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2 years ago

Which statement explains how the charges on objects determine the electric force between them?(1 point)

Chemistry

2 answers:

lubasha [3.4K]2 years ago

8 0

Answer:

Objects with the same charge repel each other, and objects with opposite charges attract each other.

Explanation:

The Coulomb law states that opposite charges attract each other and like charges repel each other. That means two positive charges repel each other but a positive and a negative charge attract.

Delicious77 [7]2 years ago

7 0

Concisely:

Opposites attract
Same repel

Hope that helps. :)

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why can an increase in temperature lead to more effective collisions between reactant particles and an increase in the rate of a

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What is the ‘structural formula’ of Fluorine ? <br> BRAINLIEST ANSWER !!

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Answer is: the structural formula of fluorine is F-F.

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3 years ago

A solution of 400mg of optically active 2-butanol in 10 mL of water, placed in a 20 cm cell shows an optical rotation of 40o. Wh

labwork [276]

Answer:

Specififc rotation [∝] = 0.5° mL/g.dm

Explanation:

Given that:

mass = 400 mg

volume = 10 mL

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The Concentration = mass/volume

Concentration = 400/10

Concentration = 40 g/mL

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Specififc rotation [∝] = ∝/l × c

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3 years ago

Vinegar, the commercial name for acetic acid, HC2Hs02, is a monoprotic organic acid. A 5% (w/v) solution of vinegar is used to t

damaskus [11]

19.2 g of vinegar solution

Explanation:

Here we have the chemical reaction between acetic acid (CH₃COOH) and calcium carbonate (CaCO₃):

2 CH₃COOH + CaCO₃ → (CH₃COO)₂Ca + CO₂ + H₂O

number of moles = mass / molecular weight

number of moles of CaCO₃ = 0.8 / 100 = 0.008 moles

Knowing the chemical reaction, we devise the following reasoning:

if 2 moles of CH₃COOH react with 1 moles of CaCO₃

then X moles of CH₃COOH react with 0.008 moles of CaCO₃

X = (2 × 0.008) / 1 = 0.016 moles of CH₃COOH

mass = number of moles × molecular weight

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Now to find the volume of vinegar acid (solution of acetic acid) with a concentration of 5% (weight/volume) we use the following reasoning:

if there are 5 g of acetic acid in 100 mL of vinegar solution

then there are 0.96 g of acetic acid in Y mL of vinegar solution

Y = (0.96 × 100) / 5 = 19.2 g of vinegar solution

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