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3 years ago

Which is a mixture?

Chemistry

2 answers:

Rama09 [41]3 years ago

5 0

Potassium and chlorine

Eva8 [605]3 years ago

4 0

Answer: Option (d) is the correct answer.

Explanation:

When two different atoms with similar composition are combined together by a chemical reaction then the product formed is known as compound.

For example, Potassium chloride is a compound as it has 1:1 composition, that is, one potassium atom is combined with one chlorine atom.

On the other hand, potassium metal is an element because it consists of only atoms of potassium.

Whereas when two different elements combine together and have different composition then it results in the formation of a mixture.

For example, potassium and chloride is a mixture as we cannot tell its composition without conducting an experiment.

Thus, we can conclude that out of the given options potassium and chlorine is a mixture.

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Balanced nuclear equation forces the alpha decay Po-210

Serjik [45]

Answer:

$_{84}^{210}\text{Po} \longrightarrow \, _{82}^{206}\text{Pb} \, + \, _{2}^{4}\text{He}$

Explanation:

Your unbalanced nuclear equation is:

$_{84}^{210}\text{Po} \longrightarrow \, _{x}^{y}\text{Z} + \, _{2}^{4}\text{He}$

The main point to remember in balancing nuclear equations is that the sums of the superscripts and the subscripts must be the same on each side of the equation.

Then

84 = x + 2, so x = 84 - 2 = 82

210 = y + 4, so y = 210 - 4 = 206

Element 82 is lead, so the nuclear equation becomes

$_{84}^{210}\text{Po} \longrightarrow \, _{82}^{206}\text{Pb} \, + \, _{2}^{4}\text{He}$

8 0

3 years ago

Question 1 (1 point)

Sloan [31]

Answer:

last one

Explanation:

3 0

2 years ago

Which metals may be oxidized by H+ under standard-state conditions? Ag+(aq) + e– → Ag(s) E° = 0.80 V Cu2+(aq) + 2e– → Cu(s) E° =

Debora [2.8K]

Answer is: tin and zinc, because they standard potential as less than zero.
Tin and zinc are oxidized to tin and zinc cations (with +2 charge) and hydrogen anions are reduced to hydrogen molecules with neutral charge.
Zn → Zn²⁺ + 2e⁻; 2H⁺ + 2e⁻ → H₂.
<span>Oxidation is increase of oxidation number and reduction is decrease of oxidation number.</span>

8 0

3 years ago

Garfield (weighing 24 lbs) took a flight from the earth to the moon (where the gravity is 1/6 the gravity here on earth) on the

Nana76 [90]

Answer:

Reason: Gravitational pull of the Moon

Explanation:

Weight of Garfield is 24 lbs on the Earth. He took a flight from the Earth to the Moon where the gravity is 1/6 of the gravity on the Earth.

But when reaches the Moon he found he weighed only 6 lbs. It is due to the gravitational pull of the Moon.

Mass of an object reamins the same at every location while its weight changes due to the change in acceleration due to gravity. It is equal (on Moon) to 1/6 the of acceleration due to gravity on the earth.

3 0

3 years ago

Solve for x in the following problem.<br><br> d=t/x

Crank

Solve for x.

d=tx

Multiply both sides by x.

dx=t

Divide both sides by d.

dx/d = t/d

x = t / d

6 0

3 years ago