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scZoUnD [109]
3 years ago
15

Elements K and L have 12 and 17 protons respectively. If k has 24 neutrons and L has 36, in a tabular form identify the number o

f protons, neutrons and electrons possessed by the ions of the two elements.
Chemistry
1 answer:
Delvig [45]3 years ago
5 0

Answer: try watchong videos search up what you just say and wtch the videos it could help

Explanation:

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Humans are protected from some infections by specialized cells which produce chemicals that
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Those cells kill microbes
8 0
3 years ago
What is the IUPAC name for the compound FeS?
densk [106]
The correct answer is option 3. The IUPAC name is Iron(II) sulfide. It is the less stable amorphous form.  When this is powdered, it is pyrophoric or it ignites spontaneously in air. It readily reacts with hydrochloric acid producing hydrogen sulfide.
5 0
3 years ago
A 34.0 g piece of metal is heated to 92.0°C then placed in a beaker of water containing 22.0 g of water at 19.0°C. The temperatu
lapo4ka [179]

Answer:

0.1988 J/g°C

Explanation:

-Qmetal = Qwater

Q = mc∆T

Where;

Q = amount of heat

m = mass of substance

c = specific heat of substance

∆T = change in temperature

Hence;

-{mc∆T} of metal = {mc∆T} of water

From the information provided in this question, For water; m= 22.0g, ∆T = (24°C-19°C), c = 4.18J/g°C.

For metal; m= 34.0g, ∆T = (24°C-92°C), c = ?

Note that, the final temperature of water and the metal = 24°C

-{34 × c × (24°C-92°C)} = 22 × 4.18 × (24°C-19°C)

-{34 × c × (-68°C)} = 459.8

-{34 × c × -68} = 459.8

-{-2312c} = 459.8

+2312c = 459.8

c = 459.8/2312

c = 0.1988

The specific heat capacity of the metal is 0.1988 J/g°C

6 0
3 years ago
Which is a property of potassium (K)?
kumpel [21]

It is highly reactive and when it is kept in open it does react with the oxygen present in the surroundings and burns therefore it is kept immersed in kerosene and please thank me and if you need more comment

5 0
3 years ago
Calculate the pH of a (0.000765) M solution of KOH
likoan [24]

Answer:

pH = - log(0.000765)

= -(-3.11)

= 3.1

so the solution is basic

rest you can check values using calculator

6 0
3 years ago
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