Final Exam 1-4

The statement, Matter is neither creater nor destoryed is called

All samples of a given compound, regardless of their source or how they were prepared, have the same proportions of their constituent elements. Which law does this refer to?

Which of the following is an example of the law of multiple proportions?

Calculate the atomic mass of element "X," if it has 2 naturally occurring isotopes with the following masses and natural abundances. X-45 44.8776 amu 32.88% X-47 46.9443 amu 67.12%

122 Given the element X 82 How many electrons does this element have? [blank_start]82[blank_end] How many protons? [blank_start]82[blank_end] How many neutrons? [blank_start]40[blank_end] What is the element? [blank_start]Pb[blank_end]

How many iron atoms are contained in 354 g of iron?

Determine the density of an object that has a mass of 149.8 g and displaces 12.1 mL of water when placed in a graduated cylinder.

What answer should be reported, with the correct number of significant figures, for the following calculation? (433.621 - 333.9) × 11.900

How many significant figures are in the measurement, 0.00049320 g?

Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of 6.88 × 1014 Hz.

Calculate the energy of the orange light emitted, per photon, by a neon sign with a frequency of 4.89 × 1014 Hz.

How many orbitals are contained in n=1 ([blank_start]1s[blank_end]), in n=2 ([blank_start]1s+3p[blank_end]), in n=3 ([blank_start]1s+3p+5d[blank_end]), in n=6 ([blank_start]1s+3p+5d+7f[blank_end])

Determine the energy change associated with the transition from n=2 to n=5 in the hydrogen atom.

Predict the charge of the ion formed from: Al [blank_start]3+[blank_end] Na [blank_start]1+[blank_end] Br [blank_start]1-[blank_end] Mg [blank_start]2+[blank_end] N [blank_start]3-[blank_end] O [blank_start]2-[blank_end] Ne [blank_start]won’t form ion[blank_end]

Predict the charge of the ion formed from: Al 3+ Na 1+ Br 1- Mg 2+ N 3- O 2- Ne won’t form ion Which of the above are metals? [blank_start]Al, Na, Mg[blank_end]

Write the electron configurations for: Se [blank_start]1s22s22p63s23p64s23d104p4[blank_end] Mn2+ [blank_start]1s22s22p63s23p64s03d5[blank_end] Fe2+ [blank_start]1s22s22p63s23p64s03d6[blank_end] S [blank_start]1s22s22p63s23p4[blank_end]

Give the number of core electrons and valence electrons for Se [blank_start]28/6[blank_end] and Sulfur [blank_start]10/6.[blank_end]

Write an orbital diagram for oxygen

No two electrons can have the same four quantum numbers is known as the

Only two electrons, with opposing spins, are allowed in each orbital is known as the

When filling degenerate orbitals, electrons fill them singly first, with parallel spins is known as

Place the following elements in order of increasing atomic radius P Ba Cl

Place the following in order of increasing radius Br⁻ Na⁺ Rb⁺

Write an reaction equation for the second electron affinity of oxygen

Write a reaction equation for the second ionization of magnesium

Place the following in order of increasing IE1. N F As

Place the following in order of decreasing metallic character.