Physics
Physics, 05.11.2019 17:31, martdrea13

Copper atoms are used to produce pennies. the copper atoms in pennies share many electrons. pennies contain [blank] bonds.

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Mathematics, 27.06.2019 22:30, miriamjb
In 1983 the composition of pennies in the united states was changed due, in part, to the rising cost of copper. pennies minted after 1983 weigh 2.50 grams while the earlier copper pennies weigh 3.11 grams. a. a roll of pennies contains 50 pennies. if a particular roll of pennies weighs 138.42 grams, how many of the earlier copper pennies and how many of the after 1983 pennies does this roll contain? b. suppose you measure a roll of pennies on a scale which only reads the weight to the nearest gram. the scale says that the roll of pennies weighs 131 grams. what can you conclude about the pennies in this roll? what if the roll weights 134 grams? explain.
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Physics, 25.07.2019 04:00, rara54
Calcium chloride is used to make pickles. the calcium atom transfers electrons to chlorine atoms, leading to the formation of chemical bonds. calcium chloride contains bonds. a. covalent b. ionic c. metallic copper atoms are used to produce pennies. the copper atoms in pennies share many electrons. pennies contain bonds. a. covalent b. ionic c. metallic hydrochloric acid is the main acid that break down food in the stomach. the atoms of hydrochloric acid share electrons. hydrochloric acid contains bonds. a. covalent b. ionic c. metallic
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Chemistry, 04.09.2019 06:10, xojade
1. pretend that a store has a huge jar of pennies that weighs exactly 25 kg (25,000 g). the person who comes closest to guessing how many pennies are in the jar wins it. if the actual abundance of pre-1982 and post-1982 pennies in circulation is the same as the numbers from your sample, how many "atoms” of pennium (pennies) should there be in 25,000 g jar of pennies. show your work! 2. you have been given a new sample of the element 'pennium' (pn), and you know that this sample has 55 atoms in it and that the total mass of the sample is 155.5g. you also know that there are two isotopes of pennium, pennium-2.5 and pennium-3.1. it is your job to figure out how many atoms (of the 55 in your sample) are of the isotope 2.5 and how many are of the isotope 3.1.
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Copper atoms are used to produce pennies. the copper atoms in pennies share many electrons. pennies...

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