<span>Physical properties are easier to observe than chemical properties as they include characteristics such as color, texture, etc. while to observe chemical properties, testing must be done of the substance such as heating the substance up to determine at what temperature it will combust</span>
Answer:
can you post a photo? to help y with the question
Explanation:
According to a source, the options that fits the question is reactants collide with reactants to form activated complex that separates into products. This clearly suggest the collision theory.
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3.11 i'm not sure about measurements maybe like 3.11kg/cm^3
Answer:
2.11 g hydrobromic acid (correct to 3SF)
Explanation:
Molecular formula of hydrobromic acid = C2H5BrO2
mass of C2H5BrO2 = 140.96g
Beginning with what we're given, 9.03*10^21 we then make a conversion by using Avegadro's number which is 6.02*10^23 per mole (Oct. 23 at 6:02 am is national mole day :) Then, we need to convert out of moles, 140.96g hydrombromic acid per mole.
It looks like this:
9.03*10^21 molecules • (1 mol C2H5BrO2 / 6.02*10^23 molecules) • (140g C2H5BrO2 / 1 mol) = 2.1144 g C2H5BrO2
