Cations (positively-charged ions) and anions (negatively-charged ions) are formed when a metal loses electrons, and a nonmetal gains those electrons. The electrostatic attraction between the positives and negatives brings the particles together and creates an ionic compound, such as sodium chloride
<span>A reaction which needs to gives off energy to complete the chemical reactions is called an EXOTHERMIC reaction !!</span>
according to the internet it's 3
Answer:
<h3>The answer is 2.70 g/mL</h3>
Explanation:
The density of a substance can be found by using the formula
![density = \frac{mass}{volume} \\](https://tex.z-dn.net/?f=density%20%3D%20%20%5Cfrac%7Bmass%7D%7Bvolume%7D%20%5C%5C)
From the question
mass = 4.86 g
volume = final volume of water - initial volume of water
volume = 17.3 - 15.5 = 1.8 mL
So we have
![density = \frac{4.86}{1.80} \\](https://tex.z-dn.net/?f=density%20%3D%20%20%5Cfrac%7B4.86%7D%7B1.80%7D%20%20%5C%5C%20)
We have the final answer as
<h3>2.70 g/mL</h3>
Hope this helps you