Answer:
What does ppm mean? This is an abbreviation for "parts per million" and it also can be expressed as milligrams per liter (mg/L). This measurement is the mass of a chemical or contaminate per unit volume of water. Seeing ppm or mg/L on a lab report means the same thing.
that is all i have to say.
If they're different sizes and densities, you are able to separate the substances.
Answer:
Option B - 2
Explanation:
In Crystal lattices, there are different types of unit cells namely;
- Hexagonal Closest Packed (HCP)
- Face Centred Cubic (FCC)
- Body Centred Cubic (BCC)
- Simple Centred Cubic (SC)
Now, each of them have a coordination number and also number of atoms per unit cell.
For this question, we are restricted to the body-centered cubic (bcc) unit cell which has a coordination number of 8 and contains 2 atoms per unit cell.
Answer:
Explanation:
Given that,
The volume of a sample of gas measured at 27 °C is 10.0 dm.
We need to find the temperature when the volume is reduced to 9.0 dm at the same pressure.
According Charles law,
Where, T₂ is new temperature
So, the new temperature is 
.
