A couple has 2 children. What is the probability that both

Principles of General Chemistry 2
Problem 49P Strike anywhere matches contain the compound tetraphosphorus trisulfide, which bums to form tetraphosphorus decaoxide and sulfur dioxide gas. How many milliliters of sulfur dioxide, measured at 725 torr and 32C, can be produced from burning 0.800 g of tetraphosphorus trisulfide?

Chemistry 11
Three apprentice tailors (\(X\), \(Y\), and \(Z\)) are assigned the task of measuring the seam of a pair of trousers. Each one makes three measurements. The results in inches are \(X\) (31.5, 31.6, 31.4); \(Y\) (32.8, 32.3, 32.7); \(Z\) (31.9, 32.2, 32.1). The true length is 32.0 in. Comment on the p

Physics for Scientists and Engineers with Modern Physics 9
Two square wells have the same length. Well 1 has walls of finite height, and well 2 has walls of infinite height. Both wells contain identical quantum particles, one in each well. (i) Is the wavelength of the ground-state wave function (a) greater for well 1, (b) greater for well 2, or (c) equal for

Anatomy & Physiology 1
Closer to the heart, arteries would be expected to have a higher percentage of ________. a. endothelium b. smooth muscle fibers c. elastic fibers d. collagenous fibers

Anatomy & Physiology 1
If anabolic reactions exceed catabolic reactions, the result will be ________. a. weight loss b. weight gain c. metabolic rate change d. development of disease

Essentials of Human Anatomy & Physiology 11
Name the parts of a typical vertebra, and explain in general how the cervical, thoracic, and lumbar vertebrae differ from one another.

The Economics of Money, Banking and Financial Markets 12th
On June 23, 2016, voters in the United Kingdom voted to leave the European Union. From June 16 to June 23, 2016, the exchange rate between the British pound and the U.S. dollar increased from 1.41 dollars per pound to 1.48 dollars per pound. What can you say about market expectations regarding the re

Urban Economics 8
Matter Transmitter and Trading City Consider a region with two standardized products (bread and shirts) that are transported by horse-drawn wagons. There is a single trading city. Consider the effects of a new matter transmitter, an indivisible input that is economical for trading fi rms in the city,