Cho 14,2g hỗn hợp Al, Fe, Cu vào 1,5 lít dung dịch HCL(vừa đủ) kết thúc phản ứng thu đc 8,96 lít khí ở điều kiện tiêu chuẩn và 3,2g chất rắn ko tan -Tính % khối lượng của mỗi kim loại trong hỗn hợp ban đầu -Tính nồng độ mol/l HCL đã dùng -Tính nồng độ mol/l của các chất thu đc sau phản ứng(coi thể tích thay đổi ko đáng kể) Hòa tan 9,28g hỗn hợp Mg và Fe vào dung dịch HCL 0,5M thu đc 4,48l khí ở điều kiện tiêu chuẩn -Tính % khối lượng mỗi kim loại ban đầu -Tính khối lượng muối thu đc sau phản ứng -Tính thể tích dung dịch axit đã sử dụng Mình cần gấp

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Activity two: just lemons, inc. production here's a one-batch sample of just lemons lemonade production. determine the percent yield and amount of leftover ingredients for lemonade production and place your answers in the data chart. hint: complete stoichiometry calculations for each ingredient to determine the theoretical yield. complete a limiting reactant-to-excess reactant calculation for both excess ingredients. water sugar lemon juice lemonade percent yield leftover ingredients 946.36 g 196.86 g 193.37 g 2050.25 g 89% just lemons lemonade recipe equation: 2 water + sugar + lemon juice = 4 lemonade mole conversion factors: 1 mole of water = 1 cup = 236.59 g 1 mole of sugar = 1 cup = 225 g 1 mole of lemon juice = 1 cup = 257.83 g 1 mole of lemonade = 1 cup = 719.42 g show your calculations below. analysis questions 1. based on taste observations only, which ingredients were in excess in the lemonade samples in activity one? in activity one the excess substances for each sample were the water and sugar. 2. based on the data in activity two, which excess ingredients are affecting the taste of the lemonade in the sample batch? 3. what can just lemons, inc. do during production to reduce the amount of excess ingredients and improve the taste of their lemonade? 4. try to reduce the amount of leftover ingredients by changing the amount of one, two, or all three starting ingredients. show your stoichiometric calculations below. 5. during factory inspection, just lemons, inc. discovered that a water valve to the lemonade mixing station was not functioning. once they repair it, more water will enter the mixing station. from what you know about the limiting and excess ingredients for current lemonade production, what advice would you give engineers about the upcoming increase in water?

What type of chemical reaction occurs between silver nitrate (agno3) and copper (cu)? the equation i was given is 2agno3 + cu —> 2ag+ cu(no3)2.