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Degger [83]
2 years ago
10

What is the difference between alkali metals and halogens?

Chemistry
2 answers:
Airida [17]2 years ago
4 0
<h3>→soft and reactive metals. </h3>

Explanation:

<h3>Alkali metals are soft and reactive metals. They react vigorously with water and become more reactive. And other hand halogens are reactive non metals. ... Halogens can be solid, liquid, gaseous at room temperature and the melting point increase when they get bigger.</h3>

<h2>#CAREYINGTOLEARN❤️</h2>
alexandr1967 [171]2 years ago
4 0

Explanation:

alkalin metals is the first group in the periodic table

halogen is the 7 group in the periodic table

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A 20-kg bicycle carrying a 50-kg girl is traveling at a speed of 8 m/s. What is the kinetic energy of the girl
finlep [7]

Answer:

The answer to your question is Ke = 2240 J

Explanation:

Data

mass of the object = 20 kg

mass of the girl = 50 kg

speed = 8 m/s

Kinetic energy = Ke = ?

Formula

Ke = 1/2 mv²

Process

Kinetic energy is due to the movement of an object.

1.- Calculate the total mass

Total mass = 20 + 50 = 70 kg

2.- Substitution

Ke = 1/2(70)(8)²

3.- Simplification

Ke = 1/2(4480)

4.- Result

Ke = 2240 J

6 0
3 years ago
How many moles of water are in 24.3 grams of water?
shtirl [24]

Answer:

Explanation: n=m/M(molar mass)

n=24.3 grams/(16+2x1.008)grams/moles(molar mass of H2O)

n=24.3grams/18.016grams/moles

n=1.35moles

8 0
3 years ago
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Kipish [7]
Light and sound aren't matter because Photons have no mass.
3 0
2 years ago
What makes a solution a homogeneous mixture? Question 13 options:
Lesechka [4]
The answer is B. uniform in composition.
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An isomer with a branched structure will require:
Contact [7]
The  branched  structure  isomer  will require   less  energy  to  melt  than the straight  chain  isomer

    explanation
Branched  structure  isomer    has  weak  intermolecular  forces  of attraction  as  compared  to  straight  chain  isomers.  In addition the  branched  isomer  has  a  low boiling point as  compared to  straight chain isomers. Since   boiling require  the of  the  intermolecular  forces tend to have  lower  boiling  point   than straight chain
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