Which of the following is true for an atom which has 29 protons, 34 neutrons and 29 electrons?
atomic number mass number
a. 29 34
b. 29 63
c. 34 63
d 34 29

Here’s one way to follow the scientific method. place the missing steps in the correct position in the process

What type of organic molecule comprises the majority of a potato?

6) (a) calculate the absorbance of the solution if its concentration is 0.0278 m and its molar extinction coefficient is 35.9 l/(mol cm). the depth of the cell is 5 mm. (b) what is the %t? (7) calculate the absorbance of the solution if the transmitted light intensity is 70% of the initial light beam intensity