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

Which set of coefficients will balance the equation below? NaOH + Cu (NO3) 2 Cu (OH) 2 + NaNO3 A) 1, 1, 1, 1 B) 1, 2, 2, 1 C) 2, 1, 2, 1 D) 2, 1, 1, 2

Which type of heat transfer causes a person sitting by the fire to feel warm

It is essentially a non-electrolyte a. HBr (aq) b. NH₃ (aq) c. H₂O (l) d. HF (aq) e. H₂CO₃ (aq)

If you have 200 mL of a 2 M NaCl solution, how many mL of a 0.5 M NaCl solution can you make?

Which of the following would be a result of increased solar activity? A. Longer winters B. Warmer-than-normal sea surface temperatures C. Colder-than-normal sea surface temperatures D. Shorter summers

Using the relative E0 values determine which of the following reactions are electrically possible. Mg (s) + Br2 (I) ⟶ MgBr2 Choose the answer from the parenthesis.

3 x 1023 molecules of element Z have a mass of 38 g. What is the mass of 1 mole?

Which type of element has an electron configuration of 1s22s22p63s23p64s1? Question 1 options: alkali metal alkaline earth metal noble gas halogen

Litus paper turns red at pHs below 6 and blue at pHs above 8. When you dip litmus paper into a glass of cold orange juice, it turns red. When you dip it into ammonia, it turns blue. If you dip litmus paper into water, it doesn't change color.

Which one of the following will show the Tyndall Effect? a. fog b. water c. olive oil d. oxygen gas