Chemistry

in an electroplating apparatus, where does the oxidation reaction occur?a. on the surface of the battery b. on the surface of the cathode c. in the solutiond. on the surface of the anode
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what is a heterogeneous mixture?
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bond. Water is a polar solvent. The oxygen atom, being more electronegative, attracts the electron cloud toward itself. As the electron cloud is pulled by the oxygen atom, it carries a partial negative charge, and the hydrogen atoms carry a partial positive charge. This partial separation of charges in the water molecule makes it polar. Which intermolecular forces contribute to the dissolution of NaCl in water
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why is pluto classified as a dwarf planet?
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What volume, in liters, of 0.500 M HNO3 is necessary to react with 25.0 mL of 0.0500 M Ca(OH)2 solution to the endpoint? HNO3 + Ca(OH)2. --> Ca(NO3)2 + H2O
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Based on this diagram, which type of stars would belong to spectral class M and have thehighest luminosity?
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TRUE or FALSE: Traits that an organism has can be influenced by factors in the environment.
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Two students prepared aqueous solutions of LiCl and measured the properties, as shown in the table above. Both students observed that the solid LiCl readily dissolved in H2O. The students drew particle diagrams to explain the changes in the enthalpy and entropy of dissolution for LiCl based on their results and observations. Based on this information, the better particle diagram was drawn by which student, and why is that diagram more accurate?A) The better particle diagram was drawn by Student 1 because when LiCl dissolves in water, it dissociates into Li+ and Cl ions causing an increase in entropy.B) The better particle diagram was drawn by Student 1 because when LiCl dissolves in water, it dissociates into Li+ and Cl ions indicating that the dissolution of LiCl is exothermic.C) The better particle diagram was drawn by Student 2 because it shows that LiCl does not dissociate, resulting in a decrease in entropy for the dissolution of LiCl.D) The better particle diagram was drawn by Student 2 because it shows that LiCl does not dissociate, resulting in an endothermic process for the dissolution of LiCl.
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A 10.0 mL sample of H2SO4 was exactly neutralized by 23.5 mL of 1.00 M KOH. Calculate the molarity of the acid. H2SO4(aq) + KOH(aq) > K2SO4(aq) + H2O(l)
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If a sample of oxygen gas has a pressure of 810 torr at 298 K, what will be itspressure if its temperature is raised to 330K?
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A material in which electrons are able to move easily or freely is a(n) A none of these electric field C insulatorD conductor
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Which of the following compounds is least soluble in water? A) iron (III) chloride B) ammonium acetate C) sodium hydroxideD) magnesium carbonate
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which star is mostly like Earth's sun? A)Blue Giant B) Red Giant C) Main sequence D) White Dwarf?
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A sheet of muscles called the diaphragm seals the bottom of this cavity true or false?The blood transports the oxygen to every cell in the body true or false?The cells need carbon dioxide to release energy true or false?Carbon Dioxide is a waste product of respiration true or false?Water is needed in the cells for respiration to occur true or false?Glucose is made during the respiration true or false?Respiration does not happen in the cells when we sleep true or false?Air enters the body through the nose and mouth, and passes into the wind pipe of the trachea true or false?
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This subject is science.All the members of one community living in a particular area make up a population. True or False.Please help please please please.
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A chemical change occurs when two or more substances react to form one or more new substances. Which of the following best completes this statement about a chemical reaction?In a chemical reaction, . . .A. Atoms are neither created nor destroyed.B. Some atoms from the reactants may be lost.C. Extra atoms are always gained in the product.D. Extra atoms are added to the product, if needed.
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in what order were the sun and earth created according to both the younger theory and the older theory
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How are lysosomes and vacuoles the same? How arethey different?
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During the school year, 1.3 x 102 students participate in football, and .5 x 102 participate in soccer. What is the total number of students that participate in football
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Hybridization of Al in AlF3
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4. Calculate the heat energy needed to heat 25.0 g of water from 13.0C to 18.0C. Use chart above for specific heat of water. Use units and show all work.
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H2CO: H2O + CO2Answer the following question about the equation above.1. How many atoms of Hydrogen are in the reactant?2. How many atoms of Carbon are in the reactant?3. How many atoms of Oxygen are in the reactant?4. How many atoms of Hydrogen are in the product?5. How many atoms of Oxygen are in the product?6. How many atoms of Carbon are in the product?7. Does the number of atoms of each element on the reactant side match that of the product side?
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Deviation will occur for volume assumption at ____________ A. Low Pressure B. High PressureC. Constant PressureD. 1 atm B. is it right?
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What is the mass of an object with a net force of 10 N accelerating at 2 m/s^2??
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