Chemistry

For an electric toothbrush, is input energy equal to useful output energy? Explainyour answer.
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What volume of 0.100 M AgNO3 isneeded to react completely with45.0 mL of 0.230 M Na2S?2AgNO3 + Na2S Ag2S + 2NaNO3[?] mL AgNO3
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What are ocean currents?
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calculate the mass of 1 molecule of water and 100 molecules of glucose
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What is the formula for this compound? 2 atoms of aluminum, 3 atoms of sulfur
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What characteristic of an element determines how its atoms can bond with other atoms? A. its total number of electrons B. its number of valence electronsC. how many low-energy-level electrons it has D. how many protons and neutrons it has50 brainly points!
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What is the one defining abiotic factor of a desert?cold temperatureshigh windslittle or no rainfallhigh humidity
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Explain what happens during soil depletion and also how we can help prevent this naturally without chemicals? PLZ FAST TYY
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How does VSEPR theory describe the double bonds between the central carbon atom and each oxygen atom of Co2?
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A cell phone manufacturer recalled some 50 million lithium batteries installed in cell phones because the batteries were at risk of overheating and exploding. The hazardous waste characteristic of the batteries in this example is __________.
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Which of the following materials can conduct electricity? Plastic pencil case Rubber band Steel necklace Wood ruler
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what happens when you add vinegar to baking soda
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why does fluorine have the highest electronegativity
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How many protons, neutrons, and electrons are in an atom of beryllium with a mass number of 9?A) 5 protons,5 electrons,4 neutronsB) 4 protons,4 electrons,4 neutrons C) 4 protons,4 electrons,9 neutrons D) 4 protons,4 electrons,5 neutrons
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KOH(Ac) + HNO3 KNO3(Ac) + H2Ocual es su reacio
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please help quickly Rubia was given a type of inclined plane called a ramp in her science class. Her teacher told her that the ramp should have a mechanical advantage of 3.Rubia pulled a block up the ramp, but afterward she calculated that the mechanical advantage of the ramp was 2.8 instead of 3. Her teacher said she did not make a mistake. What did Rubia calculate? A. the actual operating power of the ramp B. the actual mechanical advantage of the ramp C. the ideal mechanical advantage of the ramp D. the ideal operating power of the ramp
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Many businesses are using infrared thermometers to check customer's temperatures as they enter. What are the benefits of using these thermometers? (Select all that apply.)They check temperature using thermal energy waves that people give off.They don't have to touch the person to accurately find their temperature.They check temperature using UV light that people give off.They have to touch a person to accurately find their temperature.
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how many molecules are in 2.50 moles of co2
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Which method is used to obtain common salt from rock salt? Why?
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How many grams of O2 are reacted when 3.5mols of P203 are formed?
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What is the frequency of the above wave?
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What is the pressure exerted by a force of 15.0 N over an area of 0.00372 m^2 ?
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flowering plants are called
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A chemist heats a gas within a sealed, rigid container. Which statement describes the changes that occur in the gas? (1 point)-The gas particles move slower and hit the sides of the container with less force, consequently, the pressureincreases-The gas particles move slower and hit the sides of the container with less force, consequently, the pressure decreases-The gas particles move faster and hit the sides of the container with more force, consequently, the pressureincreases-The gas particles move faster and hit the sides of the container with more force, consequently, the pressuredecreases
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