Question about Acer TravelMate 2300 Notebook

1 Answer

How many atoms are present?

A solid cube of aluminum (density 2.70 g/cm3) has a volume of
0.200 cm3. It is known that 27.0 g of aluminum contains 6.02 x
1023 atoms. How many aluminum atoms are contained in the
cube?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Mentor:

    An expert who has written 3 tips or uploaded 2 video tips.

  • Expert
  • 202 Answers

(0.540 g)(6.02 1023 atoms) 27.0 g 1.20 1022 atoms

Because density equals mass per unit volume, the mass of the cube is m V (2.70 g/cm3)(0.200 cm3) 0.540 g write this relationship twice, once for the actual sample of aluminum in the problem and once for a 27.0-g sample, and then we divide the first equation by the second: m sample m 27.0 g kN sample kN27.0 g

m sample m 27.0 g

Nsample N27.0 g

To solve this problem, we will set up a ratio based on the fact that the mass of a sample of material is proportional to the number of atoms contained in the sample. This technique of solving by ratios is very powerful and should be studied and understood so that it can be applied in future problem solving. Let us express our proportionality as m kN, where m is the mass of the sample, N is the number of atoms in the sample, and k is an unknown proportionality constant. We

Notice that the unknown proportionality constant k cancels, so we do not need to know its value. We now substitute the values: 0.540 g 27.0 g Nsample 6.02 N sample 1023 atoms

Posted on Jan 21, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

If volume of water is 20cm3, water density is 1g/cc, what if the mass sammple


Sounds like a trick question. A "cc" is a cubic centimeter. "cm3" is technically the same thing. So if the mass is 1g/cc, then the mass of the volume is 20g.

Mar 05, 2015 | Office Equipment & Supplies

1 Answer

I have a scotsman CM3 with aquaarmor ice machine. There is a constant trickle of water coming from each leg. Why is the happening???


Try taking off a side or back panel and see if there is frost building up. If frost is present, it could be low on refrigerant.
If there is condensation, it could be the insulation is saturated with water allowing thermal transfer to condense water out of the air.

Feb 06, 2015 | Scotsman Ice Maker CM3 30inW Cubed Ice...

1 Answer

Percent error


The difference is 7.59 - 6.7 = 0.89 in the low or minus direction.

Taking the correct value as the basis, the error is
0.89 / 7.59 x 100 = 11.73% low

This may be quoted as - 11.73% of true value

Sep 05, 2014 | Office Equipment & Supplies

1 Answer

Why Scotsman CM3 ice machine shows diagnostics water problem?


should you have any questions, Thanks John Tripp Appliance 911
First let's look through the different service manuals. CM3 Water level sense diagnosticsDOWNLOAD
Head Pressure Control Kit - CM3DOWNLOAD
Reduce Air in CM3 ModelsDOWNLOAD
Replacement of the CM3 controllerDOWNLOAD
Service Handbook to 2007 - CM/CM3DOWNLOAD . I am here should you have any questions, Thanks John Tripp Appliance 911

May 15, 2014 | Scotsman Ice Maker CM3 30inW Cubed Ice...

1 Answer

After the freeze mode finishes the machine stops and the refigeration light stays solid and will not havest unless i press the harvest button


The sump level control senor is not reading check it for rust or corrsion same thing with the harness lso make sure there is no scale build up on the float stem

Feb 05, 2014 | Scotsman Ice Maker 600LB CM3 30inW...

1 Answer

135g=how many ml ?


The gram (g) is a measure of mass (or quantity of substance). The mL is a unit of capacity (volume). What links them together is a physical characteristics called volumic mass or specific density (gravity).
That property depends on the substance. Some solid sunstances (aluminum) are light , others are very heavy (lead, mercury).
The reference density is that of water, which is taken to be 1.
Because of this a lot of people confuse the mass and the capacity, that is why we see questions like the one you just asked.

It has meaning only if you are talking about liquid water at a temperature of about 4 degrees Celsius. At that temperature 1 gram of liquid water ocupies a volume of 1 mL or 1 cm^3. Thus, 135 g of water occupies a volume of 135 cm^3, or 135 mL.

Mar 02, 2012 | Office Equipment & Supplies

1 Answer

How many grams of aluminum acetate contain 2.24 x 1022 atoms of hydrogen?


1 Look up the formula for the aluminum acetate.
2 Count the number of Hydrogen atoms per molecule: Call that nH.
3 Dividing 2.24*10^22 by nH you get the number of molecules of acetate.
4. Divide that number by Avogadro's Number to obtain the number of moles required.
5. Multiply the number of moles by the molecular mass of the aluminum acetate (look it up or use the periodic table to calculate it), you will get the mass of aluminum acetate that contains 2.24*10^22 hydrogen atoms.

Sep 14, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

If one side of a cube measures x cm what is the volume of the cube


let's look at volume. Consider a volume of a cube that is x on a side. The volume of the cube is X x Xx X = X3 (with the appropriate units - meters3 or km3 or cm3 (if you cannot handle metric))

Mar 30, 2011 | Computers & Internet

Not finding what you are looking for?
Computers & Internet Logo

255 people viewed this question

Ask a Question

Usually answered in minutes!

Top Acer Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18355 Answers

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Mohammed Ebrahim M
Mohammed Ebrahim M

Level 3 Expert

533 Answers

Are you an Acer Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...