Answer:
1. Students need to measure masses of the items.
2. Put baking soda and vinegar in a plastic bag and close it.
3. Mix the two, allowing for a reaction to occur.
4. Figure the mass of the plastic bag while the two components are inside.
5. The combined mass should be equal to what each weighed on their own.
Explanation:
Answer: $2.35
Explanation: You make 12 cards an hour and work for 8.5 hours so you would make 102 cards per day because 12x8.5=102. 102x5= 510. You would make 510 cards ever work week. 1,200 (the amount you need to make per week) ÷510(the amount of cards you make per week)= 2.35. You should sell 1 card for 2 dollars and 35 cents if you want to make around 1200 dollars per week.
Answer:
I
Explanation:
I dont know, man, that looks hard man. I wish i could help you right now but i got trampled over by a group of screaming goats. i think i got a concussion man, I canyt think straight.
The mineral is calcite.
Lustre — glassy; ∴ non-metallic
Hardness — between a fingernail (2.5) and a penny (3)
Streak — white
Specific gravity — 54/20 = 2.7
Colour —white
Acid reaction — Fizzes; ∴ a carbonate
The only carbonate mineral that satisfies all these criteria is calcite, CaCO₃.