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3 years ago

( I’ll give first person who answers brainliest )

2 answers:

3 0

>Electrons move in circular orbits around the nucleus. Electrons are held in an atom by their attraction to each other. Electrons are evenly distributed throughout a mixture of positive and neutral particles.<

likoan [24]3 years ago

3 0

A.) Electrons move in circular orbits round the nucleus

Hope this helps! :)

(This may be wrong, sorry if I am)

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At what temperature (in °C) would one liter of phosphine gas, PH3, have a mass of 1.725 g, if the gas pressure is 0.9910 atm? As

Nutka1998 [239]

Answer: Temperature of one liter of phosphine gas with a mass of 1.725 g and gas pressure of 0.9910 atm is $-36^0C$

Explanation:

According to the ideal gas equation:

PV=nRT

P = Pressure of the gas = 0.9910 atm

V= Volume of the gas= 1.0 L

T= Temperature of the gas in kelvin = ?

R= Gas constant = $0.0821Latm/Kmol$

n= moles of gas= $\frac{\text {given mass}}{\text {molar mass}}=\frac{1.725g}{34g/mol}=0.051ol$

$0.9910atm\times 1.0=0.051\times 0.0821\times T$

$T=236.7K=(236.7-273)^0C=-36.3^0C$

Thus the temperature (in °C) of one liter of phosphine gas with a mass of 1.725 g and gas pressure of 0.9910 atm is $-36.3^0C$

5 0

4 years ago

How many grams of NaOH would be required to make 1.0 L of a 1.5 M solution

omeli [17]

60 grams are required.

Hope this helped you!

4 0

3 years ago

Which process uses energy to combine inorganic molecules to synthesize organic molecules

alekssr [168]

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can be later released to fuel the organisms activities.

7 0

3 years ago

A drag racing vehicle travels from 0 to 100 mph in 5 seconds north.what is the acceleration

arsen [322]

100mph = 100m/h

= 100m/h * 1 h/3600sec

= 0.028m/sec

= 0.028m/sec /5sec

= 0.055m/sec^2

6 0

4 years ago

What is one reaction that will form an arrhenius base?.

maksim [4K]

Answer:

An alkaline solution is another name for a solution that is basic. All alkali metals react readily with water to produce the metal hydroxide and hydrogen gas. The resulting solutions are basic.

8 0

2 years ago