Answer:
18.28
Explanation:
Given:
Relation between the absorbance (y) and the concentration (x) as ;
y = 0.057x + 0.069
now,
we have to calculate concentration (x) for the given value of absorbance (y) = 1.111
thus, on substituting the value of y = 1.111 in the above relation, we get
1.111 = 0.057x + 0.069
or
x = 18.28
hence, the <u>value of concentration of sample is 18.28</u>
Answer:
single celled
Explanation:
because i asked a teacher
Answer:
2. have no negative particle
Explanation:
Helium atoms contains 2 neutrons and 2 protons (or 2 electrons). Thus, it has a mass number of 4 and atomic number of 2.
Alpha particles are heavy and positively charged, which make them to be deflected in a magnetic or electric charge. So, the helium atoms used as alpha particles for the gold foil experiment must have no negative particle.
