Answer:
Angle and number should be the correct answer
Explanation:
prove me wrong
Answer:
790 years
Explanation:
Given that;
0.693/t1/2 = 2.303/t log [A]o/[A]
So;
t1/2 =half life of carbon-14
t= age of the sample
[A]o= activity of the living sampoke
[A] = activity at time t
0.693/5.73 ×10^3 = 2.303/t log 85/77
1.21 × 10^-4 = 2.303/t log 1.1
1.21 × 10^-4 = 0.0953/t
t= 0.0953/1.21 × 10^-4
t= 790 years (to 2sf)
atom x is sodium and then the atom y is chlorine
Answer:
double layered vacuum seal as the thermal insulators to make a liuqid hot when it cold and keep it cold when its hot.
Explanation:
