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tigry1 [53]
3 years ago
6

Please help appreciate it!!

Chemistry
1 answer:
zysi [14]3 years ago
8 0

Explanation:

Ionization reactions are reactions that involve an electrically neutral atom or molecule be converted into electrically charged atom or molecule (ions).

Ions are recognized by the (⁺) and (⁻) signs.

First Reaction: Ions are formed so this option is correct.

Second Reaction: Ions are formed so this option is correct.

Third Reaction: This option is wrong. No ions are formed.

Fourth Reaction: Ions are formed so this option is correct.

Fifth Reaction: Ions are formed so this option is correct.

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MEASUREMENT AND MATTER Interconverting temperatures in Celsius and Kelvins The metal osmium becomes superconducting at temperatu
nexus9112 [7]

Answer: -272^0C.

Explanation:

Temperature of the gas is defined as the degree of hotness or coldness of a body. It is expressed in units like ^0C and K  

These units of temperature are inter convertible.

We are given:

Temperature of the gas = 655mK=0.655K    (1mK=0.001 K)

Converting this unit of temperature into ^0C by using conversion factor:

(t-273.15)^0C=tK

273.15K=0^0C

Thus 0.655K=(0.655-273.15)^0C=-272^0C

Thus the temperature is -272^0C.

5 0
3 years ago
An element has two naturally-occurring isotopes. The mass numbers of these isotopes are 115.00 u and 117.00 u, with natural abun
denis23 [38]

(115.00)(0.25)+(117.00)(0.75)=\boxed{116.50 \text{ u}}

3 0
2 years ago
There's a atom with atomic number of 9. it has 8 neutrons.what is the number of protons
Sidana [21]

Explanation:

proton normally = atomic number

protons = 9

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An atom of sodium has atomic number 11 how many protons are there ?
adoni [48]
An atom of sodium has 11 protons

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