Answer:
plzz mark brainliast:
Explanation:
clue: The reaction has a single reactant.
Answer:
See explanation
Explanation:
In the scientific method, you always begin with asking a question. Then, you do research, make a hypothesis, and test that hypothesis based on the initial question. If experimental data does not support your hypothesis, then you can restart by asking a new question, based on what you already know. Hope this helps!
Answer:
D
Explanation:
A beaker can be used for boiling coz it can withstand high temperatures.
It can be used for measuring the volume of a solid indirectly by measuring the displacement of a liquid.
It can as well be used for mixing coz it flat bottomed
Answer:
The correct answer option d.
Explanation:
When chemical bonds are broken energy is supplied to bond to break it where as when bond is formed energy released during that process.
(ΔH = Positive)
The above reaction represents that two hydrogen atoms are combing together to form a single hydrogen gas molecule.During this process bond id forming between two atoms with release in energy.
2C₂H₂ + 5O₂ ---> 4CO₂ + 2H₂O
2 mol.....5 mol
2 mol C₂H₂ --- 5 mol O₂
35 mol C₂H₂ --- X mol O₂
X = (35×5)/2
X = 87,5 mol O₂
