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2 years ago

Find the number of neutron in an atom represented by 45X21

Chemistry

1 answer:

Helga [31]2 years ago

5 0

Answer:

My school has no stationary and my teacher has no stationary

Explanation:

cuz i am smart duh

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When the ocean washes farther up shore

Luba_88 [7]

High tide is when the ocean rises

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2 years ago

How many particles are in 2.0 moles of CH4

Whitepunk [10]

Answer: There are 4.8 x 1024 hydrogen atoms in 2.0 moles of CH4

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1 year ago

Read 2 more answers

I. Witch direction does the electric field point at a position directly west of a positive charge

RUDIKE [14]

Answer:

The answer is North

Explanation:

The direction of the field is taken to be the direction of the force it would exert on a positive test charge.

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2 years ago

What is Gay lussac's law

k0ka [10]

Explanation:

Gay-Lussac's law states that the pressure of a given mass of gas varies directly with the absolute temperature of the gas when the volume is kept constant. Mathematically, it can be written as: {\displaystyle {\frac {P}{T}}=k}. It is a special case of the ideal gas law.

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2 years ago

A 17.4 L sample of oxygen gas (O2) was collected at a temperature of 23.0°C and a pressure of 2.18 atmospheres. What volume woul

timofeeve [1]

The volume of the gas at STP = 35.01 L

<h3>Further explanation</h3>

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure).

In general, the gas equation can be written

$\large {\boxed {\bold {PV = nRT}}}$

where

P = pressure, atm

V = volume, liter

n = number of moles

R = gas constant = 0.08206 L.atm / mol K

T = temperature, Kelvin

V=17.4 L

T = 23 + 273 = 296 K

P = 2.18 atm

$\tt mol=n=\dfrac{PV}{RT}\\\\n=\dfrac{2.18\times 17.4}{0.082\times 296}\\\\n=1.563$

The volume of the gas occupy at STP :

$\tt 1.563\times 22.4=35.01~L$

6 0

2 years ago