Thuốc thử nào sau đây không nhận biết được KNO3 , K2SO4 đựng trong 2 lọ mất nhãn A Cu, HCl
B. Cr2O3, HCl
C. PeO, H2SO4 1 M
D. BaCl2

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

What is the value of keq for the reaction expressed in scientific notation

Asap! will give brainiest when a heat wave strikes a region causing more people to run air-conditioning units, electrical demand increases. what needs to be done to meet this increased demand? raising the control rodslowering the control rodsremoving the control rods