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2 years ago

11

what must happen first before a change of state can occur (change in mass, change in position, change in volume, or change in en

ergy)

1 answer:

SVEN [57.7K]2 years ago

7 0

Answer:

Change in energy.

Explanation:

An energy change is required to shift one state to another or do any of the other listed.

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if you burn a piece of wood you will feel heat see water vapor and be left with ashes how come the matter was not destroyed

Elanso [62]

The matter wasn't destroyed because albert einsteins theory of the black hole says that matter cannot be destroyed if it is burned into the same color of a black hole. this eqation proves my thesis:

²²↑↑Ф $\left \{ {{y=2} \atop {x=2}} \right. \left \{ {{y=2} \atop {x=2}} \right. \left \{ {{y=2} \atop {x=2}} \right. \left \{ {{y=2} \atop {x=2}} \right.$

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2 years ago

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Enter the atomic symbol, including mass number and atomic number, for iodine-130.

WINSTONCH [101]

<u>Answer:</u> The atomic symbol of the given element is $_{53}^{130}\textrm{I}$

<u>Explanation:</u>

The general isotopic representation of an element is given as: $_Z^A\textrm{X}$

where,

Z represents the atomic number of the element

A represents the mass number of the element

X represents the symbol of an element

For the given isotope: 130-iodine

Mass number = 130

Atomic number = 53

Hence, the atomic symbol of the given element is $_{53}^{130}\textrm{I}$

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2 years ago

Suppose you need to heat food. What wave type from the electromagnetic spectrum could you use?

N76 [4]

Answer:

Microwave radiation

Explanation:

This radiation is the one used in microwaves.

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Um átomo X possui 8 neutrons e seu número atômico e igual a 8. Sabendo que esse atomo é isótopos de Y, que possui número de mass

hodyreva [135]

<u>Question in English : </u>
<span>
<em>An atom X has 8 neutrons and its atomic number equals 8. Knowing that this atom is isotopes of Y, which has mass number 18, answer: What is the number of neutrons in atom Y?</em>

</span><span><u>Answer :</u>

</span>

Isotopes are defined as the atoms which have same number of protons but different number of neutrons of same element. Since the proton number is same, the atomic number also same. Hence the atomic number of Y is 8.

Mass number = atomic number + neutron number

18 = 8 + neutron number

Neutron number = 10

Hence, there are 10 neutrons in Y.

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I really need helpppppppp

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4, 2, 3,1

brainliest would be fantastic

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