Chemistry, 28.07.2019 13:00 haleyzoey7
Aneutral atom has an atomic number of 20 and a mass number of 41; how many protons, neutrons, and electrons are found within the atom? a) 21 protons, 21 electrons, and 20 neutrons b) 20 protons, 20 electrons, and 21 neutrons c) 21 protons, 20 electrons, and 20 neutrons d) 41 protons, 41 electrons, and 20 neutrons
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Chemistry, 22.06.2019 04:00
Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity
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Chemistry, 22.06.2019 07:10
Remember to use the proper number of significant figures and leading zeros in all calculations.gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4
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Chemistry, 22.06.2019 07:20
After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)
Answers: 1
Chemistry, 22.06.2019 18:00
Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
Answers: 2
Aneutral atom has an atomic number of 20 and a mass number of 41; how many protons, neutrons, and e...
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