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Nimfa-mama [501]
3 years ago
5

How many grams are there in 1.30x10^24 atoms of silver?​

Chemistry
1 answer:
Naddik [55]3 years ago
7 0

Answer:

7

Explanation: i just guessed because i need some points

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A gas has a volume of 56.3L when its temperature is 280 K. What will volume be at 220K?
Alex Ar [27]

Answer:

44.23 L

use pascal's formula

8 0
3 years ago
How many moles of oxygen must be placed
Annette [7]

0.24 moles of oxygen must be placed  in a 3.00 L container to exert a pressure of 2.00 atm at 25.0°C.

The variables given are Pressure, volume  and temperature.

Explanation:

Given:

P = 2 atm

V = 3 litres

T = 25 degrees or 298.15 K by using the formula 25 + 273.17 = K

R  = 0.082057 L atm/ mole K

n (number of moles) = ?

The equation used is of Ideal Gas law:

PV = nRT

n = \frac{PV}{RT}

Putting the values given for oxygen gas in the Ideal gas equation, we get

n = \frac{2 x 3}{0.082157 x 298.15}

  = 0.24

Thus, from the calculation using Ideal Gas law it is found that 0.24 moles of oxygen must be placed in a container.

Ideal gas law equation is used as it tells the relation between temperature, pressure and volume of the gas.

3 0
3 years ago
Read 2 more answers
4570 distance in kilometers
faust18 [17]
4570 distance in kilometers is 0.116078 hope this helps :)
4 0
3 years ago
The pKb value for aqueous ammonia at 25
Alex17521 [72]

The value of pka for NH_3 in an aqueous solution is 9.2.

<h3>What is Kb?</h3>

Kb denotes the base dissociation constant.

pKa + pKb =14  at 25 degree celcius.

pKa + 4.8 =14

pKa = 9.2

pKb is the negative base-10 logarithm of the base dissociation constant (Kb) of a solution.

It is used to determine the strength of a base or alkaline solution.

The value of pka for NH_3 in an aqueous solution is 9.2.

Learn more about pka here:

brainly.com/question/14124805

#SPJ1

8 0
2 years ago
0.249 g of a common diatomic gas occupies a volume of 250. ml at 120°c and 760 mmhg. using a periodic table, what is the identit
sergij07 [2.7K]
The answer is to google it
3 0
3 years ago
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