Answer:
True
Explanation:
Permanent artificial, temporary artificial and natural. They are classified by the way in which they have achieved magnetism and by how long they remain magnetic.
Answer: 5.844 grams of NaCl needed to make solution.
Explanation:
Answer:
4.1 moles
Explanation:
Applying
PV = nRT................ equation 1
Where P = pressure, V = volume, n = number of moles, R = molar gas constant, T = Temperature.
make n the subject of the equation
n = PV/RT.............. Equation 2
From the question,
Given: V = 35 L , P = 2.8 atm, T = 15 °C = (15+273) = 288 K, R = 0.083 L.atm/K.mol
Substitute these values into equation 2
n = (35×2.8)/(0.083×288)
n = 4.1 moles
The percent error in the initial measurement would be 6.47%
<h3>Percent Error</h3>
Percent error in any measurement is mathematically given as:
absolute error/true measurement x 100%
In this case;
True measurement = 1.34 qt
Absolute Error = 1.34 - 1.25
= 0.09 qt
Percent error = 0.09/1.34 x 100%
= 6.47%
More on percent error can be found here: brainly.com/question/3105259?referrer=searchResults
Number of particles in one mole of a pure substance
Explanation:
The avogadro's constant is the number of particles in one mole of a pure substance.
- A mole is a unit of quantity of particles.
- It can be likened to a quantity of things in everyday life like a dozen, a gross etc.
- A dozen is 12 units of substance.
- A mole contains 6.02 x 10²³particles.
- 6.02 x 10²³ is called the Avogadro's number or constant.
- This was proposed by Amedo Avogadro.
- A mole is the amount of a substance that contains the Avogadro's number of particles.
- The particles are atoms, molecules, formula units, ions, electrons, protons, neutrons e.t.c
learn more:
Avogadro's constant brainly.com/question/2746374
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