Answer:
B
Explanation:
FUN is not building block of matter.
The total number of electron pairs that are shared between the two carbon atoms in a molecule of ethyne is 3.
Answer 1 : The balanced complete ionic equation will be,


By removing the spectator ion in this equation, we get the balanced ionic equation.

Answer 2 : The balanced net ionic equation will be,


By removing the spectator ion in this equation, we get the balanced ionic equation.

Answer 3 : The balanced net ionic equation will be,


By removing the spectator ion in this equation, we get the balanced ionic equation.

Balanced equations : Balanced equations are the equations in which the number of individual elements present on the reactant side must be equal to the number of individual elements present on the product side.
Spectator ions : It is defined as the ions which do not participate in the chemical reaction. These ions exists in the same form on both the sides of the reaction.
Answer:
27 liters of hydrogen gas will be formed
Explanation:
Step 1: Data given
Number of moles C = 1.03 moles
Pressure H2 = 1.0 atm
Temperature = 319 K
Step 2: The balanced equation
C +H20 → CO + H2
Step 3: Calculate moles H2
For 1 mol C we need 1 mol H2O to produce 1 mol CO an 1 mol H2
For 1.03 moles C we'll have 1.03 moles H2
Step 4: Calculate volume H2
p*V = n*R*T
⇒with p = the pressure of the H2 gas = 1.0 atm
⇒with V = the volume of H2 gas = TO BE DETERMINED
⇒with n = the number of moles H2 gas = 1.03 moles
⇒with R = the gas constant = 0.08206 L*Atm/mol*K
⇒with T = the temperature = 319 K
V = (n*R*T)/p
V = (1.03 * 0.08206 *319) / 1
V = 27 L
27 liters of hydrogen gas will be formed
The very last option is the correct answer.