Archive day

January 16, 2026

4,278 public questions were asked on this day.

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In viewing a chemical equation, how do you determine the ratios that relate reactants and products? Responses from the subscripts of the reactants and products from the subscripts of the reactants and products from the c...
Asked by ruth 1 answer
In complete sentences, describe the characteristics of the tropical wet and dry climate regions located in South Asia. Identify the two types of ecosystems found in this climate region and at least one plant and animal f...
Asked by vfsav 1 answer
Imagine that the sun disappeared from the universe tomorrow. Which sphere or spheres would this affect?(1 point) Responses biosphere biosphere all spheres all spheres atmosphere atmosphere atmosphere and biosphere atmosp...
Asked by a 1 answer
The first known telescopes, used around 1600, consisted of a lens and an eyepiece. Today, telescopes are often computer controlled and consist of a complicated array of sophisticated lenses. Which statement correctly des...
Asked by knmk 1 answer
Which term is not a measure of the quantity of matter? Responses grams grams degrees Celsius degrees Celsius number of molecules number of molecules liters
Asked by ruth 1 answer
An entire group of elements was unknown when the periodic table was first developed because they were unreactive and no known compounds were composed of them. What most likely led to the inclusion of these elements in th...
Asked by knmk 1 answer
Complete Daniela’s note by filling in the blanks with the correct preterite form of the verbs in parentheses. Cuando ____________________(buscar) el pasaporte, no lo encontré. ¡Qué horrible! Entonces papá llegó con qué t...
Asked by santi 1 answer
Read the excerpt. People who think clearly would never vote against year-round school. The only people arguing against it selfishly want to take long summer vacations. Year-round school will instead address the very seri...
Asked by christian 1 answer
A single atom of an element has 21 neutrons, 20 electrons, and 20 protons. Which element is it? K Zr Ca Sc
Asked by knmk 1 answer
What is the correct ratio of carbon to hydrogen to oxygen in glucose (C6H12O6) ? Responses 1:2:1 1 colon 2 colon 1 2:1:1 2 colon 1 colon 1 6:6:12 6 colon 6 colon 12 12:12:6
Asked by ruth 1 answer
The chemical equation below shows the combustion of methane (CH4). CH4 + 2O2 Right arrow. CO2 + 2H2O The molar mass of oxygen gas (O2) is 32.00 g/mol. The molar mass of carbon dioxide (CO2) is 44.01 g/mol. What mass of C...
Asked by knmk 1 answer
45 divided by 4
Asked by diddy 1 answer
Which method for treating arthritis is an example of pseudoscience? diet drugs exercise magnets
Asked by knmk 1 answer
Where are deciduous forests located in India? What type of climate region is needed for these forests to thrive? Identify at least two plants and two animals that live within the deciduous forest. Be sure to use complete...
Asked by vfsav 1 answer
Reduce the following equation to a net ionic equation: 2 upper N a superscript plus, plus upper S upper o subscript 4 superscript 2 minus, plus upper B a superscript 2 plus, plus 2 upper C l superscript minus right arrow...
Asked by tj 1 answer
Which statement best explains why the atomic theory developed efficiently? Scientists ignored all previous knowledge about atoms. Scientists had used creativity and the scientific method in their investigations. Scientis...
Asked by knmk 1 answer
nalyze the photo below and answer the question that follows. A grizzled giant squirrel sitting on a log. Photo by Steve Garvie The grizzled giant squirrel in the photo above can be found in the __________ ecosystem. A. t...
Asked by vfsav 1 answer
The properties of two elements are listed below. Element Atomic radius (pm) Ionic radius (pm) First ionization energy (kJ/mol) Electron affinity (kJ/mol) Electronegativity Br 114 195 1140 –325 3.0 K 243 152.2 418.8 –48.4...
Asked by knmk 1 answer
The figure shows the hybrid orbitals of methane. mc022-1.jpg Which molecule has the same shape and hybridization as methane? SO3 C2H2 CH2O CF2Cl2
Asked by knmk 1 answer
why is economic inequalities impactful on global levels
Asked by b5 1 answer
Identify the spectator ions in this reaction: 2H+ + 2NO3– + Ca2+ + 2OH– mc001-1.jpg Ca2+ + 2NO3–+ 2H2O H+ and OH– Ca2+ and NO3– H+ and Ca2+
Asked by tj 1 answer
what effects does headphones have on humans?
Asked by tara 1 answer
Which element would most likely have chemical properties similar to that of fluorine (F)? Ne N Li Br
Asked by knmk 1 answer
hich of these is an example of slippery slope? Studies show there is little correlation between playing violent video games and violent behavior. Anti-video game activists make ridiculous arguments with little relation t...
Asked by christian 1 answer
Identify the spectator ions in this reaction: H+ + Br – + K+ + OH– mc001-1.jpg K+ + Br– + H2O H+ and K+ Br – and OH– K+ and Br–
Asked by tj 1 answer