Answer:
1. See explanation below
2. Density
3. Masses
Explanation:
1. Your picture is a bit too small to see the values but maybe this will help you.
To determine the maximum maximum mass in grams that triple beam balance can measure all you have to do is add up the maximum of each beam. So all you need to do is see the value at the last notch of each beam.
However, if you are referring to the picture that is attached in the bottom: The answer would be 610g. Because the last notches of each beam are as follows:
100 g
500 g
10 g
So we add that we get 610g.
2. density can be computed using the formula:
D = M/V
where:
D = density
M = mass
V = volume
As you can see in the both figures A and B measure 20 g, this means that their masses are the same. The density of objects can be different when either their masses, or their volumes are different. So even if they have the same mass, they can have different densities because they have different volumes.
3. Force of gravitational attraction between two objects is dependent on the masses of the two objects and the distance. The larger the mass, the stronger the gravitational force of attraction. This means that they have a direct relationship. Now when it comes to distance, the further apart they are the weaker the gravitational force of attraction, or in other words, they are indirectly related.
The given reaction is as follows:
2NO (g) + O₂ (g) = 2NO₂ (g), ΔH = -114 kJ
It is known that dSsurr = -dHsys / T (Temp = 355 K)
So, dSsurr = - (-114 × 1000) / 355
dSsurr = +321.12 J/K
Hence, the value of dSsurr is +321.12 J/K
For a reaction to be spontaneous, dG<0,
Also dStotal = dSsys + dSsurr > 0
It is known that dG = dHsys - TdSsys,
Now let us assume,
dG<0
Also, dStotal = dSsys + dSsurr > 0
(-114 × 1000) - (355 × dSsys) <0
355 × dSsys > -114 × 1000
dSsys > -321
dSsys >dSsurr
dSsys + dSsurr > 0
dStotal > 0
Thus, the assumption is correct, and the given reaction is spontaneous. Hence, the final answer is Ssurr = +321 J/K reaction is spontaneous.
When ketone is reacted with phosphorous pentachloride, chlorination takes place at the carbonyl carbon with substitution of the oxygen atom to give a geminal dichloride (with 2 Cl atoms on same carbon) according to the following equation:
so we can say that acetone is converted into 2,2-dichloropropane by action of PCl₅
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The answer is B. Equilibrium means a state in which opposing forces or influences are balanced.
Answer:
a.
Explanation:
At 28 degrees highest line is CaCl2. Answer a.