itsmichelle29
  • itsmichelle29
A
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
\[30 people \times \frac{ 6 pens }{ 1 people } \times \frac{ 1package }{ 5 pens } \times \frac{ $1.88 }{ 1 package }\] 6 pens=1 people or 6 pens per person 1 package=5 pens or 1 package per person $1.88=1 package or $1.88 per package per=divide.
anonymous
  • anonymous
All units cancels out except the $ sign.
anonymous
  • anonymous
Yes.

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anonymous
  • anonymous
I was helping someone sorry.
anonymous
  • anonymous
Post it.
anonymous
  • anonymous
\[\frac{ 3.255g }{ mL }=\frac{ 3.255kg }{ L }\] 1000 milligrams=1 grams 1000 grams= 1 kilograms.
anonymous
  • anonymous
Can you solve it now?
anonymous
  • anonymous
What is the formula for density?
anonymous
  • anonymous
The whole process would have to be in conversion?
anonymous
  • anonymous
So what is the unit for density?
anonymous
  • anonymous
d=m/v so the unit of density is the (unit of m)/(unit of v) M is mass V is volume What are the units for mass and volume?
anonymous
  • anonymous
Yes that works. So density is g/mL or kg/L
anonymous
  • anonymous
Can you answer this? The whole process would have to be in conversion (dimensional analysis) ?
anonymous
  • anonymous
Does the whole process need to be like this? \[\frac{ ? }{ ? } \times \frac{ ? }{ ? } \times \frac{ ? }{ ? }\] Its a just a yes or no.
anonymous
  • anonymous
Ok, you start with given and make the units cancel until you get Liters by itself. Similar to what I did earlier. Since you wouldnt mind trying, show me your dimensional analysis, then I can show you mines.
anonymous
  • anonymous
If you are given unit1 and want to find unit 3 use this \[\frac{ Unit1 }{ 1} \times \frac{ Unit 2 }{ Unit1 } \times \frac{ Unit 3}{ Unit2 }\]
anonymous
  • anonymous
Notice how unit 1 and unit cancels out?
anonymous
  • anonymous
and unit 2*?
anonymous
  • anonymous
It is supposed to be 123000 mg /1 at the beginning. That is the given unit.
anonymous
  • anonymous
|dw:1442626458859:dw|
anonymous
  • anonymous
Oh ok. I knew that but just didnt write it correctly because I am not actually doing it yet. But my bad.
anonymous
  • anonymous
Give it one more go and I will post the steps.
anonymous
  • anonymous
100kg is not 1g
anonymous
  • anonymous
\[\frac{ 1236000mg }{ 1 } \times \frac{ 0.000001kg }{ 1mg } \times \frac{ 1000g }{ 1kg }\times \frac{ 1mL }{ 3.255 g } \times \frac{ 0.001L }{ 1mL }\]
anonymous
  • anonymous
3.255 g/mL can be switched as mL/3.255g
anonymous
  • anonymous
Its supposed to be 1230000 mg not 1236000 my bad
anonymous
  • anonymous
In my opinion without using the dimensional analysis (factor), it is shorter.
anonymous
  • anonymous
Glad to help! I have to go out for dinner now. If you still need help, PM me like 2-3 hours. Good luck on the rest!

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