In science, a model is a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly. Models are central to what scientists do, both in their research as well as when communicating their explanations.
Models have a variety of uses – from providing a way of explaining complex data to presenting as a hypothesis. There may be more than one model proposed by scientists to explain or predict what might happen in particular circumstances. Often scientists will argue about the ‘rightness’ of their model, and in the process, the model will evolve or be rejected. Consequently, models are central to the process of knowledge-building in science and demonstrate how science knowledge is tentative.
You could look at it this way.
1 mole of solution = 0.132 of NaCl + x
1 - 0.132 = 0.868 mols of water.
answer: 0.868 <<<< answer
59.78175 kPa is the pressure inside the container when a cylinder at 48.0 atm pressure and 17.0°C releases 35.0 mL of carbon dioxide gas into a 4.00 L container at 24.0°C.
<h3>What is an ideal gas equation?</h3>
An ideal gas equation states the relationship between the moles of the substance, temperature, pressure, and volume. The ideal gas equation is given as, PV=nRT
Given data:
=48.0 atm
=3T_1=17.0°C
=?
=4.00 L
=24.0°C
= 
= 0.59 atm = 59.78175 kPa
Hence, 59.78175 kPa is the pressure inside the container when a cylinder at 48.0 atm pressure and 17.0°C releases 35.0 mL of carbon dioxide gas into a 4.00 L container at 24.0°C.
Learn more about the ideal gas equation here:
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Sn2+
Your protons equal the atomic number of an element: Sn (Tin).
The amount of protons and electrons will be the same if the atom is neutral. In this case, tin has lost two electrons and so tin is no longer neutral and becomes Sn2+
To double check, you would subtract the atomic number from the mass number of tin to see if the number of neutrons is equal to what has been provided.
mass number - atomic number = number of neutrons
118 - 50 = 68
Answer:
Potable water is the water which is filtered and treated properly and is finally free from all the contaminants and harmful bacteria. ... Water is purified by various processes, some of these are by using UV filtered water purifier, by reverse osmosis, etc.
Explanation:
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