A hard-water solution contains 4.8 g of calcium chloride. How much sodium phosphate in grams should be added to the solution to completely precipitate all of the calcium
Solved
Show answers
More tips
- C Computers and Internet How to Get Rid of Spam in ICQ?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- H Health and Medicine How to Cure Adenoids?...
- H Health and Medicine Why Wearing a Back Brace Can Be Beneficial During Back Strain?...
- S Sport When and Where Will the 2014 World Cup be Held?...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Chemistry
- C Chemistry Underline context clues in the passage that help you determine the meaning of the word exasperation. The next day at school, bored and restless, Rameck, George, and Sampson...
- C Chemistry What is the volume of 1.2 moles of neon gas at STP...
- C Chemistry What two features must a sample have if it is to accurately represent a population...
- C Chemistry Choose the largest atom from each ofthe following groups. Explain your answer.a) O , N , C...
- C Chemistry On a separate sheet of paper, write equations for these neutralization reactions. 1. Hydrochloric acid and potassium hydroxide produce potassium chloride and water. 2. Sulfuric...
- C Chemistry A radioactive material initially has an activity of 800 counts per second. Eight hours later it has an activity of 200 counts per second. Find the materials half life...
- C Chemistry Amino acids are named after two of their functional groups: A) the amino group (NH2), which acts like a base, and the carboxyl group (COOH), which acts like an acid. B) Amino...
- W World Languages The outcome of the fight between turnus and aeneas explains why the language is called latin, but the people are called romans....
- P Physics Determine the number of ways the faces of a regular tetrahedron can be colored with three colors...
- H History Where did victoria beckham go to school at when she was growing up?...
Ответ:
4.7 g
Explanation:
The reaction that takes place is:
3CaCl₂(aq) + 2Na₃PO₄(aq) → Ca₃(PO₄)₂(s) + 6NaCl(aq)First we convert 4.8 g of CaCl₂ into moles, using its molar mass:
4.8 g ÷ 110.98 g/mol = 0.0432 mol CaCl₂Then we convert CaCl₂ moles into Na₃PO₄ moles, using the stochiometric coefficients of the balanced reaction:
0.0432 mol CaCl₂ *Finally we convert 0.0288 moles of Na₃PO₄ into grams, using its molar mass:
0.0288 mol Na₃PO₄ * 164 g/mol = 4.7 gОтвет:
1) vertical-Line test
2)y=x
3)x
4)domain
Step-by-step explanation: