1mol ------------ 3×6,02×10²³ oxygen atoms
x ------------ 2,55×10²⁴
x = 2,5×10²⁴ × 1mol / 3×6,02×10²³ ≈ 0,138*10 mol = 1,38mol
Answer:
Physical properties are used to observe and describe matter. Physical properties can be observed or measured without changing the composition of matter. These are properties such as mass, weight, volume, and density.
Answer:
A. Increasing the temperature of a chemical reaction speeds up the reaction rate.
Explanation:
The higher the temperature is, the faster a chemical reaction will happen. Food rots slower in refrigerators because it is cold, outside, they rot faster.
black peppered moths have higher survival rate
Explanation:
i believe black peppered moths would survive at a higer rate than white moths. black peppered moths could blend with the environment while white moths would stick out and make its self more vulnerable to predators.