Show that the change-making problem (Exercise 6.17) can be formulated as an integer

Chemistry 11
Tin(II) fluoride (\(\mathrm{SnF}_{2}\)) is often added to toothpaste as an ingredient to prevent tooth decay. What is the mass of F in grams in 24.6 g of the compound?

Anatomy & Physiology 1
Iodide ions cross from the bloodstream into follicle cells via ________. a. simple diffusion b. facilitated diffusion c. active transport d. osmosis

Campbell Biology: Concepts & Connections 7
Neurons communicate at synapses. The transmission of signals between neurons or between neurons and effector cells occurs at junctions called synapses. At electrical synapses, electrical signals pass directly between cells. At chemical synapses, the sending (presynaptic) cell secretes a chemical sign

Concepts of Biology 1
Protists with the capabilities to absorb nutrients from dead organisms are called_____________. a. photoautotrophs b. autotrophs c. saprobes d. heterotrophs

Urban Economics 8
The 19th century brought many changes in commuting, from walking to omni- buses, electric trolleys (streetcars), and subways. a. For each commuting method, draw a housing-price curve for a monocentric city, labeling each curve with the date on which the method was introduced. b. Over time, the feasib

Brief Applied Calculus
First make a substitution and then use integration by parts to evaluate the integral. \(\int t^{3} e^{-t^{2}} d t\)

Biology: The Unity and Diversity of Life 15
Bluebirds are songbirds that, like wood ducks, nest in cavities in trees. European house sparrows, which have been introduced to North America, also nest in such cavities. Explain how the arrival of the house sparrows affected the carrying capacity for bluebirds. What affect would you expect this cha

Biochemistry 9
Briefly summarize the main arguments of the chemiosmotic coupling hypothesis.