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nataly862011 [7]
3 years ago
13

A potassium iodide compound is represented by which formula?

Chemistry
2 answers:
andrew11 [14]3 years ago
7 0
It is represented by C) KI

K+
I-

So it's KI
Tanya [424]3 years ago
5 0
<h2>Answer : Option C) KI</h2><h3>Explanation :</h3>

A potassium iodide compound is represented as KI.

It has K^{+} and I^{-} in it.

The potassium (K) reacts with Iodine vapors (I) to form KI (Potassium iodide).

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Suppose you start with one liter of vinegar and repeatedly remove 0.08 L, replace with water, mix, and repeat. a. Find a formula
Bumek [7]

Answer:

0.92^n

Explanation:

Given that :

Initial amount of vinegar = 1 Litre

Number of litres removed repeatedly = 0.08 Litre

Since the amount removed each time is constant, then ;

Initial % = 100% = 100/100 = 1

. Using the relation :

Amount of vinegar in mixture :

Initial * (1 - amount removed / initial amount)^n

n = number of times repeated

1 * (1 - 0.08/1)^n

1 * (1 - 0.08)^n

1 * 0.92^n

Hence,

For nth removal,

Concentration will be :

0.92^n ; for n ≥ 1

7 0
2 years ago
I need help wit this can someone pls explain???
Crazy boy [7]

Based on the nature of the sub-atomic particles, the correct answers are:

5. No Charge

6. Negative

7. Neutrons and Protons

8. 35 electrons

9. atomic number is 5

10. atomic mass is 11

11. number of protons is 15

12. number of electrons is 20

13. number of neutrons is 30 (55 -25)

14. mass number is 7

15. number of neutrons is 11 (36 - 25)

<h3>What are the sub-atomic particles?</h3>

The sub-atomic particles are the electrons, protons, and neutrons.

The electron is negatively-charged, the proton is positively-charged, whereas, the neutron is neutral and has no charge.

The number of electrons in a neutral atom is equal to the number of protons.

The sum of protons and neutrons gives the mass number of the atom.

Considering the given questions:

5. What type of charge does a neutron have?

Answer = No Charge

6. What type of charge does an electron have?

Answer =  Negative

7. Which two subatomic particles are located in the nucleus of an

Answer = Neutrons and Protons

8. If an atom has 35 protons in the nucleus, how many electrons will it have orbiting the nucleus?

Answer = 35 electrons

9. What is the atomic number of the atom in the diagram above?

Answer = atomic number is 5

10. What is the atomic mass/mass number of the atom in the diagram above?

Answer = atomic mass is 11

11. How many protons are in the nucleus of an atom with an atomic number of 15?

Answer = number of protons is 15

12. How many electrons are in the nucleus of an atom with an atomic number of 20?

Answer = number of electrons is 20

13. How many neutrons are in the nucleus of an atom with an atomic number of 25?

Answer = number of neutrons is 30 (55 -25)

14. What is the mass number of an atom with 3 protons, 4 neutrons, and 3 electrons?

Answer = mass number is 7

15. How many neutrons are in the nucleus of an atom that has an atomic mass of 36 and an atomic number of 25?

Answer = number of neutrons is 11 (36 - 25)

In conclusion, the mass number of an atom is the number of protons and neutrons in the nucleus of the an atom.

Learn more about atomic number and mass number at: brainly.com/question/487717

#SPJ1

7 0
1 year ago
Could you please help
Semenov [28]
I would say D, because you need to start with nothing to measure the different sizes as they start to grow. hope this helps!
8 0
3 years ago
A testable question is one that _____.
cestrela7 [59]

Answer:

One that “Can be answered by conducting an experiment”

Explanation:

8 0
3 years ago
Read 2 more answers
Which statements accurately describe binary star systems? Check all that apply. have more than two stars have stars that are alw
Westkost [7]

Answer:

have stars that might appear to wobble

often have one star that is brighter than the other

Explanation:

A binary star system is a star system made up of mostly two stars that moves round their common fixed center.

The two orbiting stars are gravitationally bonded to one another and they move round each other.

Most binary stars might appear wobble. One of the stars often appears brighter than the other.

6 0
2 years ago
Read 2 more answers
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