Chemistry

1) Which statement best describes the usefulness of a model to investigate molecules at the microscopic level?(1 point)A models usefulness depends on whether direct observations of phenomena can be made.All models are useful.A models usefulness depends on the accuracy of its predictions.Models are not useful at all.2) Which scientist contributed to molecular theory by explaining that gas pressure is caused by the impact of gas molecules on surfaces?(1 point)Daniel BernoulliAmedeo AvogadroJohn DaltonRobert Boyle3) Which term did Avogadro create?(1 point)moleculemicroscopekinetic energyatom4) Which statement best describes the development of theories that connected microscopic and macroscopic phenomena?(1 point)It took several hundred years for scientists to develop current theories, and they are essentially concrete.It only took a few decades for scientists to develop current theories, and they are still being revised to this day.It only took a few decades for scientists to develop current theories, and they are essentially concrete.It took several hundred years for scientists to develop current theories, and they are still being revised to this day.5) How can the results of experiments investigating the relationship between microscopic and macroscopic phenomena affect a model of molecular theory?(1 point)Consistent results support the validity of the model, while inconsistent results require throwing out the model entirely.Consistent results require throwing out the model entirely, while inconsistent results support the validity of the model.Consistent results support the validity of the model, while inconsistent results indicate the need to modify the model.Consistent results indicate the need to modify the model, while inconsistent results support the validity of the model.
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When Brian first sorted out his thoughts, he figured this was the first day after the crash and what did he think would happen next?
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GIVING BRAINLIEST!!!
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what do drumlins tell us about glaciers
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A wave has wavelength of 10 m and a speed of 340 m/s. What is the frequency of the wave?
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d. The animals such as snakes and tortoises are called reptilians. Why?
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List the characteristics of life that plants and animals in a food web share
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For example," "however," and "also" are examples of:conjunctionsintroductory wordsnounsadjective
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Do solar panels use electrical energy or produce electrical?
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Is this soulution acidic or basic Ph= 12Basic Acidic
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Order the following elements according to the valence numbers from lowest to highest1. Boron2. Sodium3. Chlorine4. Beryllium
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_________.__________ and___________ are energy science
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1. a Use the valence electron molecular orbital diagram for F2 to propose ground state F2ions that satisfy the following conditions(1.5 points) (i) A F2 ion that is paramagnetic and that has a non-integer bond order.(1.5 points) (ii) A F2 ion that is paramagnetic and that has an integer bond order.(1.5 points) (iii) A F2 ion that is diamagnetic and that has a bond order of 3.Clearly show the charge on your ion, label all valence molecular orbitals, and show the corresponding electrons in their orbitals. Full calculations for bond orders must be included.b) Using only the valence electron molecular orbital diagram for F2, is a ground state diamagnetic ion with a bond order of 2 possible? Write one or two sentences to explain why or why not.
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What is the momentum of a car if its mass 200kg and moving with a speed of 3m/s?
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How to write a chemical formula ?
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Which chemicals previously used in products such as refrigerants, aerosol sprays, and cleaning products contributed to the depletion of the ozone layer
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math! The concentration of a water andalcohol solution is 25 percent alcohol byvolume. Calculate what the volume of alcoholwould be in 200 mL of the solution.
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Consider a 0.241 M aqueous solution of sodium hydroxide, NaOH.A. How many grams of NaOH are dissolved in 24.43 mL?B. How many individual hydroxide ions (OH-) are found in 24.43 mL?C. How many moles of sulfuric acid, H2SO4, are neutralized by 24.43 mL of 0.241 M NaOH(aq)?
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How many ml of a 2.903 M NaOH solution are needed to produce 500.0 ml of a 0.3344M solution?
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How many ml of a 2.903 M NaOH solution are needed to produce 500.0 ml of a 0.3344M solution?
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What you see as you look up at the night sky depends on the weather, the time of year, your location, and how dark your surroundings are. The--- and stars are the celestial objects most people can see in the night sky.
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15. Which reaction produces a coloured substance?A. The addition of sodium metal to water.B. The addition of sulfur dioxide gas to water.C. Burning sodium metal in chlorine gas.D. The addition of chlorine gas to a solution of potassium iodide.
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What is the atomic number of an oxygen atom that has 8 protons in its nucleus? 4 6 8 12
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How many moles of nitrogen dioxide, NO2, are present if the reaction conditions are 330 K, 2.46 atm, and 4.8 L
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