reactivity! when something reacts to another substance, its a chemical change. When something melts, boils, or changes color, it is still the same substance, therefore is physical
all i really know is that STP (standard temperature and pressure) represents conventional conditions established by IUPAC with T = 273.15 K, P = 1 atm . Now putting these values of temperature and pressure at STP, we can calculate easily volume occupied by 1 mol of gas and which comes out to be 22.4 L. hope this helps
Your answer is:
C. Electron
Titration is used for monitoring the effect of acid rain on drinking water because tiration is<span> very established, reliable, and accurate method. </span><span>A wide variety of reagents can be used, making it very versatile; a lot of different substances can be analysed.</span>
Answer:
0.0898M is the molarity of the basic solution
Explanation:
The reaction of calcium hydroxide, Ca(OH)₂ with H₃PO₄ is:
3 Ca(OH)₂ + 2 H₃PO₄ → 6H₂O + Ca₃(PO₄)₂
To solve this question we must find the moles of H3PO4 that react. With the moles and the rection we can find the moles of Ca(OH)2. Using its volume we can find its molarity:
<em>Moles H3PO4:</em>
0.0189L * (0.200mol / L) = 0.00378 moles H3PO4
<em>Moles Ca(OH)2:</em>
0.00378 moles H3PO4 * (3mol Ca(OH)2 / 2mol H3PO4) = 0.00567 moles Ca(OH)2
<em>Molarity:</em>
0.00567 moles Ca(OH)2 / 0.06315L =
<h3>0.0898M is the molarity of the basic solution</h3>
