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The history of atomic theory
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What is the temperature change that 725 g of aluminum will undergo when 2.35 x 104J of thermal energy are added to it?
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Are the forces on the parachutes balanced? A. The parachutes fall at a constant speed, so the forces are balanced. B. There is a change in motion, so the forces are balanced. C. The parachutes fall at a constant speed, so the forces are unbalanced. D. There is a change in motion, so the forces are unbalanced.
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Given:BO3 + 3Mg 3MgO + B1. How many moles of Mg are required if 2 moles of B are produced?
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Convert 4.00 moles of carbon to grams
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Which organ system supports the body and allows it to move?
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Answer the given question: use Chapter 1 of notebookHow many formula units are there in 3.20x 102 moles of LICI? (2pts.)Conversion factor: 1 mole LICI=_formula of LICIStudents, draw anywhere on this slide!
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A small bubble rises from the bottom of a lake, where the temperature and pressure are 8C and 6.4 atm, to the water's surface, where the temperature is 25C and pressure is 1.0 atm. Calculate the final volume (in ml) of the bubble if its initial volume was 2.1 ml. a. 0.070 ml b. 21 ml c. 14 ml d. 42 ml
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Put the following metals in order of reactivity. Iron, potassium, copper, zinc, lead, calcium, magnesium, sodium, gold Most reactive Least reactive Complete the equations metal + oxygen . metal + water . + . metal + acid . + . What is formed when magnesium burns in air? .... What happens when copper is put into a beaker of water? .... How do you test for hydrogen gas? .... What is formed when sodium reacts with hydrochloric acid? .... How should metals more reactive than carbon be extracted from their ores? .... Why is gold used in jewelry? .... What is the rule for displacement reactions? .... Tick which reactions would happen copper Magnesium zinc copper sulfate Magnesium sulfate Zinc Sulfate Using the reactions from Q10. Choose 1 reaction youve ticked and explain why it happens. Choose 1 reaction you havent ticked and explain why it doesnt happen. .... .... .... .... Write word and symbol equations for the first reaction from Q11. .... ....
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what are some sources of error associated with electroplating
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a dragster in a race accelerated from rest to 60 m/s by the time it reached the finish line. the dragster moved the distance from start to finish in 8.3 seconds. what is the dragsters acceleration?ill mark brainliest!!
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I need help with these 7 questions ASAP pls
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A 6.40 g sample of a compound is burned to produce 8.37 g CO_2, 2.75 g H_2O, 1.06 g N_2, and 1.23 g SO_2. What is the empirical formula of the compound? Give your answer in the form C#H#N#O#S# where the number following the elements symbol corresponds to the subscript in the formula. (Dont include a 1 subscript explicitly).
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Fe2 O3 = Al =Fe Al2 O3
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A certain amount of gas at 25C and at a pressure of 0.800 atm is contained in a glass vessel. Suppose that the vessel can withstand a pressure of 2.00 atm. What is the maximum temperature in Kelvin that the gas can have without bursting the vessel? a. 745 K b. 62.5 K c. 298 K d. 760 K
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what does mechanical digestion mean ?
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pls do this and don't just do it for the points pls help me I need it
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what are the sources of error of electroplating?
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ANSWER QUICK !!! How many grams of hydrogen gas will be produced if you start with 15.0 grams of zinc and an excess amount of HCI? balanced equation:Zn + 2HCI = ZnCl2 + H2
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How many hydrogen molecules are in 1.2 moles of hydrogen?
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When Elsa freezes things, is it an example of an exothermic orendothermic reaction? Explain.
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Please ASAP: According to their energies, atomic orbitals are filled as:
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How many moles in 13 grams of C 2 H6 ? show work
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