Answer:
When an object is heated up, its particles gain more kinetic energy and hence its internal energy increases. A change in state will also result in a change in internal energy.
When an object cools down, heat is withdrawn from it. Hence, the entropy of the object decreases. But the decrease in entropy leads to the transfer of energy to the surrounding.
I hope this helps you! Good luck with school! :D
A suitable hypothesis might be that temperature affects the rate of chemical modification, and the independent variable is temperature.
<h3>What is a hypothesis?</h3>
A hypothesis is a given explanation about a question that emerged by observing form the real world.
In this case, the dependent variable is the rate of chemical modification because this variable is modified in the experiment.
In conclusion, a suitable hypothesis might be that temperature affects the rate of chemical modification, and the independent variable is temperature.
Learn more about the hypothesis here:
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Answer:
1.Hydrogen: 1s1 2 - Helium: 1s2
45 – Rhodium: [Kr], 5s2, 4d7 46 – Palladium: [Kr], 5s2, 4d8
47 – Silver: [Kr], 5s2, 4d9 48 – Cadmium: [Kr], 5s2, 4d10
49 – Indium: [Kr], 5s2, 4d10, 5p1 50 – Tin: [Kr], 5s2, 4d10, 5p2
Thus 43 electrons, so the neutral atom has atomic number 43. Look at a periodic table and you see that this element is technetium.
Element Atomic Number Element Symbol Element Electron Configuration
45 Rh [Kr] 4d8 5s1
46 Pd [Kr] 4d10
47 Ag [Kr] 4d10 5s1
48 Cd [Kr] 4d10 5s2
