I'm pretty sure that it's either 83.2% or 91.4%
Answer:
Explanation:
The mass of radioactive isotope at a certain time is given by the following expression:
Time constant can be calculed in terms of half-life:
The initial mass is:
Answer:
It can be very dangerous and possibly deadly to mix bleach and ammonia.
Explanation:
When you combine these two household cleaners they release toxic chloramine gas. If you are exposed to chloramine gas it may cause irritation in your eyes, nose, throat, and lungs. It can even lead to coma and death in higher concentrations.
Answer:
Number of molecules = 2.61 x 10²³
Explanation:
Given:
Volume of tetra-chloride = 42 ml
Density = 1.59 g/ml
Find:
Number of molecules
Computation:
Mass = Volume of tetra-chloride x Density
Mass = 42 x 1.59
Mass = 66.78
Molecular mass of tetra-chloride = 154 g/mol
Moles = 66.78 / 154
Moles = 0.4337
0.4337 mole = 0.4337 x Avogadro number
0.4337 mole = 0.4337 x 6.022 x 10²³
Number of molecules = 2.61 x 10²³
Answer:
Sodium Chloride is salt
Explanation:
Basically, its used to help absorb and transport nutrients, its also used to help blood pressure along with maintaining the right balance of fluid. These will all be helpful to our bodies and environment.
