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ASHA 777 [7]
3 years ago
8

How many liters of water are required to dissolve 1.00 g of barium sulfate?

Chemistry
1 answer:
butalik [34]3 years ago
5 0
<span>It will take 409 liters of water to dissolve 1.00 grams of barium sulfate at 20°C Barium sulfate is almost insoluble in water. At 20°C, only 2.448 x 10^-3 grams will dissolve in 1 liter of water. So take the amount of barium sulfate and divide by its solubility. 1.00 / 2.448 x 10^-3 = 408.49 liters. Since we only have 3 significant figures, round the result to 3 figures. 409 liters</span>
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The doctor ordered 750ml of a 15 percent solution. the stock solution is 50 percent. how much stock solution and diluent are nee
garik1379 [7]
The doctor required a 15% 750mL solution. To lower the concentration of the solution, you have to add more diluting liquid. 

750mL * 0.15 = 112.5mL. This 112.5mL signifies the pure chemical or compound in the solution. This 112.5mL can be taken from the stock solution.

112.5 * 2 = 250mL of stock solution would be needed and 500 mL of the diluting agent should be added. Adding the two together would result to a 750mL solution of 15% concentration.  
3 0
2 years ago
Match the term with its correct charge. Positive charge. Negative charge. Neutral: No electric charge. A. electron B. neutron C.
Roman55 [17]

negative charge is electron

positive charge is a proton

no charge is neutron

4 0
3 years ago
Calcium phosphate consists of two ions chemically bonded together. What are charges of each ion?
sdas [7]

Answer: Ca^2+ and P^3-

Explanation:

7 0
3 years ago
What does the 3 indicate in 1s22s22p63s1?
Dahasolnce [82]
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Hope this helps! :)
6 0
3 years ago
Read 2 more answers
2NO (g) + O2 (g) →2NO2 (g) At equilibrium [NO] = 2.4 × 10 -3 M, [O2] = 1.4 × 10 -4 M, and [NO2] = 0.95 M.
azamat

Answer:

K=1.12x10^9

Explanation:

Hello there!

Unfortunately, the question is not given in the question; however, it is possible for us to compute the equilibrium constant as the problem is providing the concentrations at equilibrium. Thus, we first set up the equilibrium expression as products/reactants:

K=\frac{[NO_2]^2}{[NO]^2[O_2]}

Then, we plug in the concentrations at equilibrium to obtain the equilibrium constant as follows:

K=\frac{(0.95)^2}{(0.0024)^2(0.00014)}\\\\K=1.12x10^9

In addition, we can infer this is a reaction that predominantly tends to the product (NO2) as K>>>>1.

Best regards!

4 0
3 years ago
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