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3 years ago

A force of 450 N accelerates a box across a frictionless surface at a rate of 15 m/s2. What is the mass of the box?

Chemistry

2 answers:

kari74 [83]3 years ago

7 0

Answer: Option A) 30 kg

MARK BRAINLEIST PLSS

miskamm [114]3 years ago

7 0

Answer:

30kg

Explanation:

F=ma

Force=mass×acceleration

40=m×15

m=450/15

m=30kg

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3 years ago

2Fe + 3Cl2 → 2FeCl3 which of the following options gives the correct reactant ratio?

Mademuasel [1]

<u>Answer:</u> The reactant ratio in the given chemical equation will be: $Fe:Cl_2=2:3$

<u>Explanation:</u>

Mole ratio is defined as the ratio of the amount of moles of two substances that are participating in a chemical reaction.

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$2Fe+3Cl_2\rightarrow 2FeCl_3$

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The mole ratio is basically the stoichiometric ratio of the chemical compounds taking part in a chemical reaction.

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3 years ago

15g of FeCI3 is dissolved in 450 mL of solution. What is the concentration of [CI-]?

storchak [24]

The concentration of [CI-] : 0.617 M

<h3>Further explanation</h3>

FeCl₃ dissolved in 450 mL of solution(will dissociate )

Reaction

FeCl₃⇒Fe³⁺+3Cl⁻

mol FeCl₃(MW=162,2 g/mol)

$\tt \dfrac{15}{162.2}=0.0925$

mol Cl⁻ :

$\tt \dfrac{3}{1}\times 0.0925=0.2775$

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Sidana [21]

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