1【题目】How many liters of a 60% alcohol solution must be added to 60.5 liters of a 90% alcohol solution to produce a 75% alcohol solution?( A.30.5 B.40 C.50 D.60.5 2How many liters of a 60% alcohol solution must be added to 60.5 liters of a 90% alcohol solution to p...
You should hold a dough piece horizontally in your left hand, put a suitable amount of filling onto the central part, fold the side around the filling, press the upper-central part of it firmly and make firm and nice lace from left to right around the fold edge to make your finished pr...
You are willing to go? [translate] a每天喝一些果汁对身体有好处 Every day drinks some fruit juice to have the advantage to the body [translate] aHow manymilliliters of the concentrated solution should be diluted to 500 mL to make 0.1M 怎么应该稀释被集中的解答的manymilliliters到500机器语言...
System of Equations:The total amount of the final solution and the total amount of solute in the final solution may be written as a system of equations. To find the needed value, the substitution method may be used to derive an equation conta...
Calculate the molarityof a solution prepared by dissolving 23.7 grams of KMnO4into enough water to make 750 mL of solution. This example has neither the moles nor liters needed tofind molarity, so you must find the number ofmolesof thesolutefirst. ...
aa pharmacist needs 15 liters 20% alcohol solution. she has only 15% alcohol solution and 30% alcohol solution on hand to make the mixture. how many liters of each solution should be combined to make the mixture? 药剂师需要15公升20%酒精解答。 她在手边有仅15%酒精解答和30%酒精解答做混合...
To work out molarity, you need to know the total volume of solution as well as the number of moles of solute. Divide the number of moles of solute by the number of liters of solution. For example, if you have 3.4483 moles of table salt in 10 liters of water, work out 3.4483 ÷ ...
How many liters of pure alcohol must be added to 10 liters of 15 percent alcoholsolution in order to obtain a mixture of 25 percent alcohol? 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 举报 x+10*15%=(10+x)*25%x+1.5=2.5+0.25xx=1/0.75=4/3 literneed 4/3 liters of...
3 liters of a 4% solution must be mixed with a 10% solution to get a 6% solution, how many liters of the 10% are needed? How many liters of a 20% solution of acid should be added to 10 liters of a 30% solution of acid to ob...
To find the molarity, you can divide the number of moles by the volume of the solute (in liters): 0.36molNaCl0.1L=3.6MNaCl This means that a 21% w/v solution of NaCl is the same as a 3.6 solution of NaCl. In this way, you can convert between concentration designations. References...