14 May WHAT IS THE MASS OF THE COPPER (II) SULFATE PENTAHYDRATE IN THE CRUCIBLE?
Which of the following statements is true?
A. Gas particles are attracted to one another and therefore behave as grouped particles.
B. The volume occupied by particles of a gas typically accounts for about 10-25% of the container volume
C.Particles in a gas have very little space between them
D. Gases consist of molecular(or atomic) particles moving at any given instant in straight lines
2)An empty crucible has a mass of 25.70g. After some copper (II) sulfate pentahydrate is added, the mass is 28.855g. What is the mass of the copper (II) sulfate pentahydrate in the crucible?
A.3g
B.3.2g
C.3.16g
D.3.1550g
3)which of the following represents units in which density might be expressed?
A.liters/seconds
B.liters/grams
C.milligrams/miles
D.kilograms/pints
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