Which of the following reactions is not a replacement reaction?

Fe + CuSO4 → FeSO4 + Cu

2Na + 2H2O → 2NaOH + H2

Zn + 2HCl → ZnCl2 + H2

2Na + Cl2 → 2NaCl

What is the mass in grams of 300 mL of salt water with a density of 1.30 g/cm^3

How many ml of 2.50 M NaOH solution are required to make a 525 mL of 0.150 M?

A compound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (N) and 69.6% oxygen (O). What is its molecular formula? A. N2O4 B. NO2 C. N2O D. N4O2

In Part A, we saw that the theoretical yield of aluminum oxide is 0.800 mol. Calculate the percent yield if the actual yield of aluminum oxide is 0.456 mol.

Easy way chlorine exists mainly as two isotopes 37cl and 35cl which is more abundant

What is the enthaply of the reaction?

Which color has a higher frequency, A. red light B. blue light

what is the volume of 0.98 mol oxygen (O2) gas at 275 K and a pressure of 2.0 atm? (the universal gas constant is 0.0821 L*atm/mol*K)

Which element is classified as an alkali metal? Rb Sr Zr Cl

Which statements about a neutral atom are correct? Check all that apply. The positively charged particles in the nucleus are positrons. The radius of the electron cloud is twice as large as the radius of the nucleus.