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Lena [83]
3 years ago
9

if you could place a piece of solid silver into a container of liquid silver, would it float or sink? Explain your answer

Chemistry
2 answers:
olga55 [171]3 years ago
5 0
Liquid silver is less dense than solid silver, so the solid silver would sink.
Helga [31]3 years ago
5 0

<u>Answer:</u> The solid silver will sink in liquid silver.

<u>Explanation:</u>

Density of an object is defined as the ratio of mass of the object and volume of the object. The chemical equation representing density of an object is:

\text{Density of an object}=\frac{\text{Mass of an object}}{\text{Volume of an object}}

In solid state, the particles are closely packed. So, the volume of solid state is less than liquid state. Thus, density of solid will be more than the density of liquid.

A substance having more density will sink at the bottom and the substance having less density will float at the top.

Solid silver has more density than liquid silver.

Hence, the solid silver will sink in liquid silver.

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You have 100. grams of potassium fluoride (KF). How many moles do you have? (1 mole KF = 58.09 g KF) *
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I think its 1.72 (:

Explanation:

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3 years ago
58.0 g of K2SO4 was dissolved in 500 g of water. What is the molality of this solution?
podryga [215]

Answer: The molality of solution is 0.66 mole/kg

Explanation:

Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent.

Molarity=\frac{n\times 1000}{W_s}

where,

n = moles of solute

W_s = weight of solvent in g

moles of K_2SO_4 = \frac{\text {given mass}}{\text {Molar Mass}}=\frac{58.0g}{174g/mol}=0.33mol

Now put all the given values in the formula of molality, we get

Molality=\frac{0.33\times 1000}{500g}=0.66mole/kg

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3 years ago
Which statement is correct about the law of conversation of energy
Elden [556K]

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Energy is transferred when atoms are rearranged.

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4 years ago
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Naily [24]
Following is the balanced <span>radioactive decay series:
</span><span>
Particle/radiations generated during the reaction are labeled in bold at end of reaction. 

Care must be taken that, atomic number and atomic mass number should be balanced in each of these reactions.

1) 92 238U </span>→ <span> 90 234Th + 2 4He(</span>α particle<span>)

A = </span>90 234Th because alpha particle is emitted along with it. So atomic number of daughter element has to be 92 - 2 = 90. This corresponds to Th. <span>

2) 90 234Th  </span>→<span> 91 234Pa + -1 0e (electron)

B = -1 0e i.e electron
 because after radioactive disintegration atomic number of daughter element (Pa) is +1 as compared to parent element (Th)


3) 91 234Pa  </span>→<span> 92 234U + –1 0e (electron)

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4) 92 234U </span>→ 90 230Th + 2 4He (α particle<span>)

</span><span>In this case, 92 234U undergoes nuclear disintegration to generate 90 230Th and alpha particle

5) 90 230Th </span>→<span> 88 226Ra + 2 4He </span>(α particle)

D = 88 226Ra because alpha particle is emitted along with it. So atomic number of daughter element has to be 90 - 2 = 88. This corresponds to Ra. 

<span>6) 88 266Ra </span>→ 86 222Rn + 2 4He (α particle)

E = alpha particle because during nuclear disintegration, 88 266Ra is converted into 86 222Rn. Hence, for mass balance we have 88 - 86 = 2. It corresponds to alpha particles.
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7) 86 222Rn </span>→<span> 84 218Po + 2 4He </span>(α particle)

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<span>
8) 84 218Po </span>→<span> 82 214Pb + 2 4He </span>(α particle)

G = 82 214Pb because alpha particle is emitted along with it. So atomic number of daughter element has to be 84 - 2 = 82. This corresponds to Pb.
<span>
9) 82 214Pb </span>→<span> 83 214Bi + -1 0e (electron)

H = </span>-1 0e because after radioactive disintegration atomic number of daughter element (Bi) is +1 as compared to parent element (Pb)<span>

10) 83 214Bi </span>→<span> 84 214Po + –1 0e (electron)

I = 
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11) 84 214Po </span>→<span> 82 210Pb + 2  4He </span>(α particle)

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