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Linh D.
Ph.D. Student in Chemical Engineering
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Basic Chemistry
TutorMe
Question:

x Ca(OH)2 + y H3PO4 → a Ca3(PO4)2 + b H2O

Linh D.
Answer:

x = 3 y = 2 a = 1 b = 6 3 Ca(OH)2 + 2 H3PO4 → Ca3(PO4)2 + 6 H2O

Chemical Engineering
TutorMe
Question:

How does paint dry?

Linh D.
Answer:

The solvents evaporate and the paint particles solidifies.

Algebra
TutorMe
Question:

Point A and point B are 10 meters apart. If point A moves half of the distance every minute, how long would it take for the distance equals to 0

Linh D.
Answer:

Never. Reason: 1st minute: 10/2 = 5 meter apart. 2nd minute: 5/2 = 2.5 meter apart. 3rd minute: 2.5/2 = 1.25 meter apart 4th minute: 1.25/2=0.625 meter apart 5th minute: 0.625/2=0.3125 meter apart ..... : 9.5367 e-6 meter apart the distance approaches 0, not equal to 0.

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