((PLEASE HELP ASAP i have no idea what i'm doing i need someone who does. Will give BRAINLIEST if correct. and p l e a s e do n o t leave out a n y information.))
Use the Periodic Table of Elements to obtain information about each element in the Mystery Clues list. Record your information on the Mystery Clues Data table.
Mystery Clues:
A. This element has 12 electrons when the atom is electrically neutral.
B. This element is is an alkaline-earth metals group. It has 20 protons.
C. This element has 7 electrons when the atom is electrically neutral.
D. An isotope of this element has 8 neutrons and a mass of 14.
E. This element has a chemical signal Hg.
F. This element belongs to the same group as aluminum (Al) and has an atomic mass of 69.72.
There is a Mystery Clues Data table that you need to fill out, and for each element there is an atomic number, atomic mass, number of protons, total number of electrons when electrically neutral, and the element's symbol.
(I wasn't able to take a picture of the table so it's just a description, the best I can do.)
Answers: 1
Physics, 22.06.2019 12:10, aedelfrance9250
Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)
Answers: 1
Physics, 22.06.2019 21:10, bri9263
Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.
Answers: 2
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