Answer:
8
Explanation:
1 copper atom has 29 protons so, 1
proton we can say has 1/29 copper atoms
then, 232 protons will make (1/29)×232 copper atoms which is equal to 8
Answer: <em>5.47177</em>
<em>For every Mile there is 1.60934 Kilometers</em>
<em>so we take 3.4 and multiply it by 1.60934</em>
<em />
<em>3.4 x 1.60934</em>
<em>= 5.47177 Km</em>
Answer:
<h2>Density = 3.9 g/ mL</h2>
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)
From the question
mass = 43 g
volume = 11.1 mL
Substitute the values into the above formula and solve for the density
That's
![Density = \frac{43}{11.1} \\ = 3.873873...](https://tex.z-dn.net/?f=Density%20%3D%20%20%5Cfrac%7B43%7D%7B11.1%7D%20%20%5C%5C%20%20%3D%203.873873...)
We have the final answer as
Density = 3.9 g/ mL to one decimal place
Hope this helps you
Answer: The process is endothermic and the heat of fusion is positive
Explanation:
All solids absorb heat as they melt to become liquids. The gain of heat in this endothermic process goes into changing the state rather than changing the temperature