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Answer:
Also called iodide, iodine is a type of mineral that's naturally found in the earth's soil and ocean waters. Many salt water and plant-based foods contain iodine, and this mineral is most-widely available in iodized salt. It's important to get enough iodine in the diet.
Explanation:
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Answer: -
405 mL
Explanation: -
Initial Pressure P 1 = 0.6 atm
Final Pressure P 2 = 0.2 atm
Initial volume V 1 = 135 mL
Using Boyle's Law,
At constant temperature,
P 1 x V 1 = P 2 x V 2
0.6 atm x 135 mL = 0.2 atm x V 2
Final volume = V 2 = 
= 405 mL
Thus if a sample of gas has a volume of 135 ml at 0.600 atm. 405 mL would be the volume if the pressure is decreased to 0.200 atm while temperature is held constant.
Answer:
0.542M HCl
Explanation:
The reaction of H₂SO₄ with NaOH is:
H₂SO₄ + 2 NaOH → 2H₂O + Na₂SO₄
<em>Where 1 mole of acid reacts with 2 moles of NaOH</em>
Moles of H₂SO₄ are:
0.0500L × (0.361mol / L) = 0.01805 moles H₂SO₄
Thus, moles of NaOH that neutralize this acid are:
0.01805 moles H₂SO₄ × (2 mol NaOH / 1 mol H₂SO₄) = 0.0361 moles NaOH
And concentration is:
0.0361 moles NaOH / 0.0200L = <em>1.805M</em>
And, reaction of NaOH with HCl is:
NaOH + HCl → H₂O + NaCl
<em>Where 1 mole of NaOH reacts per mole of NaOH</em>
As you use 30.0mL = 0.0300L of NaOH to neutralize the HCl acid, moles of acid are:
0.0300L × (1.805mol / L) = 0.05415 moles NaOH = moles HCl
In 0.1000L:
0.05415 moles HCl / 0.1000L = <em>0.542M HCl</em>
