Jose found four turtle eggs sitting in the grass in his backyard. He plans to take them to a nature center near his house where a scientist will help them. Jose needs to design a closed container to transport them to the nature center. Two important criteria are that the eggs must be kept warm—at a temperature between 27–32 degrees Celsius (C), and the eggs must be protected so the shells do not break.
Jose wants to put a packet around the eggs that meet both criteria. He sets up three different possible combinations of water, calcium chloride, and baking soda in three different sandwich bags. Each bag represents a possible design for a packet. All three bags sit for the same amount of time.
Which design should Jose choose?
Answers: 1
Chemistry, 22.06.2019 00:30
Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.
Answers: 1
Chemistry, 22.06.2019 01:00
Which type of orbits are found in the principal energy level n = 2 a - s b - s, f c - s, d d - s, p e - s, p, d
Answers: 1
Chemistry, 22.06.2019 01:30
If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 kelvin and 1.21 atmospheres? 2 li (s) + 2 h2o (l) yields 2 lioh (aq) + h2 (g)
Answers: 3
Chemistry, 22.06.2019 04:40
Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)
Answers: 2
Jose found four turtle eggs sitting in the grass in his backyard. He plans to take them to a nature...
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