Answer:
No
Explanation:
No, this is an addition reaction
HC≡CH + 2H-H ----> H3C - CH3
Answer:
ΔrxnHº =-1,124.3 kJ
Explanation:
To solve this question we first need to search for the enthalpies of formation of reactants and products and calculate the change in enthalpy of reaction utilizing the equation
ΔrxnHº = ∑ νΔfHº reactants - Σ νΔfHº products
where ν is the stoichiometric coefficient of the compound in the balanced equation .
ΔfHº H₂S(g) = -20.50 kJmol⁻¹
ΔfHº 0₂(g) = 0 ( O₂ is in standard state )
ΔfHº H₂O(l) = -285.8 kJmol⁻¹
ΔfHº SO₂(g) = -296.84 kJmol⁻¹
ΔrxnHº = [2 x -285.8 + 2 x -296.84] - [2 x -20.50]
= - 1,124.3 kJ
the atomic number of Cd is 48
atomic number gives the number of protons in the atom
elements in their ground state, the number of protons is equal to the number of electrons
therefore number of electrons is 48
the condensed electronic configuration is [Kr} 4d¹⁰ 5s²
the outermost energy shell is the 5th energy shell with 2 electrons in the 5s subshell.
Valence electrons are the electrons in the outermost energy shell that are involved in chemical bonding.
there are 10 electrons in the 4d subshell however 4th energy shell is not the outermost energy shell therefore these electrons are not regarded as valence electrons
In Cd there are 2 electrons in the outermost energy shell therefore Cd has 2 valence electrons.
answer is 2
Answer: 82.0 g/mole
Explanation:
Use the units to see that if we divide 1.64 grams by 0.0200 moles, we'll get a number that is grams/mole, the definition of formula mass.
1.64/0.0200 = 82.0 g/mole (3 sig figs)
We can't tell from this alone what the molecular formula might be, but C6H10 (cyclohexene) comes close (82.1 grams/mole).
A I believe should be right!