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Calculate the atomic weight (in amu) of an element (X) given the following data: : 24.000 amu at 0.7870 fractional abundance : 26.000 amu at 0.1017 fractional abundance : 25.000 amu at 0.1113 fractional abundance

12 years ago

How many atoms are in 10.0 cm3 of mercury (at room temperature)?

12 years ago

A photon with a wavelength (λ) of 3.091 x 10–7 m strikes an atom of hydrogen. Determine the velocity (in meters/second) of an electron ejected from the excited state, n = 3.

12 years ago

Determine the minimum electric potential difference (in volts) that must be applied to accelerate an α-particle so that on interaction with a hydrogen atom, a ground state electron will be excited to n = 6.

12 years ago

Calculate the wavelength, λ, in meters of a photon capable of exciting an electron in from the ground state to n = 4.

12 years ago

How many of the following electron configurations are allowed? 1s22s22p7 1s22s22p62d1 [Ne]4s24p4 [Ar]3d64s2 1s22s22p83s23p4

12 years ago

Which atom or ion would you expect to have the smallest radius? Ne F- Na+ Ne-

12 years ago

Calculate the wavelength of a photon with energy 2.45 eV.

12 years ago

Use molecular orbital theory to predict whether the bond order in the superoxide ion, O2-, should be higher or lower than the bond order in neutral O2 molecule. Is the bond order of O2- higer or lower than that of O2?

12 years ago

Construct the correct structure for AsClF42-. You can begin by selecting an option from the menu on the right, then by filling in atoms and electron pairs (ep, if any) into the appropriate locations. Please construct the molecule such that the dipole is o...

12 years ago

Carbon reacts with chlorine and hydrogen to form the compound CH3Cl. (a) Construct the structure of CH3Cl.

12 years ago

What is the dominant form of secondary bonding for CH3Cl? Dipole-dipole interactions London dispersion forces Covalent bonding Ionic bonding

12 years ago

Which of the following combinations of atomic orbitals can combine to form sigma bonds? s-ss-pp-phybrid orbital - hybrid orbitalhybrid orbital - shybrid orbital - p What is the bond angle (in degrees) resulting from sp hybridization? What is the bond angl...

12 years ago

Construct the correct structure for AsClF42-. Please construct the molecule such that the dipole is oriented vertically up or vertically down. - Name the type of hybrid orbitals the central atom forms. - Name the molecular geometry of the compound. - Stat...

12 years ago

Rank the following 3 compounds in terms of increasing boiling point: CCl4, CH4, CH2Cl2 - Rank the following 3 compounds in terms of increasing boiling point: CF4, CH4, CH2F2 - Water, H2O, is a liquid at room temperature. Hydrogen selenide, H2Se, is a homo...

12 years ago

Carbon reacts with chlorine and hydrogen to form the compound CH3Cl. (a) Construct the structure of CH3Cl. What is the dominant form of secondary bonding for CH3Cl? Dipole-dipole interactions, London dispersion forces, Covalent bonding, Ionic bonding

12 years ago

You wish to make n-type silicon. Select all suitable dopant atoms from the following list:P, B, Mg, Ga, As, In, Sb, Al, Tl, H

12 years ago

what is the crystal system of the crystal structure of cesium chloride

12 years ago

Calculate the lattice constant in palladium . Use only the information available in the class Periodic Table, and express your answer in angstroms.

12 years ago

At 10°C below the melting point of aluminum, 0.08% of the atom sites are vacant. At 484°C only 0.01% are vacant. Given this information, determine the energy of vacancy formation (ΔHv) for aluminum. Energy of vacancy formation (in joules / vacancy):

12 years ago

Determine the radius of the largest atom that can be accommodated in the interstices of BCC iron (Fe) without stress. (Hint: the center of the largest site is at ½, ¼, 0; draw a unit cell - it helps.) Radius (in centimeters):

12 years ago

An activationenergy of 2.0 eV is required to form a vacancy in a metal. At 800°C there is one vacancy for every 10-4 atoms. At what temperature will there be one vacancy for every 1000 atoms? Temperature (in degrees Kelvin): unanswered

12 years ago

Determine the radius of the largest atom that can be accommodated in the interstices of BCC iron (Fe) without stress. (Hint: the center of the largest site is at ½, ¼, 0; draw a unit cell - it helps.)

12 years ago

A fair die is rolled three times. Find the chance that three different faces appear.

12 years ago

I toss a coin 4 times. Find the chance of getting the sequence HTHT

12 years ago

Calculate the density of atoms in (001) in lithium (Li). Express your answer in units of atoms/cm2. incorrect

12 years ago

I Response Any Thing what You Do

4 years ago