2. Below are several statements. Each statement can best be classified as either a law or a theory,Please select each statement that is best classified as a law.O When a gas rises in temperature, we believe that it is due to increased motion of the molecules.O Gravity explains why planets remain in their orbits.O There is strong evidence to suggest that earthquakes are due to moving parts of the earth's crust that we callplates.a Force equals mass tímes acceleration.a When we see several layers of rock, the lower layers are older.O With all other conditions remaining stable, we observe that as the pressure of a gas increases, thetemperature also rises. Likewise, when the temperature rises, the pressure rises.O Kepler developed a set of rules to describe the motion of the planets.O Based on the available data and our current understanding, it seems that the Universe began with a suddenexpansion of space.

A theory is an explanation of an observed phenomenon or data set that may or may not have…

Below are several statements. Each statement can best be classified as either a law or a theory. Please select each statement that is best classified as a law. O When a gas rises in temperature, we beleve that it is due to increased motion of the molecules. O Gravity explains why planets remain in their orbits. O There is strong evidence to suggest that earthquakes are due to moving parts of the earth's crust that we call plates. a Force equals mass time a When we see several layers of rock, the lower layers are older. s acceleration. O With all other conditions remaining stable, we observe that as the pressure of a gas increases, the temperature also rises. Likewise, when the temperature rises, the pressure rises. O Kepler developed a set of rules to describe the motion of the planets. Based on the available data and our current understanding, it seems that the Universe began with a sudden expansion of space.

Below are several statements. Each statement can best be classified as either a law or a theory. Please select each statement that is best classified as a law. O When a gas rises in temperature, we beleve that it is due to increased motion of the molecules. O Gravity explains why planets remain in their orbits. O There is strong evidence to suggest that earthquakes are due to moving parts of the earth's crust that we call plates. a Force equals mass time a When we see several layers of rock, the lower layers are older. s acceleration. O With all other conditions remaining stable, we observe that as the pressure of a gas increases, the temperature also rises. Likewise, when the temperature rises, the pressure rises. O Kepler developed a set of rules to describe the motion of the planets. Based on the available data and our current understanding, it seems that the Universe began with a sudden expansion of space.

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter1: Matter, Measurements, And Calculations

Section: Chapter Questions

Problem 1.12E

See similar textbooks

Similar questions

You have two distinct gaseous compounds made from element X and element Y. The mass percents are as follows: Compound I: 30.43% X, 69.57% Y Compound II: 63.64% X, 36.36% Y In their natural standard states, element X and element Y exist as gases. (Monatomic? Diatomic? Triatomic? That is for you to determine.) When you react gas X with gas Y to make the products, you get the following data (all at the same pressure and temperature): 1. volume gas X + 2 volumes gas Y2 volumes compound I 2. volumes gas X + 1 volume gas Y2 volumes compound II Assume the simplest possible formulas for reactants and products in the chemical equations above. Then, determine the relative atomic masses of element X and element Y.
Constant Composition of Compounds Two samples of sugar are decomposed into their constituent elements. One sample of sugar produces 18.0 g carbon, 3.0 g hydrogen, and 24.0 g oxygen; the other sample produces 24.0 g carbon, 4.0 g hydrogen, and 32.0 g oxygen. Find the ratio of carbon to hydrogen and the ratio of oxygen to hydrogen for each of the samples, and show they are consistent with the law of constant composition.
In 1886 Eugene Goldstein observed positively charged particles moving in the opposite direction to electrons in a cathode ray tube (illustrated below). From their mass, he concluded that these particles were formed from residual gas in the tube. For example, if the cathode ray tube contained helium, the canal rays consisted of He+ ions. Describe a process that could lead to these ions. Canal rays. In 1886, Eugene Goldstein detected a stream of particles traveling in the direction opposite to that of the negatively charged cathode rays (electrons). He called this stream of positive particles "canal rays:"
You may have noticed that when water boils, you can see bubbles that rise to the surface of the water. Which of the following is inside these bubbles? Explain. a. air b. hydrogen and oxygen gas c. oxygen gas d. water vapor e. carbon dioxide gas
True or false? If a theory is disproven, then all of the observations that support that theory are also disproven. Explain.
Several samples of methane gas, the primary component of natural gas, are decomposed into carbon and hydrogen. The masses of the carbon and hydrogen are then weighed, and the results are tabulated as shown here. Which of these does not follow the law of constant composition? a. 4.0 grams hydrogen and 12.0 grams carbon b. 1.5 grams hydrogen and 4.5 grams carbon c. 7.0 grams hydrogen and 17.0 grams carbon d. 10 grams hydrogen and 30 grams carbon
Copper atoms. (a) What is the average mass of one copper atom? (b) Students in a college computer science class once sued the college because they were asked to calculate the cost of one atom and could not do it. But you are in a chemistry course, and you can do this. (See E. Felsenthal, Wall Street Journal, May 9, 1995.) If the cost of 2.0-mm diameter copper wire (99.9995% pure] is currently 41.70 for 7.0 g, what is the cost of one copper atom?
The nuclei of a limited number of atoms are investigated to determine the number of protons and neutrons in each. The following table summarizes the results: helium 2 protons, 2 neutrons carbon 6 protons, 6 neutrons nitrogen 7 protons, 7 neutrons a. Form a scientific law based on these limited measurements. b. What other measurements could be carried out to further confirm this law? c. Devise a theory that would explain your law. d. How would the following results affect your theory and your law? uranium 92 protons, 143 neutrons chromium 24 protons, 28 neutrons
How does an atom differ from a molecule? In what ways are they similar?
A materials engineer has filed for a patent for a new alloy to be used in golf club heads. The composition by mass ranges from 25 to 31% manganese, 6.3 to 7.8% aluminum, 0.65 to 0.85% carbon, and 5.5 to 9.0% chromium, with the remainder being iron. What are the maximum and minimum percentages of iron possible in this alloy? Use Figure 2.12 to snake a prediction about how the density of this alloy would compare with that of iron; justify your prediction.
The early alchemists used to do an experiment in which water was boiled for several days in a sealed glass container. Eventually. some solid residue would appear in die bottom of the flask, which was interpreted to mean that some of the water in the flask had been converted into earth. When Lavoisier repeated this experiment, he found that the water weighed the same before and after heating, and the mass of die flask plus the solid residue equaled the original mass of the flask. Were the alchemists correct? Explain what really happened. (This experiment is described in the article by A. F. Scott in Scientific American, January 1984.)