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Elena L [17]
3 years ago
14

5. Given the reaction:

Chemistry
1 answer:
Alja [10]3 years ago
6 0

Answer:

48 g of oxygen is needed to produced 54 g of water.

Explanation:

Given data:

Mass of O₂ = ?

Mass of H₂O = 54 g

Chemical equation:

O₂  + 2H₂  → 2 H₂O

Number of moles of H₂O:

Number of moles of  H₂O= Mass /molar mass

Number of moles of H₂O= 54 g / 18/mol

Number of moles of  H₂O= 3 mol

Now we will compare the moles of water with  oxygen .

                 H₂O             :            O₂

                  2                 :             1

                  3                  :            1/2 × 3 =1.5

              

The 3 moles of H₂O produced by 1.5 moles of oxygen.

Mass of O₂  :

Mass of O₂  :  = number of moles × molar mass

Mass of O₂  : = 1.5 mol ×32 g/mol

Mass of O₂  :  = 48 g

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wlad13 [49]

Answer: See explanation

Explanation:

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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.

8 0
3 years ago
What is the pressure of 5.0 mol nitrogen (N2) gas in a 2.0 L container at 268
CaHeK987 [17]

Answer: 54.94atm

Explanation: Please see attachment for explanation

8 0
3 years ago
What is the answer to question 7, NH4C2H3O2
Montano1993 [528]
I think it got deleted but the answer is Ammonium acetate maybe this is why it got deleted 10-9=1
3 0
3 years ago
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Step2247 [10]

Answer:

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Explanation:

6 0
3 years ago
The distance time graph for four objects is shown below:
solmaris [256]

Answer:

Option A

Explanation:

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Hope this helps.

6 0
3 years ago
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