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Numbers above zero are significant, as well as any zeros that appear in between two non-zero numbers.
Rays having a wavelength greater than 400 nm (such as visible, infrared, radio waves, etc.) do not cause damage to the cell.
Ultraviolet (UV) radiation is electromagnetic radiation with a wavelength between 100 and 400 nm.
Ionizing radiation such as X and gamma rays also have a small wavelength (less than that of UV rays), and can penetrate the cell and cause damage to the cell.
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Answer:</h3>
Sodium
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Explanation:</h3>
- To answer the question we need to know a few things.
What are cations?
- Cations are positively charged ions that are formed when an atom of an element loses an electron(s).
What elements form cations?
- Metallic elements form cations since they react by losing electrons thus forming ions with a positive charge.
- For example, alkali metals such as sodium form cations with a charge of +1.
- In this case, sodium will form a cation with a charge of + 1, Na⁺
What are negatively charged ions?
- Negatively charged ions are known as anions.
- They are formed by non-metallic elements such as sulfur, argon, silicon, etc.
This problem is providing us with the mass (70 g), absorbed heat (96 J) and initial and final temperatures (293 K and 313 K, respectively) so the specific heat of the material is required and found to be 0.0686 J/(g*K) as shown below:
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Calorimetry:</h3>
In chemistry, we can go over calorimetry by writing the following relationship among heat, mass, specific heat and temperature change:
Thus, one can get the specific heat by solving for C in the previous equation:
Hence, we can plug in the given data to obtain:
Learn more about calorimetry: brainly.com/question/1407669