8. A student collects the following data in their lab. Trial
Temperature
Reaction Rate

Once they collect their data they develop a claim-evidence-reasoning statement
Claim: The rate of a reaction decreases as the temperature decreases.
Evidence: As the temperature of the reaction increased from 10°C to 25°C the reaction rate increased from 60
seconds to 90 seconds.
Reasoning: Reaction rate depends on the temperature of the reactants. So when the temperature decreases, so
should the reaction rate. Particles need to collide in order to react. Lower temperatures allow molecules to move
slow enough to stick together and react so the reaction rate decreases.
Use the space below to provide feedback to the student. Was their conclusion correct? How should they fix it?

56 moles of   lieter in chemistry

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.

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considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.