Which equation correctly represents the reaction between elemental chlorine and sodium iodide?
A) Cl + NaI I + NaCl
B) Cl- + NaI I- + NaCl
C) Cl2 + 2NaI I2 + 2NaCl
D) Cl + NaI 1/2 I2 + NaCl
E) Cl2 + NaI NaCl2 + I-
Question 2
The VSEPR model predicts the HOH bond angle in H3O+ to be
A) 60.
B) 90.
C) less than 109.5 but greater than 90.
D) 109.5.
Question 3
The urine is a good indicator of hydration. What does urine look like if one is properly hydrated?
A) clear and colorless
B) pale yellow
C) cloudy
D) bright yellow