Rocks and minerals are usually composed of two or more minerals
<u>Answer:</u> The spacing between the crystal planes is 
<u>Explanation:</u>
To calculate the spacing between the crystal planes, we use the equation given by Bragg, which is:
where,
n = order of diffraction = 2
= wavelength of the light = 
(Conversion factor: 
)
d = spacing between the crystal planes = ?
= angle of diffraction = 22.20°
Putting values in above equation, we get:
Hence, the spacing between the crystal planes is
Answer:
The coefficient before potassium (K) balances this chemical equation is 2.
Explanation:
_K +Cl₂ → 2KCl
K =1 ; Cl =2
K=1 × 2 = 2
Cl = 1 × 2 = 2
2 K +Cl₂ = 2 KCl
Answer: See explanation
Explanation:
The negative effects of video games include:
1. Social disconnection- One negative effect of video games is that it brings about social disconnection. Video games are typically addictive and this leads to the individual playing the game gradually disconnecting from the social life. Such people tends to play games rather than having conversations with their friends or family members.
2. Addiction - Video games are addictive which can lead to depression or bring about mental health disorder.
3. Wrong values - Some video games instill wrong values in children. Such values include violence, aggression and vengeance.
4. Negative academic achievement - Students who play video games a lot tend to have a negative academic achievement as the time they could have used in reading or studying is used for playing games and thus tends to have an effect on the performance in school.
5. Health hazards- Video games may lead to health hazards- such as nerve compression, obesity, and video-induced seizures.
The positive effect of video games are:
1. Problem solving - Video games train ones brain to be creative and also come up with solution to challenges.
2. Quick thinking - Video games help one to think quickly in order to solve challenges and overcome obstacles.
3. Create positive emotions - Easy games can bring about positive emotions and uplift ones mood, and help in promoting relaxation.
4. Stimulate learning - Playing video games can help an individual to learn new skills.
