<span>The mass of one mole of sodium bicarbonate (aka NaHCO3) is equal to 1 * 22.99g/mol + 1 * 1.00g/mol + 1 * 12.01g/mol + 3 * 16.00g/mol = 83.91g/mol. From this, we can convert 4.2g of NaHCO3 to moles by dividing by 83.91g/mol, to get 0.050 moles of sodium bicarbonate.</span>
Concentration is the number of moles of solute in a fixed volume of solution
Concentration(c) = number of moles of solute(n) / volume of solution (v)
25.0 mL of water is added to 125 mL of a 0.150 M LiOH solution and solution becomes more diluted.
original solution molarity - 0.150 M
number of moles of LiOH in 1 L - 0.150 mol
number of LiOH moles in 0.125 L - 0.150 mol/ L x 0.125 L = 0.01875 mol
when 25.0 mL is added the number of moles of LiOH will remain constant but volume of the solution increases
new volume - 125 mL + 25 mL = 150 mL
therefore new molarity is
c = 0.01875 mol / 0.150 L = 0.125 M
answer is 0.125 M
Answer:
<h2>put the bigger number on top then add </h2>
Explanation:
41.369
Answer:
a.The waves are absorbed or reflected to capture images
Explanation:
How Things Work: TSA scanners use electromagnetic waves for detection. ... These waves are bounced off the body of the person being scanned to create a three-dimensional image on the computer. The backscatter units instead bounce low-level electromagnetic X-rays off the body to create an image on the computer
The law of conservation of energy or first law of thermodynamics
Explanation:
From the context we can infer that Mr. Jones was describing the law of conservation of energy.
According to the law of conservation of energy:
"energy is not created nor destroyed by can be transformed from one form to another" .
The captured energy is a form of energy and it is change into other forms in the ecosystem.
Energy is initially captured in the ecosystem by plants.
learn more:
Laws of thermodynamics brainly.com/question/3564634
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