Tính pH của dung dịch sau khi trộn 100 ml dung dịch NaOH 0,1M với 100 ml dung dịch HNO2 0,2M. Biết pKHNO2 = 4,1.

Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.

List four observations that indicate that a chemical reaction may be taking place

What is the percent composition of ca(oh)2? 37.7% ca, 53.0% o, and 10.3% h 45.5% ca, 38.2% o, and 16.3% h 54.0% ca, 43.0% o, and 2.7% h 64.7% ca, 27.0% o, and 8.3% h