The answer is A-Gravity. Why? This is because B and C are examples of chemical weathering and not mechanical. Although choice D may seem viable lava intrusion is not a direct cause of mechanical weathering although lava pushing upward may help in aiding mechanical weathering it would not be considered a big enough cause, thus gravity is the correct answer.
Answer:
Explanation:
what wheres the answer???
Answer:
C. 63.3%
Explanation:
Theoretical yield = 47.2g
Actual yield = 29.9g
Percentage yield = ?
The percentage yield of a compound after chemical synthesis is the ratio of the actual yield to the theoretical yield multiplied by 100.
Percentage yield = (actual yield / theoretical yield) × 100
Percentage yield = (29.9 / 47.2) × 100
Percentage yield = 0.6334 × 100
Percentage yield = 63.34%
The percentage yield of Fe is 63.34%
