What are four things that indicate that a chemical change probably happened? There are five signs of a chemical change: Color Change. Production of an odor. Change of Temperature. Evolution of a gas (formation of bubbles) Precipitate (formation of a solid) What chemical is used in hot packs? Instant Hot and Cold Packs Commercial instant […]
Which type of environmental scientist is most likely to study the effects of air pollution on asthma?
Which type of environmental scientist is most likely to study the effects of air pollution on asthma? the answer is an environmental physician . Which activity produces the smallest amount of greenhouse gases? Riding a bicycle produces the smallest amount of greenhouse gases. Is the concentration of atmospheric carbon dioxide is currently decreasing due to […]
What temperature does water boil at 100 psi?
What temperature does water boil at 100 psi? Absolute pressure Water boiling point [bara] [1×105*Pa] [psia] [°F] 6.619 96.0 325 6.757 98.0 326 6.895 100 328 Does water boil at higher pressure? A liquid at high pressure has a higher boiling point than when that liquid is at atmospheric pressure. For example, water boils at […]
What are the 3 factors that impact natural selection?
What are the 3 factors that impact natural selection? Construct an explanation based on evidence that the process of evolution primarily results from four factors: (1) the potential for a species to increase in number, (2) the heritable genetic variation of individuals in a species due to mutation and sexual reproduction, (3) competition for limited […]
Is there a relationship between speed and acceleration?
Is there a relationship between speed and acceleration? Speed is the distance covered in a unit of time while acceleration is the rate of change of speed. The unit of speed in the metric system is meters per second (m/s) while that of acceleration is meters per second squared (m/s2). Speed is a scalar quantity […]
Which country has no volcanoes?
Which country has no volcanoes? Even though Australia is home to nearly 150 volcanoes, none of them has erupted for about 4,000 to 5,000 years! The lack of volcanic activity is due to the island’s location in relation to a tectonic plate, the two layers of the Earth’s crust (or lithosphere). In which country volcano […]
What is the minimum energy of harmonic oscillator?
What is the minimum energy of harmonic oscillator? Classically, the lowest energy available to an oscillator is zero, which means the momentum also is zero, and the oscillator is not moving. Compare the quantum mechanical harmonic oscillator to the classical harmonic oscillator at v=1 and v=50. On what factor does the angular frequency of simple […]
How many years ago did the Rocky Mountains first form?
How many years ago did the Rocky Mountains first form? 1.7 billion years Where did Appalachian settlers come from? Many scholars trace the roots of Appalachian dialect—and southern highland culture in general—to migrants from northern Britain, and especially to the Scotch-Irish who came to the American backcountry from Ulster in the years preceding the American […]
Why is Group 17 so reactive?
Why is Group 17 so reactive? The halogens are located on the left of the noble gases on the periodic table. Because the halogen elements have seven valence electrons, they only require one additional electron to form a full octet. This characteristic makes them more reactive than other non-metal groups. What are the 3 groups […]
Which best describes effects of hurricanes?
Which best describes effects of hurricanes? Hurricanes also cause flooding and occur over a broader area. Which best describes the effects of hurricanes? Hurricanes have storm surges that cause widespread flooding. Why Deforestation increases the risk of floods in an area? Deforestation plays several roles in the flooding equation because trees prevent sediment runoff and […]