CHEM 1AL FINAL EXAM STUDYGUIDE EXAM WITH CORRECT ACTUAL QUESTIONS AND CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY GRADED A+

CHEM 1AL FINAL EXAM STUDYGUIDE
EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+




1. How many significant figures are in 0.004560?


A. 2
B. 3
C. 4
D. 5
Answer: C


Explanation: Leading zeros are not significant; 4, 5, 6,
and trailing 0 are significant.

,2. Convert 25°C to Kelvin.


A. 250 K
B. 298 K
C. 300 K
D. 273 K
Answer: B


Explanation: 25 + 273 = 298 K


3. What is the molar mass of water (H₂O)?


A. 16.00 g/mol
B. 18.02 g/mol
C. 20.00 g/mol
D. 22.00 g/mol
Answer: B


4. How many moles are in 36 g of water?

, A. 1 mol
B. 1.5 mol
C. 2 mol
D. 3 mol
Answer: C


5. What type of bond forms between Na and Cl?


A. Covalent
B. Metallic
C. Ionic
D. Hydrogen
Answer: C


6. Which element is most electronegative?


A. Oxygen
B. Chlorine