Chemistry, 02.10.2019 04:20 ahmetagayew2004
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josh heated a certain amount of blue copper sulfate crystals to get 2.1 g of white copper sulfate powder and 1.4 g of water. what is most likely the mass of the blue copper sulfate that he heated and why?
2.1 g, mass of the copper sulfate is conserved
2.1 g, mass of reactant changes during chemical change
3.5 g, mass increases when chemical composition changes
3.5 g, mass is conserved during physical and chemical changes
Answers: 1
Chemistry, 21.06.2019 23:00
Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom
Answers: 1
Chemistry, 22.06.2019 00:00
For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have
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Chemistry, 22.06.2019 03:00
Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?
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