determined the excess reactant as 0.02mol NH4Cl in a).  Now we convert it to grams:

(0.02mol NH4Cl)(53.49g NH4Cl / 1mol NH4Cl) = 1.07g NH4Cl unreacted b)



You might be interested in
What is the formula of sulfurous acid?<br> H2S<br> HSO4<br> H2SO4<br> H2SO3
Bas_tet [7]

The correct answer is H2SO3 I took the assignment already


6 0
3 years ago
Given the balanced equation representing a reaction: 2na(s) + cl2(g) → 2nacl(s) + energy if 46 grams of na and 71 grams of cl2 r
igor_vitrenko [27]
Answer is: 2) 117g.
2Na + Cl₂ → 2NaCl
Step 1: calculate amount of substance of sodium and chlorine.
n(Na) = m(Na)÷M(Na) = 46g ÷ 23 g/mol = 2 mol.
n(Cl₂) = m(Cl₂)÷M(Cl₂) = 71g ÷ 71 g/mol = 1 mol.
Step 2: calculate amount of substance and mass of sodium-chloride.
Because both sodium and chlorine react completely, we can use both n to compare with n of NaCl.
n(Na) : n(NaCl) = 2:2, 2 mol : n(NaCl) = 2:2
n(NaCl) = 2mol, m(NaCl) = 2mol ·5805 g/mol = 117 g.

6 0
3 years ago
The correct name for hno2 is ________. nitrous acid hyponitrous acid nitric acid pernitric acid hydrogen nitrate
balu736 [363]
Nitrous Acid.

Hyponitrous acid: H2N2O2

Nitric acid: HNO3

Pernitric acid: HNO


4 0
2 years ago
What is natural selection help plz help
Mars2501 [29]

Answer:

Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

Explanation:

Hope this helps! Please consider marking brainliest! I hope you have an amazing day. Always remember, your smart and you got this! -Alycia :)

6 0
2 years ago
Read 2 more answers
A scientist dissolves 10 g of NaOH into 0.275 L of water. What is the
Damm [24]
The answer is 0.9091 M
5 0
3 years ago
Other questions:
  • a chemist needs to make 1000mL of a 30% alcohol solution by mixing 25% and 55% solution. How much of each should she use?
    15·1 answer
  • What mass (in g) of NH3 must be dissolved in 475 g of methanol to make a 0.250 m solution?
    7·1 answer
  • Initially, scientists described atoms as the smallest particles of matter. However smaller particles within atoms were
    10·1 answer
  • HURRY PLS HELP PLEASE: A 40.0-L sample of fluorine is heated from 363 Kelvin to 459 K. What volume will the sample occupy at the
    5·1 answer
  • Can you help me pleas I don't know the answer
    8·2 answers
  • What are specatator ions
    9·1 answer
  • Who much the velocity of a body when it travels 600m in 5 min​
    13·1 answer
  • List 10 uses of composite​
    8·1 answer
  • What is the frequency of light?<br>( I just want to confirm )​
    7·2 answers
  • Solve the science problem <br><br> No spamming
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!