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Mila [183]
3 years ago
15

Please only answer if you're going to help.

Chemistry
1 answer:
ololo11 [35]3 years ago
3 0

Answer:

1.solvent

2.unsoluble

3.solute

4.solvent

5.souble

6.aqueous

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What is the best description of what Becquerel observed in his experiment?
myrzilka [38]

The answer is: D.unstable nuclei emitting high-energy particles as they formed more stable compositions.

Those high-energy particles are alpha particles , beta particles , gamma radiation.

For example, the decay chain of ²³⁸U is called the uranium series.

Decay start with U-238 and ends with Pb-206. There are several alpha and beta minus decays.

Antoine Henri Becquerel (1852 – 1908) was a French physicist and the first person to discover evidence of radioactivity.

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5 0
3 years ago
Read 2 more answers
Table below shows the electronegativities of four elements. Which of the following bonds is the most polar?
Contact [7]

 Lets find the electronegativity difference between the bonded atoms;

C-H = 2.6-2.2 = 0.4

C-F = 4.0-2.6  = 1.4

F-F = 4.0-4.0   = 0

H-O = 3.4-2.2  = 1.2

Here the electronegativity difference is highest for C-F bond hence C-F bond is most polar.

8 0
3 years ago
Inside a room, the air is often warmer near the ceiling then near the floor. Which of the following accounts for this difference
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4 0
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Which of these properties contribute to homeostasis? Click on the correct
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Body temperature is the main one. blood ph is very important. and reflex reactions. if this was right please give me brainliest
7 0
3 years ago
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A 75 g piece of gold (Au) at 1000 K is dropped into 200 g of H2O at 300K in an insulated container at 1 bar. Calculate the tempe
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Answer:

The temperature of the system once the equilibrium has been reached = 372.55K

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Heat capacity of gold = 129 J/Kg*c.

Heat capacity of water

4,184 J/Kg*c.

Mass of gold = 75g = 0.075Kg

Mass of water = 200g = 0.2Kg

From conservation of energy

m1×C1×(t11 - t2) = m2×C2×(t2- t21)

Substituting we have

0.075 × 129×(1000-t2) = 0.2× 4184×( t2 -300) =solving for t2, we have

933.55×t2 = 347790

or t2 = 372.55K

The temperature of the system once the equilibrium has been reached = 372.55K

6 0
3 years ago
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