12012019
Beschreibung
Quiz von yau jia wen, aktualisiert more than 1 year ago
|
Erstellt von yau jia wen
vor mehr als 6 Jahre
|
|
Frage 1
Frage
The relative molecular mass of NO2 is 46. This means that
Antworten
-
NO2 is 46 times heavier than the mass of carbon-12
-
NO2 is 46/12 times heavier than 1 atom of carbon-12
-
NO2 is equal to 1/12 of the mass of 1 atom of carbon-12
-
NO2 is 46 times heavier than 1/12 x 12 of carbon-12
Frage 2
Frage
Find out how many times three chromium atoms are heavier than 4 oxygen atoms. [Cr = 52; O=16]
Antworten
-
3.25
-
2.4
-
16
-
52
Frage 3
Frage
the percentage content of iodine in lead(||) iodide. PbI2 is [Pb = 207; I= 127]
Antworten
-
55%
-
27.5%
-
38%
-
76%
Frage 4
Frage
Calculate the percentage mass by weight of metal M in the compound MCl4. [RAM: M=207, Cl= 35.5]
Antworten
-
16.2%
-
14.6%
-
40.7%
-
59.3%
Frage 5
Frage
Three elements are represented by letters X, Y, and Z. One atom of Z is three times heavier than one atomof Y. One atom of Y is 2 times heavier than one atom of X. If the RAM of Z is 210, what is the RAM of X?
Antworten
-
24
-
31
-
35
-
60
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.