A build up of electric charge on an object
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Static electricity just did the test
Related Questions
2PESWhat is the correctly rounded answer of thee following calculation:23.7 / 4.9 =?0 4.80450 4.84O 4.83
The decayed organic material that gives soil its dark brown or black color is calledA) clay. B) humus. Eliminate C) loam. D) silt.
The atomic weight of an unknown element, in atomic units (amu), is approximately 20% less than that of calcium, the atomic weight of calcium is 40 amu. Which of the following best approximates the atomic weight, in amu, of the unknown element? (a) 8 (b) 20 (c) 32 (d) 48
The first table was arranged by atomic mass, but later Mosely improved it by arranging by _______________.
like gold,
but shatter into many pieces when struck by a
hammer, Iron Pyrite is..........
Answers
Explanation:
When gold is hammered it "squishes". Iron Pyrite is
known as "Fool's Gold". It is not..........
like gold,
but shatter into many pieces when struck by a
hammer, Iron Pyrite is..........
Final answer:
Gold is a malleable metal, able to deform without breaking when hammered. On the contrary, Iron Pyrite or 'Fool's Gold' is brittle; it shatters when struck due to its lack of malleability.
Explanation:
Gold is known as a malleable metal, which means it can be hammered or bent into different shapes without breaking. In contrast, Iron Pyrite, often known as 'Fool's Gold', is brittle, meaning it will shatter or break when struck by a hammer.
Malleability is a physical property of metals that allows them to be hammered or rolled into thin sheets. Gold is one of the most malleable metals and can be hammered into extremely thin sheets.
On the other hand, a brittle material like Iron Pyrite lacks this property of malleability. Instead of deforming under stress, it will fracture, this is why it shatters into many pieces when struck.
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Answers
7.2 x 1032 kg
2.7 x 108 kg
9.0 x 10-1 kg
7.2 x 10-16 kg
Answers
energy given=8.1 x 10^16 joules
speed of light = 3.00 × 10^8 m/s
plug in the values we'll get mass=9.0 x 10-1 kg
Answer : The mass lost in this reaction will be,
Explanation :
According to the Einstein equation, the energy is equal to the product of mass and the square of the speed of light.
The mathematical expression is :
where,
E = energy released =
c = speed of light =
m = mass lost = ?
Now put all the given values in the above formula, we get the mass lost in the reaction.
Therefore, the mass lost in this reaction will be,
(B) CH₃CH₂CH₂OH < CH₃CH₂CH₂CH₃ < HOCH₂CH₂OH
(C) CH₃CH₂CH₂CH₃ < HOCH₂CH₂OH < CH₃CH₂CH₂OH
(D) HOCH₂CH₂OH < CH₃CH₂CH₂OH < CH₃CH₂CH₂CH₃
(E) HOCH₂CH₂OH < CH₃CH₂CH₂OH < CH₃CH₂CH₂CH₃
Answers
Answer:
83
Explanation:
eighty-three
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According to the concept of Avogadro's number, there are 0.0948 moles of silver present in 5.71×10²² atoms of silver.
What is Avogadro's number?
Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.
It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .
According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.
Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number
Therefore, number of moles=number of atoms/Avogadro's number
number of moles=5.71×10²²/6.023×10²³=0.0948
Thus, there are 0.0948 moles in 5.71×10²² atoms of silver.
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N=n×Nav
n=N / Nav
(5.71×10^22) / (6.02×10^23)
n=0.09mol