Chapter 1, Problem 1.34E

An electric current of 21.50 A flows for 21.0 minutes. Calculate the amount of electric charge transported.. Be sure your answer has the correct unit symbol and 3 significant digits. 7 x10 •O U 89 S

1. A thermometer is taken from an inside room to the outside, the air temperature is 5°F . After 1 minute, the thermometer reads 55°F , after 5 minutes the reading is 30°F. What is the initial temperature at the room?

4 Chemistry is the science of the structure and interactions of matter. The INCORRECT alternative is: D) All living and nonliving things consist of matter, which is anything that occupies space and has mass. Mass is the amount of matter in any object, which does not change. Weight, the force of gravity acting on matter, does change. When objects are farther from Earth, the pull of gravity is strong; this is why the weight of an astronaut is close to zero in outer space.   5. Structure of Atoms: each element is made up of atoms, the smallest units of matter that retain the properties and characteristics of the element. Is CORRECT to affirm that: B) One subatomic particle composed of individual atoms. Only three types of subatomic particles are important for understanding the chemical reactions in the human body: protons, neutrons, and electrons. The dense central core of an atom is its nucleus. Within the nucleus are positively charged neutrons (p+) and uncharged (neutral) protons…