What’s the difference in concentration of hydronium Ions between pH1 and pH4? a) x 2.6

b) x 1000

c) x 4

d) x 10

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

Natalie had random hand movements when she was two months old. when she was six months old, she used to grab a block with her whole hand. now at the age of ten months, she can grasp the same block with her thumb and forefinger. this sequence of growth in her hand and finger movements is according to the pattern.

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error?