Which of the following illustrates a single replacement reaction?
O A 2Fe +3872 → 2FeBrz
O B. Ba(NO3)2 + NISO4 → Baso, Ni(NO3)2
O C. CaCl2 + Na2CO3 → CaCo3 + 2NaCl
O D. Fe + CuSO4 → Cu + FeSO4
SUBMIT
Apound is approximately 0.45 kilogram. a persons weighs 87 kilograms. what is the persons’s weight, in pounds, when expressed to the correct number of significant figures