With the help of your instructor, execute one or more of the following composition projects. Take great care in the preparation of your score and performance directions. Prepare a performance for class. Compose a short piece with a nontraditional score that features both graphic and proportional notation.

A central idea is an author's key message or insight. Reread the text, and take notes on ways in which Dubner develops a central idea.

How does the central idea of this text challenge people's customary thinking about perseverance? Cite textual details in your answer.

Which is NOT evidence that a chemical change has occurred? A. The properties of the substances involved in the reaction have changed. B. An odor is produced. C. The composition of the substances involved in the reaction have changed. D. The total mass of all substances involved has changed.

A biochemical test, in the microbiology world, is used to determine:

A) Capability of a microbe to perform a specific enzymatic activity.

B) Staining characteristics.

C) Nucleic acid-base composition of DNA sequences.

D) Amino acid sequences of enzymes.

E) All of the answers are correct.

Retail Amparo bought a jacket with a gift certificate she received as a birthday present. The jacket was marked 33% off, and the sales tax in her area is 5.5%. If she paid $45.95 for the jacket, use composition of functions to determine the original price of the jacket.

With the help of your instructor, execute one or more of the following composition projects. Take great care in the preparation of your score and prepare a performance for class. Compose a short piece that features extended tertian harmony—for example, ninth, eleventh, and thirteenth chords.

In 1987 the first substance to act as a superconductor at a temperature above that of liquid nitrogen $(77 \mathrm{~K})$ was discovered. The approximate formula of this substance is $\mathrm{YBa}_2 \mathrm{Cu}_3 \mathrm{O}_7$. Calculate the percent composition by mass of this material.

Determine the empirical and molecular formula for chrysotile asbestos. Chrysotile has the following percent composition: $28.03 \% \mathrm{Mg}, 21.60 \%$ Si, $1.16 \% \mathrm{H}$, and $49.21 \% \mathrm{O}$. The molar mass for chrysotile is $520.8 \mathrm{~g} / \mathrm{mol}$.

A low-melting $\mathrm{Sn}-\mathrm{Pb}-\mathrm{Cd}$ alloy called eutectic alloy is analyzed. The mole ratio of tin to lead is $2.73: 1.00$, and the mass ratio of lead to cadmium is $1.78: 1.00$. What is the mass percent composition of this alloy?

The mass of the first x meters of a thin rod is given by the function m(x) on the indicated interval. Find the linear mass density function for the rod. Based on what you find, briefly describe the composition of the rod. m(x)=4 grams for $0 \leq x \leq 2$

In Exercise given below, use f(x) and g(x) to find each composition. Identify its domain. Do not use a calculator. (a) $(f \circ g)(x) \quad$ (b) $(g \circ f)(x) \quad$ (c) $(f \circ f)(x)$

$$f(x)=2 x+1, \quad g(x)=4 x^3-5 x^2$$

A mixture of 1 kmol H2O and 1 kmol O2 at 400 K is heated to 3000 K, 200 kPa, in a steady-state process. Determine the equilibrium composition at the outlet of the heat exchanger, assuming that the mixture consists of H2O, H2, O2, and OH.

Determine the composition of each vanadium alloy. a. One-half of the V atoms are replaced by Cr atoms. b. One-fourth of the V atoms are replaced by Fe atoms. c. One-fourth of the V atoms are replaced by Cr atoms, and one-fourth of the V atoms are replaced by Fe atoms.

Write Lewis structures that obey the octet rule (duet rule for H) for each of the following molecules. Carbon is the central atom in $\mathrm{CH}_{4},$ nitrogen is the central atom in $\mathrm{NH}_{3},$ and oxygen is the central atom in $\mathrm{H}_{2} \mathrm{O}.$