The atomic mass of helium is 4.0026 u. What is the mass of a helium sample that contains 0.427 moles of He gas?
A) 0.427 g
B) 0.107 g
C) 1.71 g
D) 2.57 g
E) 9.37 g
Correct Answer:
Verified
Q4: The atomic mass of C is 12.011
Q5: The atomic mass of Mg is 24.305
Q6: The atomic mass of aluminum is 26.982
Q7: The atomic mass of chromium is 51.996
Q8: The atomic mass of cobalt is 58.933
Q10: The atomic mass of cobalt is 58.993
Q11: The atomic mass of boron is 10.811
Q12: The atomic mass of phosphorus is 30.974
Q13: The molar mass of Co(NH3)6(ClO4)3 is
A)318.53 u.
B)389.43
Q14: The molar mass of C14H28(COOH)2 is
A)242.40 u.
B)254.41
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