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Lisa [10]
3 years ago
14

Specific heat of Fe=0.473 J/g degree C; specific hear of Pb= 0.0305 J/g degree Celcius. To raise the temperature of 1.0 g of the

se metals by 1 degree Celsius,
a) both metals require the same amount of energy
b) Fe requires more energy than does Pb
c) Pb requires more energy than does Fe
d) no correct answer given
Chemistry
1 answer:
enot [183]3 years ago
8 0
B. Fe requires more energy than does Pb.
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MARKING BRAINLIEST! please help asap, i need a and b, thank you
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The time required to reduce the concentration from 0.00757 M to 0.00180 M is equal to 1.52 × 10⁻⁴ s. The half-life period of the reaction is 9.98× 10⁻⁵s.

<h3>What is the rate of reaction?</h3>

The rate of reaction is described as the speed at which reactants are converted into products. A catalyst increases the rate of the reaction without going under any change in the chemical reaction.

Given the initial concentration of the reactant, C₀= 0.00757 M

The concentration of reactant after time t is C₁= 0.00180 M

The rate constant of the reaction, k = 37.9 M⁻¹s⁻¹

For the first-order reaction: C_t =C_0-kt

0.00180 = 0.00757 - (37.9) t

t =  1.52 × 10⁻⁴ s

The half-life period of the reaction: t_{\frac{1}{2} } =\frac{C_0}{2k}

t_{\frac{1}{2} } =\frac{0.00757}{2\times 37.9}

Half-life of the reaction = 9.98 × 10⁻⁵s

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What is an acid base indicator​
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Acid-base indicators are generally weak proteolytic that change color in solution according to the pH. The acid-base equilibrium of a weak acid type of indicator (HI) in water can be represented as. [I] The acid, HI, and the conjugate base, I−, have different colors. The equilibrium expression for this process is.

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