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4 years ago

How much heat is absorbed when 100.0g of ice is melted?

Chemistry

1 answer:

Elena L [17]4 years ago

8 0

The quantity of heat absorbed is 33.4 kJ.

Δ<em>H</em>_fus = 334 J·g⁻¹

<em>q = m</em>Δ<em>H</em>_fus = 100.0 g × 334 J·g⁻¹ = 3.34 × 10⁴ J = 33.4 kJ

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Which of the following statements is true based on the propositions of the kinetic molecular theory?

Delvig [45]

The answer is 4.
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3 years ago

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One isotope of oxygen differs from another isotope of oxygen in *

Reptile [31]

Each isotope of Oxygen has a different number of neutrons

<h3>Further explanation </h3>

The elements in nature have several types of isotopes

Atomic mass is the average atomic mass of all its isotopes

Isotopes are atoms has the same number of protons but has a different number of neutrons.

So Isotopes are elements that have the same Atomic Number (Proton)

Some of the isotopes of oxygen are:

$\tt _8^{16}O,_8^{17}O,_8^{18}O$

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3 years ago

What type of radiation is emitted when chromium-51 decays into manganese-51? Show the nuclear equation that leads you to this an

Anastasy [175]

It's a beta decay
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4 0

3 years ago

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Why would an atom become an ion?

crimeas [40]

Answer:

Explanation: correct me if im wrong

5 0

3 years ago

The decomposition of carbon disulfide to carbon monosulfide and sulfur is first order with k=2.8 ×10^-7 at 1000°C .What is the h

RoseWind [281]

Answer:

2.5×10⁶ s

Explanation:

From the question given above, the following data were obtained:

Rate constant (K) = 2.8×10¯⁷ s¯¹

Half-life (t½) =?

The half-life of a first order reaction is given by:

Half-life (t½) = 0.693 / Rate constant (K)

t½ = 0.693 / K

With the above formula, we can obtain the half-life of the reaction as follow:

Rate constant (K) = 2.8×10¯⁷ s¯¹

Half-life (t½) =?

t½ = 0.693 / K

t½ = 0.693 / 2.8×10¯⁷

t½ = 2.5×10⁶ s

Therefore, the half-life of the reaction is 2.5×10⁶ s

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3 years ago