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3 years ago

Which of the following would most likely result in an increase in reaction rate? placing the reactants on a hotplate

Chemistry

1 answer:

puteri [66]3 years ago

4 0

Answer:

placing the reactants on a hot plate

Explanation:

If the temperature goes up, the reaction rate will increase. Because the particle will move faster and makes the kinetic energy larger.

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A 19-g piece of metal absorbs 186.75 joules of heat energy, and its temperature changes from 35°C to 175°C. Calculate the specif

slavikrds [6]

Answer:

0.0702J/g°C the specific heat capacity of the metal.

Explanation:m

$Q=m\times c\times \Delta T=m\times c\times (T_{2}-T_{1})$

where,

Q = heat absorbed by metal = 186.75 J

$m_1$ = Mass of metal= 19 g

$T_1$ = Initial temperature of metal = $35^oC$

$T_2$ =Final temperature of metal = $175^oC$

$c$ = specific heat of metal= ?

$186.75 J=19 g\times c\times (175^oC-35^oC)$

$c=\frac{186.75 J}{19 g\times (175^oC-35^oC)}$

$c=0.0702J/g^oC$

0.0702J/g°C the specific heat capacity of the metal.

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3 years ago

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Oliga [24]

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IrinaVladis [17]

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3 years ago

A wave with a higher frequency has a longer wavelength TRUE FALSE

BartSMP [9]

Answer:

true

Explanation:

A wave with a higher frequency has a longer wavelength

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Natasha_Volkova [10]

Answer:

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Explanation:

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