Answer:
Enthalpy of solution is 583.67 J
Explanation:
The mass of water is 143 g
The mass of NaCl added = 12g
Total mass of solution will be = 
The specific heat of solution = specific heat of water = 4.184 J /g °C
The initial temperature = 22.5°C
Final temperature =21.6°
The change in temperature = 
The enthalpy of solution will be equal to the heat change in the solution.
The heat change of solution will be calculated as:
Thus the enthalpy of solution is 583.67 J (Endothermic reaction)
Answer:
0.21 kg
Step-by-step explanation:
Volume of cola = 2.0 L × (33.8 fl oz/1L)
= 67.6 fl oz
Grams of sugar = 67.6 fl oz × (25 g sugar/8.0 fl oz)
= 210 g sugar
Kilograms of sugar = 210 g × (1 kg/1000 g)
= 0.21 kg
They are all examples of chemical formulas
B. Another team of scientists must be able to replicate the results of
the experiment.
Explanation:
Scientists follow due scientific processes in supporting a claim. This process is known as scientific method. A scientific method is a procedural way of investigating an observation. It entails:
- careful observation and measurement
- detailed experiment
- the formulation, testing, and modification of hypotheses
Through this, when a finding is made, before it can be acceptable by the scientific community, it must be tested through a series of experiments by other scientist. These scientists will also test for the validity of the claim that a new element has been discovered.
Learn more:
Experiment brainly.com/question/5096428
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They usually get it from an old well they dug up and have a pump and strainer that go to their house.
