When a block of ice is placed in a frying pan, it is first in a solid state, meaning that the particles are moving slowly and are tightly compacted together as well as vibrating. As the the temperature of the pan increases, the state of matter will go from a solid to a liquid, which will cause the thermal energy in the ice cube to increase and the particles will go from a vibrating state, to sliding state. By this time the ice will now be water. As the temperature of the pan continues to increase, the water will eventually become water vapor and turn into a gas because as the particles are heated, they will move faster causing them to expand.
385 L is the volume of the air mattress with 0.55 moles of air inside the mattress and a temperature of 295 K.
<h3>What is an ideal gas equation?</h3>
The ideal gas law (PV = nRT) relates to the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).
Using the gas law,
PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.
Given data:
P= 3.5 kPa
V=?
n= 0.55 moles of air
T= 295K
R= 8.314 (L kPa/mol K)
Putting value in the given equation:
V=
V =
V = 385.4132857 L
And whatever the significant figure is asked for, for example, 3 significant figures: the answer would be 385 litres.
Hence, 385.4132857 L is the volume of the air mattress.
Learn more about the ideal gas here:
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If you look at the Periodic Table of Elements, all three of those qualities increase as you move from left to right and bottom to top, so that they are max at the top right corner.
In your question all three qualities are low, so the element is likely in the bottom left portion of the table.
You may want to see if this area contains only one kind of element.
Answer: The correct option is C.
Explanation: Average velocity is defined as the displacement divided by the total time taken by the object.
Mathematically,
We are given, the distance between the two towns and also the total time, so we can easily calculate the average velocity.
Hence. the correct option is C.
Answer:
149.1 g KCl
Explanation:
2 K + Cl₂ ⇒ 2 KCl
This is your chemical equation. Use this equation to figure out the stoichiometry between Cl₂ and KCl. According to the equation, for every 2 moles of KCl, you need 1 mole of Cl₂, making the ratio between KCl and Cl₂ 2/1.
First, convert grams of Cl₂ to moles of Cl₂. The molar mass is 70.906 g/mol.
(70.90 g Cl₂)/(70.906 g/mol) = 0.9999 mol Cl₂
Convert moles of Cl₂ to moles of KCl using the stoichiometric relationship.
(0.9999 mol Cl₂) × (2 mol KCl/1 mol Cl₂) = 1.9998 mol KCl
Convert moles of KCl to grams of KCl. The molar mass is 74.55 g/mol.
(1.998 mol KCl) × (74.55 g/mol KCl) = 149.1 g KCl
You will produce 149.1 g KCl.