Water solution is considered ice
Answer: the balanced equation for the reaction between Mg and O₂ is as follows
2Mg + O₂ --> 2MgO
stoichiometry between Mg and O₂ is 2:1
number of Mg reacted - 4.00 mol
if 2 mol of Mg reacts with 1 mol of O₂
then 4.00 mol of Mg requires - 1/2 x 4.00 = 2.00 mol of O₂
then the mass of O₂ required - 2.00 mol x 32.0 g/mol = 64.0 g
64.0 g of O₂ is required for the reaction
Explanation:
Answer:
14.2 grams
Explanation:
When converting from number of atoms to grams, first convert it to moles by dividing by 6.022*10^23. Then multiply by the molar mass of the element (Lithium)
Hope this helps!
-Emma Victoria
Answer:
a. Alkene
b. Alkyne
c. Alkane
d. Alkyne
Explanation:
Hydrocarbons can be:
- Alkanes: all single bonds. Have the general formula CₙH₂ₙ₊₂.
- Alkenes: have a double bond. Have the general formula CₙH₂ₙ.
- Alkynes: have a triple bond. Have the formula CₙH₂ₙ₋₂.
a. C₈H₁₆
Alkene. n = 8 and 2n = 2.8 = 16,
b. C₄H₆
Alkyne. n = 4 and 2n-2 = 2.4-2 = 6.
c. C₇H₁₆
Alkane. n = 7 and 2n+2 = 2.7+2 = 16.
d. C₂H₂
Alkyne. n = 2 and 2n-2 = 2.2-2 = 2.
Answer:
D. The electron moved up to an energy level and has an energy of 21.72 x 10−19 J.