a torw anany moles ed ) 6022. dioside ane C868-1s E) 29) 000032 A) 1137 ) 11374

Question

a torw anany moles ed ) 6022. dioside ane C868-1s E) 29) 000032 A) 1137 ) 11374 ) 11373635 E) 1.1-1o If hithing the bullseye is the desired elt, Figure(a) represents A) good aeuracy and poor precistion C) poor accuracy and poor precision. U) poor eeuracy and good precision D) good aeeuracy md good precision 31) What is the mass percent of Carbon in the compound C7Hso2 E) 13.3% C)4.9% D) 738% A) 26.2% B)68.9% 32) If matter is uniform throughout and cannot bo soparated into other substances by physical processes, but can be decomposed into other substances by chemical processes, it is called a (an) A) homogeneous mixture B) clement C) compound D) heterogeneous mixture E) mixture of elements 33) How many molecules of CH4 are in 48.2 g of CH4? E)3.00 A) 4.00 B) 5.00 1024 C)2.90 1025 D181 1024 34) A combination of sand, salt, and water is an example of a A) solld B) homogencous mixture C) heterogeneous mixture D) puresubstance E) compound

Explanation / Answer

Ans 27 : D) 1.183

Molar mass of carbon dioxide = 44.01 g/mol

So number of moles = given mass / molar mass

putting values :

n = 52.06 / 44.01

= 1.183 moles

1.183 moles are present in 52.06 g of carbon dioxide.

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