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julia-pushkina [17]
2 years ago
14

Which of the following sets represents a pair of isotopes? (2 points) Question 6 options: 1) 35Cl and 37Cl 2) 40Ar and 40K 3) O2

and O3 4) 16O and 16O2
Chemistry
1 answer:
nikitadnepr [17]2 years ago
4 0
Isotope - the same element, but different atomic mass so 1)35 Cl  and 37 Cl
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a square boat made from iron has overall dimensions of 2.00 cm x 11.0 cm x 11.0 cm. it has a mass of 213 g. water has a density
Stolb23 [73]
Density of boat  =  \frac{MASS}{VOLUME}
                           
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Since the density of water is greater than the density of the boat ( 1 > 0.88) then that means, the boat will NOT sink.

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3 years ago
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2 years ago
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3 years ago
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3 0
3 years ago
Calculate the molality of a solution prepared by dissolving 175 g of KNO3 in 750 g of water. (round to nearest hundreth)
Wittaler [7]
We will get the molality from this formula:
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So first we need the no.of moles of KNO3 = the mass of KNO3 / molar mass of KNO3
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