Answer:
To design a good scientific research, there is a few things you need. You need to have an experiment first of course . You need an hypothesis, a conclusion, and research. Question,analysis, and observation.
Explanation:
If this helps : In fifth grade we did a scientific experiment that we had to present. I chose to do if bananas turned bad first under UV light or sun rays and my hypothesis was that they would turn bad under the sun-rays. My conclusion was that they didn't. My observation was written down in a notebook of what I saw with each passing day. Research was what I looked up about of course how long bananas lasted and how long they didn't.
Hope it helps :)
Answer:
Explanation:
From the question we are told that:
Mass of mixture
Mass of Barium
Equation of Reaction is given as
Generally the equation for Moles of Barium is mathematically given by
Since
Therefore
Generally the equation for Mass of Barium is mathematically given by
Therefore
65 miles Because half of 50 is 25 + 40 = 65
Answer:
a) B
b) A
c) B
d) A
Explanation:
If the strength of an inter-molecular force increases, then
vapour pressure decreases and boiling point increases
- Hence, B is a gas at 300 mmHg due to its low boiling point
- A has a higher boiling point because of its strong inter-molecular forces
- B has weaker inter-molecular forces due to its higher vapour pressure
- A has higher heat of vaporization, because it has strong inter-molecular forces