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December 2025

42,840 public questions were asked this month.

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Recent questions

Latest from December 2025

Which statement defines calorimetry? the conservation of energy a unit of energy that is used when calculating energy exchange a device that is used to measure the heat that is gained or lost during a chemical change the...
Asked by qp 1 answer
In which region would you find the lowest concentration of public land in the United States? a. the Pacific Northwest b. the West coast c. New England d. the Midwest Please select the best answer from the choices provide...
Asked by bob 1 answer
Which groups opposed the construction of railroads? Select 3. innkeepers at stagecoach stops road travelers coal miners investors in canals iron producers
Asked by Makayla 1 answer
Combine and simplify these radicals. 160 40
Asked by kelvin calin 1 answer
Solving an Equation Based on a Real-World Example Below is the equation that represents the markers Janelle brought in for her math group. x = the number of students in Janelle's math group. 3x + 5 = 23 Solve the equatio...
Asked by D4VD 1 answer
Two metal blocks that have slightly different temperatures are placed next to one another. After five minutes, they both have lower but equal temperatures. According to the law of conservation of energy, what most likely...
Asked by qp 1 answer
Which is the best example of how electromagnetic energy is used? a pot of boiling water on a gas stove a patient receiving an X-ray in a hospital a car burning gasoline to power the engine a car of a roller coaster movin...
Asked by qp 1 answer
The principle difference between point source and nonpoint source water pollution is _______. a. whether the pollution is organic or inorganic b. the number of sources of pollution c. the amount of pollution d. whether i...
Asked by bob 1 answer
What is the simplified form of StartRoot 10,000 x Superscript 64 Baseline EndRoot ? 5000x Superscript 32 5000x Superscript 8 100x Superscript 8 100x Superscript 32
Asked by kelvin calin 1 answer
Which best describes heat? energy that is carried by electric and magnetic fields energy that decreases as a car slows to a stop energy that increases as a book is lifted to a higher shelf energy that flows from a hot mu...
Asked by qp 1 answer
The Erie Canal cost seven million dollars, but toll charges paid the entire cost in years. 10, 20, 30, 40
Asked by Makayla 1 answer
Which of the following statements about pesticides is true? a. Pesticides provide plants with essential nutrients. b. Pesticides prevent the destruction of crops. c. Pesticides are never harmful to plants. d. Pesticides...
Asked by bob 1 answer
What explains the key difference between a bomb calorimeter and a coffee cup calorimeter? A bomb calorimeter is 10 times larger but works the same way. A bomb calorimeter measures heat for liquid products only. A bomb ca...
Asked by qp 1 answer
Which of the following statements about turning points in environmental policy is true? a. Environmental policy has changed over time as a result of pressure from industry. b. Turning points in environmental policy were...
Asked by bob 1 answer
What number should be added to both sides of the equation to complete the square? x2 – 10x = 7
Asked by kelvin calin 1 answer
Complete the following using the right conjugation of the verb ser Yo _________Question Blank 1 of 10 type your answer... ______________ simpático con mis amigos. Nancy _______Question Blank 2 of 10 type your answer... _...
Asked by alex 1 answer
Which of the following statements about water policy is true? a. The United States does not regulate water quality. b. Policies regulating water pollution and water quality have eliminated environmentalists concern about...
Asked by bob 1 answer
Which describes the enthalpy change associated with an endothermic reaction? It is negative because the enthalpy of the products is greater than the enthalpy of the reactants. It is positive because the enthalpy of the p...
Asked by qp 1 answer
What is the first step in solving the quadratic equation -5x2+8=133? taking the square root of both sides of the equation subtracting 8 from both sides of the equation squaring both sides of the equation adding 8 to both...
Asked by kelvin calin 1 answer
Which statements are true of communism? Check all that apply. It says that private individuals should own most property. It opposes the ideals of the system of capitalism. It includes both economic and political ideas an...
Asked by p 1 answer
Which of the following statements about change in ecosystems is true? a. Ecosystems experience change through human activity only. b. Ecosystems experience change through natural events only. c. Ecosystems experience no...
Asked by bob 1 answer
Which statement best describes the direction of heat flow by conduction between two samples of the same material? Heat flows from faster molecules to slower molecules when they are near. Heat flows from faster molecules...
Asked by qp 1 answer
Which of the following best explains why soil conservation is important to human agriculture? a. Erosion prevention prevents millions of dollars in damage from mudslides. b. It is easier to prevent the degradation of old...
Asked by bob 1 answer
Subtract. (2d3+2d2+3d+8)–(d+2)
Asked by Nico 1 answer
To minimize finance charges calculated by the daily balance method, when in the billing cycle is it best to make purchases and payments? a. Both purchases and payments should be made early in the billing cycle. b. Both p...
Asked by julie 1 answer