Why does it take a large truck longer to stop than a compact car, even though both are traveling at the same velocity?

Chemistry

2 answers:

BartSMP [9]3 years ago

4 0

It is heavier and requires more of all-time gas,time,power....

Rashid [163]3 years ago

3 0

The trucks weight gets pulled forward by gravity more than the small, less heavy car.

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What mass of H2 is needed to react with 8.75 g of O2 according to the following equation: O2(g) + H2(g) → H2O(g)?

alina1380 [7]

Mass of H₂ needed to react with O₂ : 1.092 g

<h3>Further explanation</h3>

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

Reaction

O₂(g) + 2H₂(g) → 2H₂O(g)

mass of O₂ : 8.75 g

mol O₂(MW=32 g/mol) :

$\tt \dfrac{8.75}{32}=0.273$