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2 years ago

What happens to impacts on the surface of bodies without an atmosphere?

1 answer:

7 0

<span>https://quizlet.com/21774816/94-and-95-science-flash-cards

i think uu can find it here lol hope it helps

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The penguin has a ___ body that helps it to move quickly in water.

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The penguin has a sleek body that helps it to move quickly in water.

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3 years ago

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Carbon 14 has a half-life of 5730 years. A geologist has dated a fossil sample, at roughly 28650 years. How much carbon 14 remai

IgorC [24]

<h3>Answer </h3>

After another 5730 years ( three half lives or 17190 years) 17.5 /2 = 8.75mg decays and 8.75g remains left. after three half lives or 17190 years, 8.75 g of C-14 will be

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3 years ago

_____ occurs when the product of the ion concentrations exceeds the Ksp.

arlik [135]

Precipitation occurs when the product of the ion concentration exceeds the Ksp.

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3 years ago

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Explain how nature of cathode rays does not depend on nature gas?

Ilia_Sergeevich [38]

Answer:

The characteristics of cathode rays do not depend upon the material of electrodes and the nature of the gas present in the cathode ray tube.

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1 year ago

g Select the correct statements. I. Reduction is the loss of electrons, and oxidation is the gain of electrons II. Reduction is

Karolina [17]

<u>Answer:</u> The correct answer is Option D.

<u>Explanation:</u>

Reduction reaction is defined as the reaction in which a substance gains electrons. Here, the oxidation state of the substance decreases.

$X^{n+}+ne^-\rightarrow X$

Oxidizing agents are the agents that helps in the oxidation of other substance and itself gets reduced. These agents undergoes reduction reactions.

Oxidation reaction is defined as the reaction in which a substance looses its electrons. Here, oxidation state of the substance increases.

$X\rightarrow X^{n+}+ne^-$

Reducing agents are the agents that helps in the reduction of the other substance and itself gets oxidized. These agents undergoes reduction reactions.

Oxidation state is the number which is given to an atom when it looses or gains electron. It is written as a superscript. In a compound, the total charge is equal to the sum of the charges of all atoms in that compound. <u>For Example:</u> In $MnO_4^-$ , manganese has +7 oxidation number and oxygen has -2.

So, the charge on the compound = $[=7+(4\times (-2))]=-1$

Hence, the correct answer is Option D.

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3 years ago