Answer:
9
Explanation:
a significant number is a non zero number or exponent or a zero between numbers
There are three which are:
dispersion/london/van der vaals forces
dipole/dipole
hydrogen bonding
Light energy is a form of electromagnetic radiation. Light consists of photons, which are produced when an object's atoms heat up. Light travels in waves and is the only form of energy visible to the human eye.
Answer:
7.35 atm
Explanation:
From the question we are given;
- Initial volume, V1 as 28 L
- Initial temperature, T1 as 42°C or 315 K
- New volume. V2 as 49 L
- New temperature, T2 as 27°C or 300 K
- New Pressure, P2 as 4.0 atm
We are required to determine the initial pressure, P1
We are going to use the combined gas law...
According to the combined gas law,

Therefore, to get P1

We get;


Therefore, the initial pressure of the gas is 7.35 atm