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
Olenka [21]
2 years ago
7

1. Determine los gramos obtenidos de hidróxido de calcio [Ca(OH)2], al reaccionar 12 g de óxido de calcio (CaO) con agua.

Chemistry
1 answer:
Maru [420]2 years ago
5 0

Answer:

15,86 g Ca(OH)₂ ≅ 16 g

Explanation:

La ecuación química balanceada para la reacción entre el óxido de calcio (CaO) y el agua (H₂O) para formar hidróxido de calcio (Ca(OH)₂) es la siguiente:

CaO(s) + H₂O(l) → Ca(OH)₂(ac)

De acuerdo a esta ecuación, 1 mol de Ca(OH)₂ es producida a partir de 1 mol de CaO. Convertimos las moles a gramos utilizando la masa molecular (MM) de cada compuesto:

MM(CaO)= 40 g/mol Ca + 16 g/mol O = 56 g/mol

⇒ 1 mol CaO x 56 g/mol CaO = 56 g CaO

MM(Ca(OH)₂) = 40 g/mol Ca + (2 x 16 g/mol O) + (2 x 1 g/mol H) = 74 g/mol

⇒ 1 mol Ca(OH)₂ x 74 g/mol Ca(OH)₂ = 74 g Ca(OH)₂

Por lo tanto, la relación estequiometrica es:

1 mol Ca(OH)₂/1 mol CaO = 74 g Ca(OH)₂/56 g CaO

Multiplicando la relación estequiométrica por la masa real de CaO (12 g), obtenemos los gramos obtenidos de Ca(OH)₂:

12 g CaO x 74 g Ca(OH)₂/56 g CaO = 15,86 g Ca(OH)₂

You might be interested in
can someone explain how this is wrong? I don’t think it is wrong but my chem teacher deducted points. so why?
ruslelena [56]

Answer: measure the mass (48.425g) of KCl

Explanation:

To prepare the solution 0.65M KCl we must measure the mass of KCl that would be dissolved in 1L of the solution. This can be achieved by:

Molar Mass of KCl = 39 + 35.5 = 74.5g/mol

Number of mole (n) = 0.65

Mass conc of KCl = n x molar Mass

Mass conc of KCl = 0.65 x 74.5 = 48.425g

Therefore, to make 0.65M KCl, we must measure 48.425g

7 0
3 years ago
what do Mars, Mercury, and Venus have in common? A. They have a gas surface composition and a thick atmosphere. b They have many
mario62 [17]

Answer:

the best guess would have to be C

3 0
2 years ago
Which of the following information is necessary to describe an object's motion?
Zepler [3.9K]

Answer: The correct option is B.

Explanation: To describe the motion of an object, we use the equations of motion.

  1. v=u+at
  2. s=ut+\frac{1}{2}at^2
  3. 2as=v^2-u^2

From the above equations, we require position, speed and direction through which we an calculate the displacement, velocity and acceleration.

To calculate the complete motion of an object, we require all the three factors.

Hence, the correct option is B.

8 0
2 years ago
Read 2 more answers
Major species present when fructose is dissolved in water
Katyanochek1 [597]
The fructose chemical formula is C6H12O6. The answer to the question above regarding the major species present when fructose is dissolved in water (H2O) is "None". No ions are present. It is false that when sugar is dissolved in water there will be strong electrolytes.
7 0
3 years ago
Read 2 more answers
Enter your answer in the provided box. Calcium hydroxide may be used to neutralize (completely react with) aqueous hydrochloric
NNADVOKAT [17]

Answer:

49.95 g of HCl

Explanation:

Let's formulate the chemical equation involved in the process:

Ca(OH)2 + 2 HCl → CaCl2 + 2 H2O

This means that we need 1 mole of Calcium hydroxide to neutralize 2 moles of hydrochloric acid. From this, we calculate the quantity of HCl moles that would be neutralized by 0.685 moles of Ca(OH)2

1 mole Ca(OH)2 ---- 2 moles HCl

0.685 moles Ca(OH)2 ---- x = 1.37 moles HCl

Now that we know the quantity of HCl moles that would react, let's calculate the quantity of grams this moles represent:

1 mole of HCl ---- 36.46094 g

1.37 moles ------ x = 49.95 g of HCl

3 0
3 years ago
Other questions:
  • For production of crude biodiesel from 250,000 kg/h rapeseed oil reacted with 75,000 kg/h ethanol and 250 kg/h potassium hydroxi
    9·1 answer
  • Which of the following is an example of a homogeneous mixture?
    7·2 answers
  • WILL MARK BRAINLIEST! ANSWER QUICKLY!!!!
    13·2 answers
  • The test tube that contained the calcium metal was probably the most difficult of the test tubes to clean. Why was aqueous HCl u
    13·1 answer
  • Chlorofluorocarbons such as CCl2F and CCI,F, have been linked to ozone depletion in Antarctica. In 1994, these gases were found
    6·1 answer
  • How the hydrosphere and biosphere interact in this swamp?
    7·1 answer
  • What is non lustrous ?
    5·2 answers
  • Which statement best explains why an object appears green in sunlight?
    10·1 answer
  • Choose all the answers that apply.
    6·2 answers
  • What would be the mass, in grams, of 2.408 x 1024 molecules of tetraphosphorus decaoxide?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!