The answer should be granite
i’ve had the question before and i got granite
Answer:
At about 51 °C
Explanation:
Hello there!
In this case, according to the attached solubility chart of potassium nitrate, our first step for this problem is to calculate the grams of this solute in 100 g given that 23 g are soluble in 25 g of water:
![\frac{23g}{25g}=\frac{x}{100g}\\\\x= \frac{23g*100g}{25g}=92g](https://tex.z-dn.net/?f=%5Cfrac%7B23g%7D%7B25g%7D%3D%5Cfrac%7Bx%7D%7B100g%7D%5C%5C%5C%5Cx%3D%20%20%5Cfrac%7B23g%2A100g%7D%7B25g%7D%3D92g)
Thus, such solubility of 92 g in 100 g of water is exhibited at about 51 °C.
Regards!
Answer:
0.333 M
Explanation:
Step 1: Write the balanced equation
2 HCl(aq) + Mg(OH)₂(aq) = MgCl₂(aq) + 2 H₂O(l)
Step 2: Calculate the reacting moles of Mg(OH)₂
25.00 mL of a 0.200 M magnesium hydroxide react. The reacting moles of Mg(OH)₂ are:
![25.00 \times 10^{-3} L \times \frac{0.200mol}{L} = 5.00 \times 10^{-3} mol](https://tex.z-dn.net/?f=25.00%20%5Ctimes%2010%5E%7B-3%7D%20L%20%5Ctimes%20%5Cfrac%7B0.200mol%7D%7BL%7D%20%3D%205.00%20%5Ctimes%2010%5E%7B-3%7D%20mol)
Step 3: Calculate the reacting moles of HCl
The molar ratio of HCl(aq) to Mg(OH)₂ is 2:1. The reacting moles of HCl are:
![5.00 \times 10^{-3} molMg(OH)_2 \times \frac{2mol}{1molMg(OH)_2} =1.00 \times 10^{-2}molHCl](https://tex.z-dn.net/?f=5.00%20%5Ctimes%2010%5E%7B-3%7D%20molMg%28OH%29_2%20%5Ctimes%20%5Cfrac%7B2mol%7D%7B1molMg%28OH%29_2%7D%20%3D1.00%20%5Ctimes%2010%5E%7B-2%7DmolHCl)
Step 4: Calculate the molarity of HCl
![\frac{1.00 \times 10^{-2}mol}{30.00 \times 10^{-3}L} = 0.333 M](https://tex.z-dn.net/?f=%5Cfrac%7B1.00%20%5Ctimes%2010%5E%7B-2%7Dmol%7D%7B30.00%20%5Ctimes%2010%5E%7B-3%7DL%7D%20%3D%200.333%20M)
Just wright down the definition and some facts about phycology. wright down what you need to live . Wright down how many cells / bones you have in your body. Wright down how you’ve seen people act wether its bad or good. Wright down why you think people act like that . Wright down how the brain thinks( your body depends on your brain). Wright down how you can do breathing techniques to relax your brain. Wright about tension and headaches or about muscle dislodges on/in your head. That should be a complete summary/ essay
There are 70.90g of Cl2 in 1 mol (because 35.45g Cl in one mol). So 77.1g/70.9g≈1.0874 mol.