Answer:
C. sea water
Explanation: basically when you see words that look like someone sneezed and whatever they managed to type (example: Copernicium) just go ahead and eliminate it when it comes to mixtures. Distilled water was there to trick you. Always look for the distilled part, that means it is pure, and therefore not a mixture.
Answer:
The heat of reaction is 4938 kJ/mole
Explanation:
It is possible to calculate the heat of a reaction using:
For the reaction:
C₁₂H₂₂O₁₁ (s) + 12 O₂ (g) → 12 CO₂ (g) + 11 H₂O (l)
Specific heat: 7,50kJ/°C
dT = 20,2°C
Thus, q = 151,5 kJ
The moles of sucrose are: 10,5g /342,2965 g/mol = 0,030675 moles
The heat of reacton is:
I hope it helps!
Answer:
4.46 °C
Explanation:
Step 1: Given and required data
- Energy absorbed (Q): 4430 J
- Specific heat of water (c): 4.186 J/g.°C
Step 2: Calculate the temperature change
We will use the following expression.
Q = c × m × ΔT
ΔT = Q / c × m
ΔT = 4430 J / (4.186 J/g.°C) × 237 g
ΔT = 4.46 °C
The temperature change is 4.46 °C.
Holes in volcanic rocks illustrates a low pressure and rapid cooling environment(surface of the earth).
Explanation:
Holes in rocks are usually found in a special type of volcanic rock called pumice. The holes signifies a melt that has a lot of dissolved gases in them and they solidify rapid under surface temperature.
- Pockets of holes found in some rocks are as a result of trapped gases in cavities of a solidifying magma.
- The magma must erupt explosively so that the gases will not have enough time to escape.
- During an extrusive magma activity, the low pressure allows for dissolved gases to collects in cavities and magma cools rapidly around them due to the low surface temperature.
- The cavities left behind when the gases escape is the hole formed in volcanic rocks.
Learn more:
volcanic eruptions brainly.com/question/1820994
lava volcanic dome brainly.com/question/12426233
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