Answer:
8.90
Explanation:
Density = mass ÷ volume
D = 222.50 g ÷ 25.00
= 8.9
The density of the unknown metal is 8.90.
Hope that helps.
Answer:
Sounds like Wikipedia would be a good place to start for most of this information.
Answer:
Water acutually has a higher boiling point because CO2 will turn into a gas form at a certain temp ( -78 C), so CO2 wouldn't really boil very long.
Hope this helps:)
Answer:
B
Explanation:
They lose energy and slow down and move closer to other gas molecules and the molecules collect together to form a liquid
If the half-life is 8.0 hours and there are 24 hours in a day, the radioisotope reaches its half-life 3 times.
Therefore, after a full day, there are 24 g of the sample left, and 168 g has decayed.