Phân biệt 4 chất lỏng

H²O, HCL, H²SO⁴,HNO³

Complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 0

Draw metallic bonding if two copper

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.