Answer:
- <u><em>1.7 × 10³ kg of ore.</em></u>
Explanation:
Call X the amount of aluminum ore mined to produce 1.0 × 10³ kg the aluminum metal.
Then, taking into account the yield of the reaction (82 % = 0.82) and the percent of aluminun in the ore (71% = 0.71), you can write the following equation:
- X × 71% × 82% = 1.0 × 10³ kg
↑ ↑ ↑ ↑
(mass of ore) (% of Al in the ore) (yield) ( Al metal to obtain)
You must just simplify, solve and compute:
- X = 1,000 / (0.71 × 0.82) = 1,000 / 0.5822 = 1,717.6 Kg
Round to two significant figures; 1,700 kg = 1.7 × 10³ kg of ore ← answer.
Answer;
1 mole
Explanation;
Iodine and hydrogen react according to the following equation to yield hydrogen iodide.
H2(g) + I2(s) = 2HI
Using the mole ratio; the mole ratio of H to I is 1: 1
Thus; 1 mole of hydrogen will require 1 mole of iodine to form 2 moles of hydrogen iodide.
•common trends and similarities
•similar ions going down (ex: Mg+2 and Ca+2)
•same number of electron orbitals going across
Answer:
I think the answer would be the arrangment of the mineral's atoms.
Explanation:
that is how it gets physical and chemical properties.