Question about Scientific Explorer My First Chemistry Kit

# What is the answer of this question? what method is used to determine the volume of stone?

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The volume of an object can often be determined easily using the "method of volume displacement." Place the object (for example, a stone) into a graduated cylinder containing a measured volume of water. The stone will displace the amount (volume) of water equal to its volume. For example, if you have filled the graduated cylinder with 50 millilters (mL) of water, and the total volume changes to 60 mL after the stone has been added, you can deduce the stone's volume to be 10 mL (60 - 50). This result obtained from your measurements (your "data") may be used to obtain another very useful bit of information often valuable to chemists: the object's "density": that is, its mass divided by its volume. Density = mass/volume, of D = M/V. The units for density are usually given in grams per mL or grams per cubic centimeters (cc). Note: a 1 mL = 1 cc. The temperature of the water should be indicated for densities because volume varies with it.

Posted on Jan 03, 2011

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Posted on Jul 14, 2010

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).
Good luck!

Posted on Jan 02, 2017

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Titration, also known as titrimetry,[1] is a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of an identified analyte. Since volume measurements play a key role in titration, it is also known as volumetric analysis. A reagent, called the titrant or titrator[2] is prepared as a standard solution. A known concentration and volume of titrant reacts with a solution of analyte or titrand[3] to determine concentration. The volume of titrant reacted is called titration volume

Feb 12, 2018 | Office Equipment & Supplies

### How many cubic yards is 3600 square feet in 6 inches?

1. Calculate
• Calculate your area (see below)
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• Where (ft2) = square foot, (ft3) = cubic foot, (yd3) = cubic yard
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Mar 23, 2015 | Building Materials

### We have a 50 liter tank that filled up to 4300 psi. in 7 min. how many scfm is my compressor putting out?

Use this method to determine the fill rate.http://www.ehow.com/how_5001852_calculate-cfm-air-compressor.html#page=1

The data provided did not provide start and stop pressure. The above method will get you there. Your cubic foot volume on the 50 liter tank is 1.7647 cubic feet to save you some calculations.

Mar 04, 2015 | Air Tools & Compressors

### Norah has 2/3 ton of stone to spread equally in 4 square yards. how many tons of stone will be spread in each square yard

The question is worded in such a way to be open to misunderstanding. I feel it could mean Norah must spread her stone at the rate of 2/3 of a ton per square yard across 4 square yards and the total is sought.
It could also be saying that Norah has 2/3 of a ton to be divided equally across 4 square yards and is seeking the amount of stone each square yard needs.

In the former case it is a matter of multiplying the vulgar fraction by four and in the latter case the answer could be approached by considering the total amount of stone given is four times the answer that is required and so would be given by dividing 2/3 by 4/1 or more simply by multiplying by 1/4 and not forgetting to cancel the resulting fraction down to the lowest common denominator.

A better way for practical purposes would be to convert 2/3 of a ton into pounds and then divide by four. A workman required to do the work would not be messing around with fractions but would be working in pounds and tons or if using Imperial measure it would be pounds, stones, hundredweight and tons.

Feb 12, 2015 | Cars & Trucks

### How do i convert kilo to stone and pounds

you can multiply the number of kilos with 2.2 and divide by 14. The answer you get will be the number of stones.
Let's convert 100kg to stones and pounds.
100 x 2.2 /14 = 15.7143 approx. (this is the number of stones)
Now deduct the whole part.
Ans - 15 = 0.7143 approx.
Now multiply this by 14. You get 10. That is the number of pounds.
So the answer is 15 stones and 10 pounds.
If you feel it is explained clearly, please give me a good rating. That will encourage me to help more people like you.
thanks for using FixYa!

Sep 18, 2011 | Office Equipment & Supplies

### I am having trouble pairing the Jabra Stone with my iPhone 3gs. I have held down the stone button multiple times and nothing happens. Also i have turned it on and off multiple times, but it just wont...

Hi, Look for "Add new device". Hit OK.
the phone will search for a couple seconds. If your headset is in paring mode, it will show up on the phone either with the name of device or something like this [unknown headset] or [b2.c3.f4.56.a1] (called a MAC address).

Either way, select it, and hit OK.

The phone will now ask you for a "Pin" or "Passcode", which is a 4 digit number. Headsets will ALWAYS have 0000 (four zeros) as a pin or passcode. I have never encountered a headset with a different number as a passcode. I have been in wireless for 10 years, and still have not found a headset that has any different numbers.

Enter these four zeros and select "OK"

The headset and phone will connect to each other. The phone will display a message that will be something to the effect of:

I've reviewed Bluetooth headsets before, and I would have to say that the Jabra STONE is one of the sleekest looking. Its shape is designed with minimalist simplicity, with a shape made for either the left or the right ear.

This shape goes onto a charger that is perfectly made to accept the Jabra STONE like a puzzle piece. This charger is probably what sets the STONE apart from most Bluetooth headsets, as it can charge the headset as the user goes. A green indicator means that it has enough charge for one full time or more. The red indicator means that it needs to be charged.

The STONE can be charged with an AC cord or USB connection. Once it is charged, there is a pairing indicator that made it simple to sync with my mobile phone. It has about 12 days (288 hours) of standby time and 8 hours of talk time.

I found that pairing the STONE with my phone was quite simple. In a matter of seconds, it was connected to my phone and I was making my first phone call on it.

The sound for the STONE is pretty good, with dual microphones and their trademarked Noise Blackout Extreme and crystal clear sound and voice with DSP.

One of the big features that I found is the touch sensitive volume control. In other words, there is no buttons for controlling the volume. I welcomed that, and most volume controls on Bluetooth headsets are really, really tiny buttons.

Other features include the ability to connect to two devices at a time, and it can stream music from an A2DP enabled mobile phone.

This is the problem that I had with the STONE. I found that there isn't really a "standby" indicator. I found that using it was a hit or miss situation. If I just pulled it out of the charger, it would sync with mobile it would work. When my phone rang later, and the headset was out of the stone cradle, and hitting the "connect" button didn't help. In short, I had to answer my phone. The Jabra STONE failed me, but I remember having similar awkward experiences when I first used other Bluetooth headsets.

The Jabra STONE comes with the headset, charger, 2 Eargels, a belt clip, AC charger, and a USB charger. You should be able to get it on Amazon for about \$90 as the price to this writing.

Feb 24, 2011 | Jabra Stone Bluetooth Headset

### Problem: Rosetta Stone msg: 1117 error occurred in the speech component operating system: Mac OSX Hi, I Have Rosseta Stone installed on my macbook pro (osx) and have/used it over a week now....

Try my steps:-
1.If you know removing installed programs from MAC, then please remove this application named-Rosetta Stone.
2. Now, remove all the cables & wires if your hardware audio device & turn off your computer.
3. Reconnect all the cables & wires & start your computer.
4. This time, reinstall the audio driver.

If this doesn't work, then you may try these ones:-
METHOD 1: Perform Step 1 to 3 again & install a different audio driver instead of Rosetta Stone.

METHOD 2: (This is only if METHOD 1 is also not working) Try your mic in any other MAC by installing Rosetta Stone in that system.

Note: You may search for a different audio driver at http://www.download.cnet.com/. Here search in mac column.
For any more support or any questions in future, you are the most welcome to contact me at abmakm@yahoo.com.

Feb 21, 2011 | Rosetta Stone Spanish (Latin American) -...

### Somehow my tanita ultimate scale has been switched from pounds to stones. How can I get it back to pounds?

Q: Why does "st-lb" or "kg" appear when taking a measurement?
A: The unit's "Weight Mode" has been set to measure your weight in units of stone-pounds (st-lb) or kilograms (kg). Tanita's Body Fat Monitors and the UltimateScales can measure weight in three different modes: lb (pounds), kg (kilograms) or st-lb (British stone-pounds). To change the setting, first find out which model you have (it should be written just above or below the display screen of the unit).
Method 1
Body Fat Monitor/Scales: TBF-611, TBF-612, TBF-621, TBF-622, BF-541, TBF-560, TBF-572. UltimateScales: 2000, 2001, 2001T. BF-662, BF-555, BF-556, BF-558, BF-559, BF-625, BF-626.
Press the Set and Up Arrow buttons at the same time. Release the buttons, the display will flash. Press the Arrow button to cycle through each weight mode until just the mode that you require is displayed. Then press Set. The display screen will flash to confirm your selection and store in memory.
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Method 2
Body Fat Monitor/Scales: BF-542, TBF-551, TBF-521, TBF-531, BF-681, BF-682, BF-679, BF-680, BF-578, all Ironman products, and all InnerScan products.
Select the preferred weight mode by using switch on the back of the measuring platform.
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Mar 15, 2009 | Health & Beauty

### No sound

Hi,

1. Open the Control panel
2. Open the "Sounds and Audio Devices" icon.
3. Verify the "Place volume icon in the taskbar" checkbox is checked. If this option is not available or is grayed out, skip to the next section of this document.
4. If you were able to check this box, click ok and close out of this window and the Control Panel.
5. Double-click the sound icon in the systray and verify that all the sound volumes are mid-way or higher.
OR Try below methods..

Method 1: Try another sound device loadTOCNode(2, 'resolution'); If possible, plug a different output device into the computer. For example, if you have been using speakers, try a different pair of speakers or a set of headphones to make sure that the problem is not related to the device itself.

Determine whether you can hear sound. If you can hear sound, there is a problem with the original output device and the issue is resolved. If you cannot hear sound, plug the original output device back into the computer and go to method 2.
Method 2: Use the Windows XP Sound Troubleshooter loadTOCNode(2, 'resolution'); Windows XP includes a troubleshooting program which could help you resolve your sound issues. Start the Windows XP Sound Troubleshooter automatically or manually and then answer each question on-screen in order to try to find a resolution.
Step 1: Start the Sound Troubleshooter loadTOCNode(3, 'resolution'); If you are already familiar with Windows XP Help and Support Center, click the following link to start the Sound Troubleshooter:
Sound Troubleshooter (hcp://help/tshoot/tssound.htm) OR

Start Sound Troubleshooter manually by using the following steps:
1. Click Start, and then click Help and Support.
2. Under Pick a Help Topic, click Fixing a problem.
3. In the navigation pane on the left, click Games, sound, and video problems.
4. In the topic pane, on the right side, click Sound Troubleshooter.
Step 2: Use the Sound Troubleshooter loadTOCNode(3, 'resolution');
1. Click the option that describes the problem that is occurring, and then click Next.
2. Repeat step 1 until your problem is resolved or until you have reached the end of the troubleshooting path.

Note You can click Back at any time to repeat the last step, or you can click Start Over to start the Sound Troubleshooter again.
Determine whether you can now hear sound. If you can hear sound, the issue is resolved. If you cannot hear sound, try method 3.
Method 3: Update your Media Player software loadTOCNode(2, 'resolution'); If the sound problem that you are experiencing occurs when you use a media player such as Microsoft Windows Media Player, try updating your media player software. To obtain the latest version of the Windows Media Player, visit the following Microsoft Web site:
Method 4: Update sound drivers loadTOCNode(2, 'resolution'); Out-of-date sound drivers may cause sound problems. Check whether an updated sound driver is available. You can use Microsoft Update to help you determine your current sound driver and if an update is available. Then contact the sound driver hardware or the computer manufacturer to request an updated sound driver.

To find out whether applicable driver updates are available, visit the following Microsoft Windows Update Web site:
http://update.microsoft.com (http://update.microsoft.com) If the sound driver is out of date, follow these steps to find the name and provider of your sound driver:
1. Click Start and then click Run.
2. Type dxdiag in the Open box, and then click OK.
3. Click the Sound tab.
4. Under Device, look for Name, and under Driver, look for Provider.
5. Click Exit.
Thank you....

Jan 29, 2009 | HP Sound Card

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