Solid state Questions and Answers

Iron sulfide has a _ melting and boiling points. fixed variable fixed and variable, respectively fixed or variable

Which of the following is an example of a solid? Iron rod Ice Diamond All of the choices

What are the typical properties of substances held together with ionic bonds, such as NCCI? they have high melting points when dissoved in water, ionic compounds conduct electricity they have low melting points they do NOT conduct heat nor electricity when in solution they do not dissolve in water they form crystals they dissolve in water (dissolve means ions can break away from the crystal and move freely within the solution) they form amorphous solids

Nitrogen has two isotopes. One has an atomic mass of 14.003 amu and a relative abundance of 99.63% while the other isotope has an atomic mass of 15.000 amu and a relative abundance of 0.37%. What is the average atomic mass for nitrogen? a. 14.993 amu b. 14.778 amu c. 14.007 amu d. 14.456 amu

The atomic radius of metal X is 1.30 x 102 picometers (pm) and a crystal of metal X has a unit cell that is face-centered cubic. Calculate the density of metal X (atomic weight = 42.3 g/mol).

5) A gas sample occupies 3.50 liters of volume at 20. °C. What volume will this gas occupy at 100°C (reported to three significant figures)? A) 0.224 L B) 2.75 L C) 4.46 L D) 17.5 L E) none of the above

Choose the sentence that is capitalized correctly. The meaning of Stonehenge was first discussed around 1139 in the book History of the Kings of Britain. The meaning of stonehenge was first discussed around 1139 in the book "History of the Kings of Britain." The meaning of Stonehenge was first discussed around 1139 in the book "History of the kings of britain."

Identify the definition for each of the terms. coordination number: unit cell: crystalline solid: Answer Bank the smallest dimensions of a crystal that can be measured with a microscope the number of atoms (or ions) bordering a cavity (or interstice) in a crystal lattice a solid that lacks a regular, three-dimensional arrangement of atoms (e.g., glass) the basic repeating structural unit of a crystalline solid a solid that possesses long-range order (e.g., table salt) the number of atoms (or ions) surrounding an atom (or ion) in a crystal lattice

Germanium is doped with 5 x 1015 donor atoms per cm³ at T = 300 K. The dimen- sions of the Hall device are d = 5 x 10³ cm, W = 2 x 102 cm, and L = 10-¹ 10¹ cm. The current is I, = 250 μA, the applied voltage is V, = 100 mV, and the magnetic flux density is B₂ = 500 gauss = 5 x 10-2 tesla. Calculate: (a) the Hall voltage, (b) the Hall field, and (c) the carrier mobility.

A student thinks that 1s³ is the electron configuration for lithium. They also thinks that 1s4 is the electron configuration for beryllium. Write a brief note to the student that explains why they are incorrect.

The reaction of rubidium with iodine is similar to that of sodium with iodine. Write the balanced chemical equation for the reaction of rubidium with iodine. Include phase symbols. chemical equation:

Imagine you are handed a mineral sample. It breaks with a conchoidal fracture but displays no cleavage. It does not react with hydrochloric acid, is a light pink color, and has a nonmetallic luster. It is harder than a streak plate, and has a specific gravity of 2.65. What mineral is it? quartz potassium feldspar olivine calcite

Which phrase describes radioactive decay? the splitting of a large nucleus into smaller nuclei the spontaneous emission of radiation the joining of small nuclei into a larger nucleus the triggering of one reaction by the products of another

Copper crystallizes in the body-centered cubic unit cell with an edge length 390 pm. What is he density of Copper in g/cm3? (atomic weight of copper = 63.45 amu) A. 3.56 g/cm³ B. 3.90 g/cm³ C. 1.78 g/cm³ D.4.65 g/cm³ E. 7.12 g/cm³

When silicon is doped with antimony, antimony contributes __ lons holes free electrons charges

Which of the following is not a characteristic of the solid state? particles are moving very fast has a definite shape particles are in fixed positions has a definite volume particles are close together