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vredina [299]
3 years ago
14

In order to measure the mass of water, it needs to be in a container.

Chemistry
1 answer:
ololo11 [35]3 years ago
5 0

Answer:

False

Explanation:

You can place a solid object directly on a scale, but a liquid always has to be in a container, and the container has weight, so most of the time its inaccurate. if it has an ice form technically you can weigh it very quickly before it melts. so Probably false.

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How many moles of oxygen gas (O2) are in a 2.50 L container at standard temperature and pressure?
Anon25 [30]

Hey there!:

1 mole O2 ----------------- 22.4 L  ( at STP )

( moles O2 ) -------------- 2.50 L

moles O2  = 2.50 * 1 / 22.4

moles O2 = 2.50 / 22.4

moles O2 =  1.12*10⁻¹


Answer B


Hope that helps!

6 0
4 years ago
2. Your company currently uses a process with a similar cost of materials that has an
lyudmila [28]

<u>Answer:</u>

<em>The returns of the company as it is given is already large that is 91% and to get an outcome even better is what it is getting now. There should be certain improvements that needs to be applied  with the </em><em>help of stoichiometric data gathered. </em>

<u>Explanation:</u>

Since the cost of materials cannot be affected and have to be bought under similar rate of cost of working or process can be decreased. By using  machines calculation and mechanical devices this come would be accurate and the laws would be minimised. Hence the companies outcome would increase.

7 0
3 years ago
Which pair of molecules have the same empirical formula?
slavikrds [6]
C- K4O8 and K2O4
K4O8/4 =KO2
K2O4/2 =KO2
8 0
3 years ago
What must be known to determine the nature of the salt formed from a weak acid and weak base?
Umnica [9.8K]
D the strength of both acid and base
4 0
3 years ago
The volume of a gas is proportional to number of moles of a gas is known as
Kay [80]

Answer:

A modern statement is: Avogadro's law states that, "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules." For a given mass of an ideal gas, the volume and amount (moles) of the gas are directly proportional if the temperature and pressure are constant.

3 0
3 years ago
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