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erica [24]
3 years ago
5

If a measurement is said to be precise this means that it is what​

Chemistry
2 answers:
Drupady [299]3 years ago
7 0

Answer:

See below.

Explanation:

A precise measurement means that in a repetition of an  experiment the results are all very close. Note precise is not always the same as accurate. If there is say 32.0% of lead in a sample of lead ore and 2 analyses  give results of 31.92% and 31.93% they are very precise, but if another 2 analyses give results of  31.95% and 32,05% they are less precise but more accurate.

Gala2k [10]3 years ago
6 0

On point? Do you have any options?

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Matter can be measured in many ways for specific purposes which measurement depends on the force of gravity and is not a reliabl
dlinn [17]

Answer:True But matter can take up much space and is stronger than  density and gravity

Explanation: Gravity is like a force that just pull on objects now if you get down to the magnets well magnetism is the strongest force on earth that could be connected through the core

7 0
3 years ago
Read 2 more answers
A 50.5 L flask contains 3.25 mol of an unknown gas at 288.6 K, what is the pressure of<br> this gas?
Ivahew [28]

Answer:

1.52atm is the pressure of the gas

Explanation:

To solve this question we must use the general gas law:

PV = nRT

<em>Where P is pressure in atm = Our incognite</em>

<em>V is volume = 50.5L</em>

<em>n are moles of gas = 3.25moles</em>

<em>R is gas constat = 0.082atmL/molK</em>

<em>And T is absolute temperature = 288.6K</em>

To solve pressure:

P = nRT / V

P = 3.25mol*0.082atmL/molK*288.6K / 50.5L

P = 1.52atm is the pressure of the gas

3 0
3 years ago
What material was added to powdered rock during tuttle and bowen's experiments?
Rzqust [24]

Answer:

water was added to powdered rock

Explanation:

4 0
2 years ago
16. If the velocity of hydrogen molecule is 5 x 10^4cm sec-¹, then its de Broglie wavelength is
Aleks04 [339]

Answer:

Correct option is B)

According to de-Broglie, 

λ=mvh=6.023×10232×5×104cm/sec6.62×10−27ergsec=4×10−8cm=4Ao

5 0
2 years ago
Calculate the hydrogen-ion concentration (H+] for the aqueous solution in which [OH-1 is 1 x 10-12 mol/L.
Artemon [7]

Answer:If we have [H+][OH-]= Kw = 1.0 x 10^-14

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pH = - log [H+]= - log 1 x 10^-3 = 3 < 7

Explanation:

7 0
3 years ago
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