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
choli [55]
3 years ago
14

Please write balanced equations for these reactions! WILL GIVE BRAINLIEST! 50 POINTS

Chemistry
1 answer:
Romashka [77]3 years ago
3 0

Answer:

(NH4)2S(aq) + Pb(NO3)2(aq) --> 2NH4NO3 (aq) + PbS (s)

You might be interested in
You are given an unknown mixture containing NaCl and NaHCO3. When you carry out the heating exactly as described in part A, only
SOVA2 [1]

Answer:

1.52g NaHCO3 were in the original mixture.

Mass percent: 64.1%

Explanation:

When NaHCO3 heats it descomposition occurs as follows:

2 NaHCO3(s) → Na2CO3(s) + CO2(g) + H2O(g).

The loss in mass is because of the evaporization of CO2 and H2O. As both are in the same porportion, its molar mass is the sum of both compounds (44g/mol + 18g/mol = 62g/mol)

Loss in mass: 74.80g - 74.24g = 0.56g.

In moles:

0.56g * (1mol / 62g) = 0.00903 moles of gas.

As 1 mole of the gases comes from 2 moles of NaHCO3:

<em>Moles NaHCO3:</em>

0.00903 moles of gas * (2 moles NaHCO3 / 1 mole gas) = 0.018 moles NaHCO3.

In grams (Molar mass NaHCO3: 84g/mol):

0.018 moles NaHCO3 * (84g / mol) = 1.52g NaHCO3 were in the original mixture.

The mass of the mixture was:

74.80g - 72.428g = 2.372g

That means mass percent of NaHCO3 is:

(1.52g /  2.372g) * 100 =  64.1%

7 0
3 years ago
Which type of chemistry studies the chemical reactions that occur in the human body?
vladimir1956 [14]

Answer:

Which type of chemistry studies the chemical reactions that occur in the human body? .

biochemistry

4 0
2 years ago
The equation 2C3H7OH + 9O2 yield 6 CO2 + 8H2O is an example of what type of reaction
Furkat [3]
Combustion reaction
3 0
2 years ago
Read 2 more answers
Solve pls brainliest
sammy [17]

Answer:

Even though the two substances possess many similarities, they have some unique properties. In turn, since they have the same properties, if they were the same substance, it would make matters worse, if the same chemical was in two different places, there would not be a difference between them since they are the same, just as it is with are two different chemicals would have differing properties since they are two properties would vary from one another since they are 2 totally different things!

4 0
2 years ago
Need help fast please I am timed and giving 47 points.
Leokris [45]

Answer:

C

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Jose’ has a circular rug on the floor of his bedroom. If the area of the rug is 16π square feet, what is the diameter of the rug
    14·1 answer
  • Which is true of a mechanical wave? (Hurry up please, do quick)
    11·1 answer
  • Why does earth’s rotation axis lean toward the sun for only one-half of its orbit?
    9·1 answer
  • How are scientist able to protect people from tornadoes
    12·1 answer
  • Which statement about the central nervous system (CNS) and the peripheral nervous system (PNS) is true?
    7·2 answers
  • Answer to this question?
    14·2 answers
  • I need help please!!!!!!
    9·1 answer
  • Is density qualitative or quantitative poetry?
    15·2 answers
  • A(n) _____, used as part of the stationary phase, has an affinity for the solvent and the chemical components of the mixture. ad
    13·1 answer
  • You are given 2 samples of different elements. One is a perfect cube and the other is an
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!