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
kvv77 [185]
4 years ago
11

I need HELP!!

Chemistry
2 answers:
alex41 [277]4 years ago
6 0

Answer: Hit not Hard it is Hoc2 (Hydgergon Perocide)

Explanation: Water plus co(g)= HoC2

jok3333 [9.3K]4 years ago
6 0

Answer : The enthalpy change for the reaction is, 269 kJ/mol

Explanation :

The given chemical reaction is:

H_2+CO_2\rightarrow CO+H_2O

As we know that:

The enthalpy change of reaction = E(bonds broken) - E(bonds formed)

\Delta H=[(B.E_{H-H})+(2\times B.E_{C=O})]-[(2\times B.E_{O-H})+(1\times B.E_{C\equiv C})]

Given:

\Delta H = enthalpy change

B.E_{H-H} = 436 kJ/mol

B.E_{O-H} = 463 kJ/mol

B.E_{C=O} = 799 kJ/mol

B.E_{C\equiv C}  = 839 kJ/mol

Now put all the given values in the above expression, we get:

\Delta H=[(436kJ/mol)+(2\times 799kJ/mol)]-[(2\times 463kJ/mol)+(1\times 839kJ/mol)]

\Delta H=269kJ/mol

Therefore, the enthalpy change for the reaction is, 269 kJ/mol

You might be interested in
An atom has three full orbitals in its second energy level.
ICE Princess25 [194]
Orbitals am only hold two electrons each, so 3 orbitals can hold 6 electrons
7 0
3 years ago
Read 2 more answers
Summary of the periodic table
JulsSmile [24]
The periodic table to chart which arranges all of the unknown elements to the automatic numbers the columns in the periodic table are called families or groups the rows are called periods
4 0
3 years ago
consider the reaction between calcium oxide and carbon dioxide: cao ( s ) + co 2 ( g ) → caco 3 ( s ) a chemist allows 14.4 g of
lana [24]

Answer:

Explanation:

Given data:

Mass of calcium oxide = 14.4 g

Mass of carbon dioxide = 13.8 g

Actual yield of calcium carbonate = 19.4 g

Mass of calcium carbonate produced = ?

Limiting reactant = ?

Percent yield = ?

Chemical equation:

CaO + CO₂  → CaCO₃

Number of moles of CaO:

Number of moles of CaO = Mass /molar mass

Number of moles of CaO = 14.4 g / 56.1g/mol

Number of moles of CaO = 0.26 mol

Number of moles of CO₂:

Number of moles of CO₂= Mass /molar mass

Number of moles of CO₂ = 13.8 g / 44 g/mol

Number of moles of CO₂ = 0.31 mol

Now we will compare the moles of CaCO₃ with CO₂ and CaO.

                  CaO           :              CaCO₃

                    1               :                 1

                 0.26           :            0.26

                  CO₂           :                CaCO₃

                  1                 :                 1

                 0.31            :               0.31

The number of moles of CaCO₃ produced by CaO are less it will be limiting reactant.

Limiting reactant:

CaO

Theoretical yield:

Mass of CaCO₃ = moles × molar mass

Mass of  CaCO₃ = 0.26 mol × 100 g/mol

Mass of  CaCO₃ =  26 g

Percent yield:

Percent yield = Actual yield / theoretical yield × 100

Percent yield = 19.4 g/ 26 g× 100

Percent yield = 74.6 %

3 0
3 years ago
The majority of the mass of the atom is located in the _______. A) nucleus B) core electrons C) pions and quarks D) valence elec
NeX [460]

The majority of the mass of the atom is located in the nucleus. Remember that the nucleus contains both protons and neutrons and therefore, most of the mass of the atom.

5 0
3 years ago
Read 2 more answers
At a certain temperature, the ph of a neutral solution is 7.78. what is the value of kw at that temperature? express your answer
Strike441 [17]
Given the pH of the solution, we can determine [H⁺]. 

pH = -log[H⁺]
[H⁺] = 10⁻⁷·⁷⁸
[H⁺] = 1.659586907 x 10⁻⁸ M

We also know that pOH = 14 - pH. Thus, the pOH is  6.22. Given the pOH of the solution, we can determine [OH⁻]. 

pOH = -log[OH⁻]
[OH⁻] = 10⁻6.22
[OH⁻] =  6.02559586 x 10⁻⁷ M

The ionic product of water Kw, can then be calculated using the following equation.

Kw = [H⁺][OH⁻]
Kw = (1.659586907 x 10⁻⁸)(6.02559586 x 10⁻⁷)
Kw = 1.0 x 10⁻¹⁴
8 0
4 years ago
Other questions:
  • Which of the following occurs when a cool air mass meets and replaces a warm air mass
    6·1 answer
  • Whats heptane's formula?
    15·1 answer
  • Five hundred (500) milliliters of sodium chloride 0.9% is prescribed to be given over 4 hours using a volumetric pump. What's th
    13·1 answer
  • How are biomes determined
    9·2 answers
  • The molar mass of C6H6 <br><br><br> 78.11g<br> 78.108amu
    8·2 answers
  • Help help please help help!!
    11·2 answers
  • How many hydrogen atoms are there in total in the following formula?"
    8·1 answer
  • Which functional group is within the compound shown below?
    9·1 answer
  • Can someone help please? :)
    11·1 answer
  • Which lists only abiotic factors in this environment?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!