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andre [41]
3 years ago
11

How many grams of cs in a sample of cs that contains the same number of moles as a 109 gram sample of sn

Chemistry
1 answer:
RideAnS [48]3 years ago
4 0

Answer:

122.04g

Explanation:

Cs is Caesium

Mass of Sn, tin = 109g.

Solution

we must first find the number of moles of the Sn from the given mass:

       number of moles = \frac{mass}{molar mass}

molar mass of Sn = 118.7g/mol

      number of moles =  \frac{109}{118.7} = 0.918moles

Now since the number of moles of the Sn is the sameas that of Cs, we can find the mass of Cs that will equal that.

Mass of Cs = number of moles x molar mass of Cs = 0.918 x 132.9 = 122.04g

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What is the mass of 6.02 × 1023 molecules of Fe2O3?
LenKa [72]

Answer: 160 g Fe2O3

Explanation: solution attached.

First convert molecules to moles using Avogadro's number then convert to mass using the relationship between moles and molar mass of Fe2O3

4 0
3 years ago
List 4 physical properties of each of the following:
OLEGan [10]
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4 0
3 years ago
7. How many moles of argon are there in 20.0 L, at 25 degrees Celsius and 96.8 kPa?
suter [353]
<h3>Answer:</h3>

              0.8133 mol

<h3>Solution:</h3>

Data Given:

                 Moles  =  n  =  ??

                 Temperature  =  T  =  25 °C + 273.15  =  298.15 K

                  Pressure  =  P  =  96.8 kPa  =  0.955 atm

                  Volume  =  V  =  20.0 L

Formula Used:

Let's assume that the Argon gas is acting as an Ideal gas, then according to Ideal Gas Equation,

                  P V  =  n R T

where;  R  =  Universal Gas Constant  =  0.082057 atm.L.mol⁻¹.K⁻¹

Solving Equation for n,

                  n  =  P V / R T

Putting Values,

                  n  =  (0.955 atm × 20.0 L) ÷ (0.082057 atm.L.mol⁻¹.K⁻¹ × 298.15 K)

                 n  =  0.8133 mol

4 0
3 years ago
Read 2 more answers
How many atoms are in 1.2x10^5 moles of neon?​
attashe74 [19]

Answer:

7.224 × 10^28 atoms

Explanation:

The number of moles contained in a substance (n) can be calculated from this expression:

nA = n × 6.02 × 10^23 atoms

Where;

nA = number of atoms of substance

n = number of moles of substance

Avagadro's number or constant = 6.02 × 10^23 atoms

Using nA = n × 6.02 × 10^23 atoms

In this question, there are 1.2 x 10^5 moles of neon (N). The number of atoms (nA) is as follows:

nA of neon = 1.2 x 10^5 × 6.02 × 10^23

nA = 7.224 × 10^ (5 + 23)

nA = 7.224 × 10^28 atoms

The number of neon atoms in 1.2 x 10^5 is 7.224 × 10^28 atoms.

5 0
2 years ago
Select all that apply. Which natural processes would have the most effect on Earth's atmosphere adding to the greenhouse effect?
JulijaS [17]
Ion know ask g00gle ?!?!?!?
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