Question

What would be the mass of 50.0cm^3 of Silver?
P.S THE DENSITY OF SILVER IS 10.5...

Answer 1

here's a hint

mass = density x volume

Answer 2

right so the answer would be 47.6?

Answer 3

it depends... what is the unit of the density of silver?

Answer 4

10.5 what?

Answer 5

g/mL

Answer 6

i dont get it.. if i only have the number of mass and density all i goatta find it the volume right??

Answer 7

*is

Answer 8

you have to look at the units too

Answer 9

unless the number there givng me is the volume?

Answer 10

your density is g/mL and your volume is cm^3

you can't just multiply them because they don't have the same units...make sense?

Answer 11

50.0 cm^3 <--volume

Answer 12

ohhh okay i understand..

Answer 13

i goatta convert it

Answer 14

yes

Answer 15

so can you help me with this one?

Answer 16

google can... http://www.google.com/search?q=1+cm%5E3+%3D+%3F+mL&oq=1+cm%5E3+%3D+%3F+mL&sugexp=chrome,mod=0&sourceid=chrome&ie=UTF-8

Answer 17

if you want...you can just input 50.0 cm^3 directly... http://www.google.com/search?q=1+cm%5E3+%3D+%3F+mL&oq=1+cm%5E3+%3D+%3F+mL&sugexp=chrome,mod=0&sourceid=chrome&ie=UTF-8#hl=en&sclient=psy-ab&q=50.0+cm%5E3+%3D+%3F+mL&oq=50.0+cm%5E3+%3D+%3F+mL&gs_l=serp.3...51063.51685.0.51905.4.4.0.0.0.3.451.1292.4-3.3.0.les%3B..0.0...1c.1.L-euyuuGh-Y&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=7538a0c41cbb3091&bpcl=35277026&biw=1280&bih=923

Answer 18

oh okay thanks but how will i write that down on paper plus show some type of work

Answer 19

look at my two previous comments...

Answer 20

with the links?

Answer 21

yes

Answer 22

that's how you show work

Answer 23

first write the conversion

Answer 24

okay cool thanks alot :)

Answer 25

like 1 cm^3 = 1 mL

then write 50 cm^3 = 50 mL

that simple

Answer 26

and thats it right?? just keep doing that for very problem? or there is more to it?

Answer 27

well it just so happens that 1cm^3 = 1 mL that's why it's simple....but that's pretty much how it's done....anyways it's really up to you. it's your work after all

Answer 28

okay so i after i write that down thats it... can we do one more together? but this time i show you what i get and you tell me if its right or not?/

Answer 29

sure

Answer 30

and after you write it down you still have to solve the mass...it doesn't end in the conversion...just to be clear

Answer 31

so this one is the what would be the mass of 78.2 mL of mercury P.S MERCURY IS 13.6G/mL (density)

Answer 32

so like which unit am i supposed to chose out of grams and mL?

Answer 33

volume is already in mL and density is in g/mL no need to convert

Answer 34

if you multiply volume and density you get \[\frac{g}{mL} \times mL \implies g\]
and g is the unit for mass

Answer 35

soo lets get this straight g is the unit for mass mL is the unit for volume?

Answer 36

yes

Answer 37

but there are more. those are just some

Answer 38

density is g/mL because density is mass/volume so unit of mass is g then divided by mass of volume which is mL

Answer 39

yeah but these are the ones we focusing on are g and mL

Answer 40

ahh then that narrows down the units

Answer 41

yeah so my final answer would just be 78.2mL??

Answer 42

that's volume...you're looking for mass...

Answer 43

oh so 78.2g?

Answer 44

.....you don't just change mL into g to make it mass.....

Answer 45

lol then i'm sorry idk

Answer 46

i told you before... mass is density * volume

Answer 47

ohh so 13.6*78.2=1063.52

Answer 48

yes

Answer 49

but then it says round to one decimal point then it'll be 1063.5?

Answer 50

yes

Answer 51

okay i'm goanna do the last one on my own and i just want you to check it to seee if i'm getting it

Answer 52

sadly i have to leave now...but if it's just going to be quick then i can stick around

Answer 53

this one is what would be the volume of 112.4g of aluminum... P.S ALUMINUM'S DENSITY IS 2.7 G/mL

Answer 54

well i have to divide right? because the equal each other

Answer 55

yes you divide...but not because they equal each other....

Answer 56

volume is mass/density

Answer 57

anyway i have to go now

Answer 58

ohh okay thanks alot i understand now.