What is avogadro’s number?
a. the number of atoms in exactly 14.00 g of carbon-12
b....
Chemistry, 18.09.2019 14:00 kiaraangely100400
What is avogadro’s number?
a. the number of atoms in exactly 14.00 g of carbon-12
b. the number of atoms in a kilogram of any substance
c. the number of atoms, molecules, ions, formula units, or other particles in a mole of a substance
d. the number of atoms, molecules, ions, formula units, or other particles in a gram of a substance
Answers: 2
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Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c
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Based on the formulas, select the compounds below that are covalent: kbr sif4 al2o3 co2 naco3 s7o2 pcl3 fe3n2 h2o s2f10
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How many joules of heat are required to raise thetemperature of 750 g of water from 11.0 °c to 19.0 °c?
Answers: 1
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15) a substance used in manufacturing gasoline consists of finely divided platinum supported on an inert solid. suppose that the platinum is formed by the high temperature reaction between platinum (iv) oxide and hydrogen gas. the other product is water. a) write and balance the equation b) how many grams of hydrogen are needed to produce 1.0 g of platinum metal? c) how many moles of water are produced at the same time? how many grams? ( show work, .)
Answers: 1
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