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statuscvo [17]
3 years ago
14

Gems called rubies are used in lasers. true or false

Chemistry
2 answers:
VLD [36.1K]3 years ago
8 0
True. There are such things as ruby lasers that use a synthetic ruby crystal as its gain medium. 
matrenka [14]3 years ago
4 0
The answer you are looking for is true
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Liquid sample a has a higher vapor pressure than liquid sample b (both in closed containers). what can be said about sample a co
Andreas93 [3]
Vapor pressure is a criteria for a substance's volatility. This is the ability of a substance to transition from liquid to vapor. When the vapor pressure equals the external pressure, liquid turns to gas. Hence, if the substance has higher vapor pressure, then it is volatile. <em>Therefore, Sample A is more volatile than Sample B.</em>
8 0
3 years ago
Which of these is a chemical property of a substance?
valentinak56 [21]
Color, the other answers arent changing the substance into something different
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3 years ago
Determine how many liters of hydrogen adjusted to STP there are in a 50.0 liter steel cylinder if the pressure inside is 100.0 a
Dvinal [7]

Answer : The volume of hydrogen gas at STP is 4550 L.

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas = 100.0 atm

P_2 = final pressure of gas at STP = 1 atm

V_1 = initial volume of gas = 50.0 L

V_2 = final volume of gas at STP = ?

T_1 = initial temperature of gas = 27.0^oC=273+27.0=300K

T_2 = final temperature of gas at STP = 0^oC=273+0=273K

Now put all the given values in the above equation, we get:

\frac{100.0atm\times 50.0L}{300K}=\frac{1atm\times V_2}{273K}

V_2=4550L

Therefore, the volume of hydrogen gas at STP is 4550 L.

3 0
3 years ago
Вычислить равновесные концентрации частиц в растворе, содержащем 0,01 моль/л Cu(NO3)2 и 1,0 моль/л NH3.
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Answer:

i dOnT SpEaK uR lAnGuAgE

Explanation:

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3 years ago
a sample of gold is heated from 12 degrees to 28 degrees celsius and absorbs 460 joules of energy. What is the mass of gold?
Gemiola [76]

Answer:

hi friends I don't no answer so sorry sorry sorry

Explanation:

but you follow me and give me brainliest ok by by by by by

3 0
3 years ago
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