Atomic radius of copper atom (r)= 128 pm
volume of sphere = 4/3 * pi * r^3 = 4/3 * 3.14 * 128^3
volume = 8780076.373 pm^3
Answer: Group 1 Alkali Metals
Explanation: Alkali metals are good conductor of heat and electricity they also have the least amount of valence electron which is +1
Answer:
Sift the mixture to separate the rock from the iron filings, soil and salt.
You can then use a magnet to separate the iron filings from the salt and soil.
Afterwards, you can pour water into the remaining salt- soil mixture. Salt will dissolve but the soil will remain at the bottom of the water.
If you want to separate the salt from the water, you can boil it till all the water evaporates. The only thing that'd be left in the pan is salt.
Answer: 7.826 x 10^23 molecules
Explanation: 1 mole of NaOH is equal to 40 g, so we can start setting up the equation by saying that 52 g NaOH= 1 mole/40 g. Since one mole= 6.02 x 10^23 representative particles, or molecules, the next step in the equation is to multiply by 6.02 x 10^23/1 mole NaOH. The final equation comes out to be:
52 g NaOH = 1 mole/40g x 6.02 x 10^23/1 mole NaOH = __molecules NaOH
Now all that's left to do is to multiply across the top and divide by the bottom!
Answer:
The Awnser Is A. 0.325 Liters
Explanation: