Three samples of iron with masses of 1.12 grams, 1.8 grams, and 1.562 grams were mixed together. The combined mass of the three samples,
expressed to the correct number of significant figures is

A) 4.4 grams
B) 4.48 grams
C) 4.5 grams

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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

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.