Which one shows energy being transformed? *pick one

• open flame heating a pan of water
• plant using sunlight to create glucose
• turning on a flashlight to make a beam of light
• rubbing hands to create warmth

What’s the scientific notation for the number 6,840,000,000

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

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