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patriot [66]
2 years ago
9

Rectify the following equation 101 - 102 = 1 by moving just one digit

Chemistry
1 answer:
Diano4ka-milaya [45]2 years ago
7 0

Make 2 in 102 as the power of 10

10^2 = 100

101 - 10^2 = 101 - 100 = 1

Hope it helped:)

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A 4-g mass of NaOH is dissolved in 5mL of water.
lapo4ka [179]
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Volume in liters of solution :

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hope this helps!
6 0
3 years ago
at what temperature in celsius would a gas have volume of 13.5 L at a pressure of 0.723 atm, if it had a volume of 17.8 L at a p
Alex

Answer:

initial temperature=-3.31^{\circ}C

Explanation:

Assuming that the given follows the ideal gas nature;

P_1=0.723atm

V_1=13.5L

T_1=?

P_2=0.612atm

V_2=17.8L

T_2=28 ^{\circ}C =273+28K=301K

mole of gass will remain same at any emperature:

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

putting all the value we get:

T_2 =269.7K =-3.31 ^{\circ} C

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6 0
3 years ago
How many moles of gas occupy 98 l at a pressure of 2.8 atmosphere and a temperature of 292
lara [203]

Answer:

n = 11.45 mol

Explanation:

Given data:

Number of moles = ?

Volume of gas = 98 L

Pressure = 2.8 atm

temperature = 292 K

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

2.8 atm × 98 L = n × 0.0821 atm.L/ mol.K   × 292 K

274.4 atm.L = n ×  23.97atm.L/ mol

n = 274.4 atm.L /23.97atm.L/ mol

n = 11.45 mol

8 0
3 years ago
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