Answer:
the ans
Explanation:
Sodium + chlorine → sodium chloride
The balanced chemical equation:
2Na + Cl2 → 2NaCl
According to the equation above: n(Na) = n(NaCl)
Moles of Na = Mass of Na / Molar mass of Na
The molar mass of Na is 22.9898 g mol-1.
Hence,
n(Na) = 86.33 g / 22.9898 g mol-1 = 3.755 mol
n(NaCl) = n(Na) = 3.755 mol
Moles of NaCl = Mass of NaCl / Molar mass of NaCl
Mass of NaCl = Moles of NaCl × Molar mass of NaCl
The molar mass of NaCl is 58.44 g mol-1.
Hence,
m(NaCl) = 3.755 mol × 58.44 g mol-1 = 219.44 g
m(NaCl) = 219.44 g
OR:
(86.33 g Na)×(1 mol Na/22.9898 g Na)×(2 mol NaCl/2 mol Na)×(58.44 g NaCl/1 mol NaCl) = 219.45 g
Answer: 219.44 grams (or 3.755 mol) of sodium chloride (NaCl) will be produced.
Hello! So to answer your question all the answers can be found within the above chart provided. Simply compare and contrast the pH levels in which the indicators changed color.
So doing that we can conclude the followoing pertaining to our indicators. Bromothymol blue 5.3-7.3
Methyl yellow 2.4-4.3
Bromocresol green 3.3-5.3
Red cabbage extract 3.3-5.3
For your second question it is the exact same concept, but we can just look at our answer for the first question to conclude which indicator would be best used for those ph levels.
Comparing and contrasting we can see that the best indicator to use for observing PH changes around pH= 2 would be Methyl yellow,
for around pH=4 would be Bromocrescol green,
and for pH= 6 it would be Bromothymol blue.
If you have any other questions or would like further explanation just let me know! :)
Answer:
2260 J
Explanation:
For water at its boiling point of 100 ºC, the heat of vaporization is 2260 J g-1. This means that to convert 1 g of water at 100 ºC to 1 g of steam at 100 ºC, 2260 J of heat must be absorbed by the water.
Answer:
Most likely burning coal produces silver dioxide with can cause acid rain
Explanation:
Only one answer comes with a negative consequence. All the others are either
1. Explaining the benefits of coal, such as it producing more heat
2. Stating that there is more coal than any other natural resource
3. Coal being more convenient
<span>The state of matter in which particles are closest together is a solid. This is most easily described by thinking of it in terms of the solid being formed into a particular fixed shape, made possible by the fact the particles are packed tightly, whereas say, a liquid, has loosely packed particles and is free to flow and move (even looser in the case of gases and plasmas)</span>