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aivan3 [116]
3 years ago
14

A cube of copper has a temperature of 5°C. The cube is placed in a closed container whose internal temperature is 85°C. What wil

l happen over time?
Heat will flow from the cube into the air in the container.


Heat will flow from the air in the container into the cube.
Chemistry
2 answers:
ddd [48]3 years ago
5 0

Answer: Heat will flow from the air in the container into the cube.

Part 2. When the temperatures of the cube and the container are equal.

Explanation:

i got it correct on edge

Assoli18 [71]3 years ago
3 0

Answer:

Heat will flow from the air in the container into the cube.

Explanation:

Heat flows from<em> places with higher</em> temperature to <em>places with lower </em>temperature.

With that information in mind then we can see that the cube of copper has a lower temperature than the air in the container (85°C > 5°C), thus heat will flow into the cube.

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Of course, at STP, dioxygen is a gas, but 10.0 g is still 10.0 g. We could calculate its volume at STP, which is 22.4 L × its molar quantity, approx. 8⋅L . There are 1.51×1023molecules O2 in 10.0 g O2 .

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Radium decays to form radon. Which equation correctly describes this decay? Superscript 226 Subscript 88 Baseline Upper R a righ
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Explanation:

Alpha decay : When a larger nuclei decays into smaller nuclei by releasing alpha particle. In this process, the mass number and atomic number is reduced by 4 and 2 units respectively.

The general representation of alpha decay reaction is:

^{A}_{Z}\textrm{X}\rightarrow ^{A-4}_{Z-2}\textrm {Rn}+ ^{4}_{2}\textrm{He}

Representation of Radium decays to form Radon

^{226}_{88}\textrm{Ra}\rightarrow ^{222}_{86}\textrm {Rn}+ ^{4}_{2}\textrm{He}

Thus 226 Subscript 88 Baseline Upper R a right arrow Superscript 222 Subscript 86 Baseline Upper R n + Superscript 4 Subscript 2 Baseline Upper H e represents alpha decay.

         

4 0
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zavuch27 [327]
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hodyreva [135]

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= 3.15x10-3 g NaHCO3

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