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kolezko [41]
3 years ago
7

Hi;) this is easy i just need someone to explain it to me

Chemistry
1 answer:
BigorU [14]3 years ago
4 0

Answer:

a

Explanation:

A Gamma rays is the best wavelength for an astronomer to use to study the composition of planets and stars

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Which of the following correctly identifies and explains the charge on an atom of<br> sodium?
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The best and most correct answer among the choices provided by your question is the fourth choice.

The data explains that sodium atoms hardly ever form 2+ ions.

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Hydrogen gas reacts with oxygen gas to form water. What is the excess reactant in this recation(Refer to the picture below to an
Studentka2010 [4]

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Whats the answer giving brainliest :)
MissTica
It’s is c, if you oook it’s the only clear answer
5 0
3 years ago
A fixed amount of gas at 25.0°C occupies a volume of 10.0 L when the pressure is 667 torr. Use Boyle's law to calculate the pres
zaharov [31]

Answer:

The pressure, when the volume is reduced to 7.88L, is 846 torr (option A)

Explanation:

Step 1: Data given

The temperature of a gas = 25.0°C

AT 25 °C the gas occupies a volume of 10.0L and a pressure of 667 torr.

The volume reduces to 7.88 L but the temperature stays constant.

Step 2: Boyle's law

(P1*V1)/T1 = (P2*V2)/T2

 ⇒ Since the temperature stays constant, we can simplify to:

P1*V1 = P2*V2

⇒ with P1 = the initial pressure 667 torr

⇒ with V1 = the initial volume = 10.0 L

⇒ with P2 = the final pressure = TO BE DETERMINED

⇒ with V2 = the final volume = 7.88L

P2 = (P1*V1)/V2

P2 = (667*10.0)/7.88

P2 = 846 torr

The pressure, when the volume is reduced to 7.88L, is 846 torr (option A)

6 0
3 years ago
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