0/1 point Answer: Tripotassium nitrogen Question 24 Provide a name for Fezs 0.25

Question

0/1 point Answer: Tripotassium nitrogen Question 24 Provide a name for Fezs 0.25 1 point Answer: di iron sulfide Question 25 0.25 1 point Provide a name for CS2. Answer: Carbon Sulfide Question 26 0 1 point The uranium found in uranium ores is found in the uranium oxide, u30s. f a sample of uranium oxide contains (5.46x10A21) oxygen atoms, how many uranium atoms are in that sample? (report your answer using scientific notation) Answer: 1/1 point Question 27 Acetic acid (a compound found in vinegar) has the molecular formula C2H402. What is the molecular weight of acetic acid in amu? Report your answer to the hundredths place. Answer: 60.03 0.85 1 point Question 28 Ethanol has a molecular weight of 46.07amu. What would be the mass in grams of 2.7 moles of ethanol?

Explanation / Answer

26)
The oxide is U3O8

from this we can say that,
number of U atom = (3/8)* number of O atom

so, putting values
number of U atom = (3/8)* number of O atom
= (3/8)*5.46*10^21 atom
= 2.05*10^21 atom

Answer: 2.05*10^21 atom

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