Answer:
25%.
Explanation:
The following data were obtained from the question:
Experimental yield = 30 g
Actual yield = 40 g
Percentage error =..?
Thus, we can calculate the percentage error as follow:
Percentage error = |Experimental – Actual | / Actual × 100
Percentage error = |30 – 40|/40 × 100
Percentage error = 10/40 × 100
Percentage error = 25 %
Therefore, the percentage error in calculating the yield is 25%
Answer:
21. Erosion causes physical changes. For example - Land degradation, deforestation.
20. B statement is closely related to climate.
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Salt water is considered a compound since water is H20 (conpound) and Salt with is NaCl.
It means the relationship between two systems connected only by a diathermic wall.
color (intensive)
density (intensive)
volume (extensive)
mass (extensive)
boiling point (intensive): the temperature at which a substance boils.
melting point (intensive): the temperature at which a substance melts.