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3 years ago

Which of these would be most attracted to a magnet?

2 answers:

8 0

The one that is the most attracted to a magnet is the element with an electron configuration that has the most number of unpaired electrons. In this case, 3d10 is already full hence no unpaired electrons, as well as 3s2 and 3p6. 3d5 does not have a full octet, hence the answer is C

svet-max [94.6K]3 years ago

3 0

1s2 2s2 2p6 2s2 3p6 4s2 3d5

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On a warm sunny day, a deer is searching something to drink. The deer is most likely responding to which kind of stimulus?

quester [9]

Answer:

External stimulus of thirst

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3 years ago

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What is the frequency of a photon having an energy of 4.91 × 10–17 ? (c = 3.00 × 108 m/s, h = 6.63 × 10–34 J · s)

AlexFokin [52]

Answer:

The frequency of the photon is 7.41*10¹⁶ Hz

Explanation:

Planck states that light is made up of photons, whose energy is directly proportional to the frequency of radiation, according to a constant of proportionality, h, which is called Planck's constant. This is expressed by:

E = h*v

where E is the energy, h the Planck constant (whose value is 6.63*10⁻³⁴ J.s) and v the frequency (Hz or s⁻¹).

So the frequency will be:

$v=\frac{E}{h}$

Being E= 4.91*10⁻¹⁷ J and replacing:

$v=\frac{4.91*10^{-17} J}{6.63*10^{-34} J.s}$

You can get:

v= 7.41*10¹⁶ $\frac{1}{s}$ = 7.41*10¹⁶ Hz

The frequency of the photon is 7.41*10¹⁶ Hz

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3 years ago

What is the name for the lowest layer of the atmosphere, which is most influenced by human activities?

bagirrra123 [75]

The Answer Is B Because You Have To Divide The 9

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3 years ago

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what special requirements would a helicopter rotor need to have in order to make a helicopter flight possible on the red planet.

professor190 [17]

Answer:

Explanation:

may u explain what u mean then i will be able to help u because i like knows this but what u mean will be better so i can tell u the right answer thanks have a good day

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3 years ago

If 1.20 g of Zn is allowed to react with 2.00 g of CuSO4, according to the equation below, how many grams of Zn will remain afte

sdas [7]

Answer:

After the reaction is complete 0.94 g of Zn are still remaining.

Explanation:

We define the reaction as:

CuSO₄ (aq) + Zn (s) → ZnSO₄ (aq) + Cu(s)

In order to determine the grams of Zn that will remain after the reaction is complete, we need to confirm if the Zn is the limiting reactant.

We determine moles of each reactant:

1.20 g / 65.41 g/mol = 0.0183 moles of Zn

2 g / 159.6 g/mol = 0.0125 moles of sulfate

Ratio is 1:1. 1 mol of sulfate needs 1 mol of Zn to react.

If I have 0.0125 moles of sulfate I will ned the same moles of Zn to complete the reaction.

I have 0.0183 moles, so it is ok that Zn is the reagent in excess

We convert the moles to mass and we make the substraction to answer the grams of Zn that will remain after the reaction:

0.0183 moles . 159.1 g /mol = 2.92 g

0.0125 moles . 159.1 g /mol = 1.98 g

To complete all the reaction we need 2.92 g of sulfate, but I have 1.98 g

After the reaction is complete (2.92 g - 1.98 g) = 0.94 g are still remaining.

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3 years ago