C.) hypothesis
A hypothesis is a prediction scientists make based on observations. This hypothesis is tested to find out if it is correct or incorrect. A conclusion is the result of an experiment. The evidence is what proved the hypothesis to be correct or incorrect. Verification uses the data to confirm the justification of the hypothesis.
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Answer:
Energy required is 4.147 kj.
Explanation:
Given data:
Mass of ice = 12.4 g
Temperature = 0°C
Molar heat fusion for ice = 6.02 kj/mol
Energy required to melt = ?
Solution:
Formula:
q = n ×ΔH
q = heat
n = number of moles
ΔH = enthalpy
First of all we will calculate the number of moles.
Number of moles = mass/ molar mass
Number of moles = 12.4 g/ 18 g/mol
Number of moles = 0.69 mol
Now we will put the values in formula.
q = n × ΔH
q = 0.69 mol × 6.02 kj/mol
q = 4.147 kj
Answer:
how does gravity affect something
Explanation:
they study physics.
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Answer:
The answer is B. A river is a body of water, therefore, there will always be some water running over the rock.
Answer:
For generating electricity, there must be a power source present and a total circuit. In order to generate electricity from citcrus fruit circuit, it is necessary to have materials like wire, a small bulb, lemon fruit, and two metal elements. The power source in this circuit is the lemon fruit. The metals that are taken here in this experiment are zinc and copper.
Explanation: