Answer:
Phase changes typically occur when the temperature or pressure of a system is altered. When temperature or pressure increases, molecules interact more with each other. When pressure increases or temperature decreases, it's easier for atoms and molecules to settle into a more rigid structure.
Explanation:
Hope it helps UvU
Answer:
D. If the pH of NaOH is 12, then that of Na₃PO₄ solution has to be lesser than 12.
Explanation:
In this problem, we are comparing the pH of a strong base to a weak base. A strong base is one that ionizes completely in aqueous solutions where as a weak base ionizes slightly.
The pH scale is good tool for measuring the acidity and alkalinity of various substances. It ranges from 1 - 14;
1 7 14
← →
increasing acidity increasing alkalinity
neutrality
Strong bases have their pH value close to 14 and weak bases are close to 7.
Since Na₃PO₄ is a weak base, it will have lesser pH value compared to a strong base such as NaOH
Answer:
163.2 g of Li₃PO₄ are made in the reaction
Explanation:
In first place we determine the reaction, to see stoichiometry.
The reactants are Li and Pb₃(PO₄)₂; the products are Li₃PO₄ and Pb
Equation: 6Li + Pb₃(PO₄)₂ → 2Li₃PO₄ + 3Pb
6 moles of Li can produce 2 moles of lithium phosphate
Therefore, 4.22 moles of Li will produce (4.22 . 2) / 6 = 1.41 moles of Li₃PO₄
Let's convert the amount to mass, to find the answer:
1.41 mol . 115.79 g / 1mol = 163.2 g
Answer:
Precipitation is any liquid or frozen water that forms in the atmosphere and falls back to the Earth. It comes in many forms, like rain, sleet, and snow. ...
<u>Answer:</u> The density of sugar is 
<u>Explanation:</u>
To calculate the density of a substance, we use the equation:
We are given:
Mass of sugar = 316 g
Volume of box = 
Putting values in above equation, we get:
Hence, the density of sugar is
