A solid dissolves in abolishing forms from the mixing of 2 liquids
Answer:
Explanation:
All buffer solutions have an effective range in which the buffer has a good regulation of pH.
This range is calculated by: pKa-1 < pH < pKa+1
The pH we need to control should be in that range. So for the phosphoric acid:
1) => 2.2-1< pH < 2.2+1 => 1.2<pH<3.2
2) => 7.2-1< pH < 7.2+1 => 6.2<pH<8.2
3) => 12.7-1< pH < 12.7+1 => 11.7<pH<13.7
For a pH=7.4 using a phosphate buffer we need to use diacid phosphate ()
Answer:
The ocean waves cause erosion on the edge of the water.
Explanation:
Ex: You are at a beach, and the waves are very high today. As they come down faster and heavier, they push the water that was below them foward quickly which then erode the sand away.
Simple: They erode the sand at the water's edge.
Answer: 12.5 moles NaNO3
Explanation: solution attached.
First balance predict the products
Na+ Mg( NO3)2 => Mg + NaNO3
Next balance the chemical equation
2 Na + Mg(NO3)2 => Mg + 2 NaNO3
Solve for the moles of Na
175 g Na x 1 mole Na/ 14 g Na
Next compare the mole ratios of Na and NaNO3 based from the balanced equation.
2 moles Na : 2 moles NaNO3