Answer:
c
Explanation:
esuba is activation energy
Answer:
A hyphothesis is tentative statement and a
A thriry has a strong predictive power
Answer:
10.
Explanation:
Hello,
In this case, for the given reaction:
By knowing the law of conservation of mass must be respected, the following coefficients do balance the chemical equation:
So the sum of all the coefficients is 10.
Regards.
Answer:
0.635 cm³
Explanation:
You divide the mass by the density of iron (7.87 g/cm³)
<em>D = m</em>/<em>V</em> Multiply both sides by V.
<em>DV = m</em> Divide both sides by D.
<em>V</em> = <em>m</em>/<em>D</em> Insert the values.
<em>V </em>= 5.00/7.87 Do the division.
<em>V</em> = 0.635 cm³
Answer:
Answer : (1) :-
Volume of water filled in the pycnometer is given as = 9.9872 mL.
Mass of pycnometer when filled with water = 23.1148 g.
Mass of empty pycnometer = 13.1455 g.
So, mass of water = (23.1148 - 13.1455) g. = 9.9693 g.
We know that,
<em> Density = Mass / Volume = (9.9693 g.) / (9.9872 mL) = </em>0.998 g/mL.
<u>It is observed that the density of water is evaluated to be 0.998 g/mL. We know that, at 4℃ the density of water becomes maximum i.e. 1 g/mL. On the other hand the temperature at which the density of water is 0.998 g/mL is 0℃. Therefore, it can be concluded that the experiment was performed at a temperature of 0℃.</u>
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