Color
Explanation:
Only color out of the listed observations is the qualitative observation. Qualitative observations are usually carried out using our senses.
- Sense of touch makes us feel the texture of particular subject.
- Sense of smell gives different types of scents and odors.
- Sense of sight helps us to identify different colors and appearances in a study.
- Sense of taste helps to know if something is bitter, sweet or sour.
- Sense of hearing helps to know how audible something it.
Qualitative observations does not involve the use of numbers.
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The correct answer is A, since it is the only sensible answer.
Hi there I believe it’s 18 please let me know if I’m wrong :)
Answer:
K, the rate constant = 9.73 × 10^(-1)/s
Explanation:
r = K × [A]^x × [B]^y
r = Rate = 1.07 × 10^(-1)/s
K = Rate constant
A and B = Concentration in mol/dm^-3
A = 0.44M
B = 0.11M
x = Order of reaction with respect to A = 0
y = Order of reaction with respect to B = 1
Solving, we get
r/([A]^x × [B]^y) = K
K = 1.07 × 10^(-1)/s/(0.44^0 × 0.11^1)= 0.9727
K = 0.9727
1) Evaporization is phase change process in which the water changes from a liquid to a gas (water vapor). Solar radiation is the source of energy for evaporation.
2) Condensation is phase change process in which the water changes from a gas to a liquid, the vapor becomes a cloud.
3) Precipitation is falling of the condensed water vapor as rain, snow, fog drip.
The water cycle (hydrological cycle) is the continuous movement of water all around the Earth.
