CA FOR SUBJE DATE FEI 16) 12) 13) 14) 15) Which of the following substances should...

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CA FOR SUBJE DATE FEI 16) 12) 13) 14) 15) Which of the following substances should have the highest melting point? a) CO₂ b) Xe c) F2 d) MgO One mole of CO₂ contains the following number of moles of oxygen atoms: a) 32 mol b) 2 mol c) 0.50 mol d) 6.02 x 1023 mol How many atoms are in 36 grams of carbon? a) 1.8 X 1023 atoms b) 2.2 X 1025 atoms c) 1.8 X 1024 atoms d) 2.0 X 1023 atoms Calculate the atomic mass of element "X", if it has 2 naturally occurring isotopes with the following masses and natural abundances: X-45 X-47 a) 46.26 amu b) 45.91 amu c) 46.34 amu d) 46.84 amu 3 44.8776 amu 46.9443 amu c) 0.820 kg d) 0.280 kg 32.88% 67.12% What mass (in kg) does 5.84 moles of titanium (Ti) have? a) 0.352 kg b) 0.122 kg CA FOR SUBJE DATE FEI 16) 12) 13) 14) 15) Which of the following substances should have the highest melting point? a) CO₂ b) Xe c) F2 d) MgO One mole of CO₂ contains the following number of moles of oxygen atoms: a) 32 mol b) 2 mol c) 0.50 mol d) 6.02 x 1023 mol How many atoms are in 36 grams of carbon? a) 1.8 X 1023 atoms b) 2.2 X 1025 atoms c) 1.8 X 1024 atoms d) 2.0 X 1023 atoms Calculate the atomic mass of element "X", if it has 2 naturally occurring isotopes with the following masses and natural abundances: X-45 X-47 a) 46.26 amu b) 45.91 amu c) 46.34 amu d) 46.84 amu 3 44.8776 amu 46.9443 amu c) 0.820 kg d) 0.280 kg 32.88% 67.12% What mass (in kg) does 5.84 moles of titanium (Ti) have? a) 0.352 kg b) 0.122 kg

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