Hannah just finished building a house of cards that stands four stories high. she is worried that it will fall down. which of the following statements must be true? a. a house of cards is too fragile and must fall down eventually due to gravity. b. if hannah adds another card to the house of cards, then it will fall down. c. as long as nobody touches the house of cards, it will remain standing. d. if no unbalanced force acts upon the house of cards, then it will remain standing forever.
Answers: 1
Chemistry, 21.06.2019 16:00, saby30
Silica, sio2, is formed on silicon as an electrically insulating layer for microelectronic devices. silica is formed when silicon is exposed to o2 gas at an elevated temperature. at 900˚c, it takes 90 minutes for the oxygen to diffuse from the surface to form a 0.06 micron (0.06 x 10-6 m) thick layer of sio2 on
Answers: 1
Chemistry, 21.06.2019 21:40, taysomoneyyy
During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.
Answers: 2
Chemistry, 21.06.2019 22:30, erinxmeow8
What are the charges of the subatomic particles by choosing the answer from the drop down menu. protons have a (+1,0,or-1). (protons, neutrons, electrons) have a 0 charge. 3.) electrons have a (+1,0,-1)
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Chemistry, 22.06.2019 04:20, lindseysmith9522
Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from
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Hannah just finished building a house of cards that stands four stories high. she is worried that it...
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