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A student placed three different sized cubes of agar jelly into separate beakers containing the same concentration of hydrochloric acid - Edexcel - GCSE Biology Combined Science - Question 2 - 2020 - Paper 1
Question 2
A student placed three different sized cubes of agar jelly into separate beakers containing the same concentration of hydrochloric acid. The cubes contained a pink ... show full transcript
Worked Solution & Example Answer:A student placed three different sized cubes of agar jelly into separate beakers containing the same concentration of hydrochloric acid - Edexcel - GCSE Biology Combined Science - Question 2 - 2020 - Paper 1
Step 1
Calculate the distance diffused by hydrochloric acid in one second
Answer
To find the distance diffused in one second, we use the formula:
ext{Distance per second} = rac{ ext{Total Distance}}{ ext{Time}}Given the total distance of 3 mm and the time of 120 seconds:
ext{Distance per second} = rac{3 ext{ mm}}{120 ext{ s}} = 0.025 ext{ mm/s}Thus, the distance diffused by hydrochloric acid in one second is 0.025 mm.
Step 2