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Charra [1.4K]
3 years ago
8

A student was traveling to see his grandmother who lives 15 miles north of his home. He started from rest and maintained a pace

of 4 m/s before stopping at his grandmother’s house for lunch. (8.6B) Which of the following best describes the speed, velocity, and acceleration of the student’s walk?
Chemistry
1 answer:
AnnZ [28]3 years ago
8 0

Answer:

He traveled at a speed of 4 m/s with a velocity of 4m/s north, and his acceleration changed when stopping for lunch.

Explanation:

Trust me took test got it right!

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Answer:

Mass = 35.02 g

Explanation:

Given data:

Number of moles = 1.75 mol

Mass of HF = ?

Solution:

Formula:

Mass = number of moles × molar mass

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by putting values,

Mass = 1.75 mol × 20.01 g/mol

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3 years ago
Which substance has a coefficient of 2 when you balance the equation for this redox reaction? cu(s) + hno3(aq) → cu(no3)2(aq) +
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reduction half reaction 
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to balance the number of electrons , 1) x3 and 2) x2
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add 6 nitrate ions to both sides to add up to 8 and form acid with 8H⁺ ions
3Cu + 8HNO₃ --->  3Cu(NO₃)₂ + 2NO + 4H₂O 
Balanced equation for the redox reaction is as follows;
3Cu(s) + 8HNO₃(aq) → 3Cu(NO₃)₂(aq) + 2NO(g) + 4H₂O<span>(l)

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svetoff [14.1K]
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