How many, moles of HNO3 are required to form 0.045 mol of Br2 according to the equation below? KBrO3(aq) + 5 KBr(aq) + 6 HNO3(aq) → 6 KNO3(aq) + 3 Br2() + 3 H2O(1)
O 0.090
O 0.075
O 0.030
O 0.015
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This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal