What is the atomic mass of w
Answers
Answer:
183.84 u
Explanation:
W (also known as "Tungsten") atomic number is 74 and atomic mass is 183.84 u
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b. neutrons
c. protons or neutrons
d. protons, neutrons or electrons
Answers
When neutrons are added to an atomic nucleus, energy is produced and this is called a fusion reaction. The answer is letter B. To be exact, two nuclei combine to produce a more stable nucleus. The positive charge on both nuclei result in a large electrostatic energy barrier to fusion.
The correct answer is c because the nuc are combing more protns and neutrons. The answer suposed to be protons and neutrons NOT PROTONS OR NEUTRONS?!!
Answers
This is on account of the substances that develop a solid are packed in a settled, firmly pressed geometric plan.
help you learn about yourself and how to get along with others
B.
show you a different aspect of the world
C.
give you a sense of belonging and a safe place to talk
D.
all of the above
Answers
Answer:
the answer would be d. all of the above
Answers
The liters of sea water must evaporate to produce 5.00 moles of magnesium hydroxide - 78.8 litres.
A mole is a special unit of quantity of a chemical species that contains exactly Avogadro's number of particles.
- The mass of one mole of an element or a compound, called the molar mass, can be found from a periodic table.
- The unit of molar mass is g/mol.
=> the molar mass of Mg(OH)₂
Mg + 2O + 2H
= (24.31) + (2×16) + (2×1.01)
= 58.33 gmol⁻¹.
then,
=> the number of moles:
n = m/M
=
= 0.0634 mol
=> the amount of water in liters needed to evapourate to produce 5.00 moles:
=>
=> 0.0634x = 5×1
=>
=> x = 78.8 litres.
Thus, the liters of sea water must evaporate to produce 5.00 moles of magnesium hydroxide - 78.8 litres.
learn more:
First we find the molar mass of Mg(OH)₂
Mg + 2O + 2H = 24.31 + 2×16 + 2×1.01 = 58.33 gmol⁻¹.
Then find the number of moles: n = m/M = 3.7 / 58.33 = 0.0634 mol
So now we know that 0.0634 mol are produced per litre of sea water.
Let the amount of water in litres needed to evapourate to produce 5.00 moles be x.
We can express this as a ratio.
0.0634 mol / 1 l = 5 mol / x l.
Solve for x by cross-multiplication:
0.0634x = 5×1
x = 5/0.0634 = 78.8 litres. (rounded to three significant figures)
Hope this helps!
B. Lower molar mass of particles
C. Higher velocity of particles
D. Reduced temperature
Answers
Reduced temperature leads to a lower rate of diffusion. Hence, Option (D) is the correct answer.
What is Diffusiion ?
Diffusion is the net movement of anything generally from a region of higher concentration to a region of lower concentration.
Diffusion is driven by a gradient in Gibbs free energy or chemical potential.
Therefore, Reduced temperature leads to a lower rate of diffusion. Hence, Option (D) is the correct answer.
Learn more about Diffusion here ;
#SPJ2
Answer:
d
Explanation:
test...
Answers
So: (1.53x10^3)/(275K) = V2/(372K)
V2= 2.07x10^3L