Answer:
4.15×10⁻²¹ moles of Sn
Explanation:
This question can be solved by a simple rule of three.
We know that 1 mol contains 6.02×10²³ particles.
In this case, our particles are the atoms, so:
6.02×10²³ atoms / 1 mol . 2500 atoms = 4.15×10⁻²¹ moles.
The knowledge of mol can be applied for everything:
A mol of molecules
A mol of atoms
A mol of a compound
The density of the metal is 7.11 g/mL.
<h3>What is the density of the metal?</h3>
The term density of the metal is defined as the ratio of the mass to the volume of the metal. The volume of the metal was obtained by the displacement method. The volume of water that was displaced is the volume of the metal.
Hence;
Mass of the metal= 56.188g - 1.429g = 54.759 g
Volume of the metal = 33.6mL - 26mL = 7.70 mL
Density of the metal = 54.759 g/ 7.70 mL
= 7.11 g/mL
Learn more about density:brainly.com/question/15164682
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Answer:
Explanation:
Using Gay lussac's law equation as follows;
P1/T1 = P2/T2
Answer:
The temperature is 30,92K
Explanation:
We use the formula PV=nRT. We convert the unit of pressure in kPa into atm.
101,325kPa----1atm
121kPa-------x=(121,3kPax 1 atm)/101,325kPa=1, 2 atm
PV=nRT---->T= (PV)/(RT)
T=(1,2 atm x 3L)/(1,42 mol x 0,082 l atm/K mol )= 30, 91721058 K
