I read a presentation about this experiment.
Hypothesis: If I add salt to water, then it will take longer for the water to freeze.
The given variables were:
Controlled Variables:
1. Refrigerator
2. type of cups used (contains water and varying amount of salt)
Independent Variable
1. Amount of Salt
Dependent Variable
1. Amount of frozen water
Conclusion: Water with salt take longer to freeze.
Answer:
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Explanation:
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Answer:
2.25 moles
Converting Mass to Number of Moles
This the same as multiplying by the reciprocal of 40 g/mol. If the equation is arranged correctly, the mass units (g) cancel out and leave moles as the unit. There are 2.25 moles of NaOH in 90g of NaOH.
Answer:
It's about mass of 40.1⋅g
Explanation:
I hope this helps you out. Have a nice day!