1) 2.55 mole Cu2CrO4 convert into mass 2)1.95 mole HNO3 conver into volume 3) 2.00 mole HC2H3O2 to particle?

Question

4) 34.2 gram NH3 to volume

convert: 8409 cm to km

convert: 63 F to K

convert: 16 K to C
convert: 45 km to mm
convert: 12.3 mL to L
convert: 23 hrs into seconds

Answer 1

1) molecular weight = 247.1 g/mol

2.55 mole x 247.1 g/mol = 630 g



2) molecular weight = 63 g/mol

1.95 mol x 63 g/mol = 122.8 g

We can get volume by density . V = mass / density



3 ) 2.00 x 6.02 x 10^23 = 1.2 x 10^24 molecules



4 ) molecular weight = 17 g/mol



5 ) 63 F = 17.2 °C = 17.2 + 273 = 290.2 K



6 ) 16 - 273 = -257 °C



7) 45000000 mm



8 ) 0.0123 L



9 ) 1 hour = 3600 s ;

3600 x 23 = 82800 s

Answer 2

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Answer 3

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