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Ahat [919]
3 years ago
13

1. Scientists are concerned about the global temperature rise, the increase in CO2 in our atmosphere, the melting glaciers and o

ther impacts of climate change and our over use of fossil fuels. Using your previous learning on climate change (term 1 and 2) and this new information on how climate change is delaying an ice age, what is your opinion on climate change?
Chemistry
1 answer:
lana [24]3 years ago
5 0

Answer:

Climate change is bad and ok in both ways , climate change makes places hotter and hotter and can be the reason on many things that have took place and with this there is also a good side on climate change ,that is that it is delaying an ice age so i do think that it is not as bad as it is commercialized to be.

Explanation:

Thats my opinion

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Which of the following fractions can be used in the conversion of 25 m3 to the unit cm3?
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The following data is given to find the formula of a Hydrate:
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The masses can be found by substractions:

  • Mass of CaSO₄.H2O (hydrate):

16.05 g - 13.56 g = 2.49 g

  • Mass of CaSO₄ anhydrate:

15.07 g - 13.56 g = 1.51 g

  • The mass of water is equal to the difference between the mass of the hydrate and the mass of the anhydrate:

2.49 g - 1.51 g = 0.98 g

  • The percent of water is found by the formula:

massWater ÷ massHydrate * 100%

0.98 g ÷ 2.49 g * 100% = 39.36%

  • The mole of water is calculated using water's molecular weight (18g/mol):

0.98 g ÷ 18 g/mol = 0.054 mol water

  • A similar procedure is made for the mole of salt (CaSO₄ = 136.14 g/mol)

1.51 g ÷ 136.14 g/mol = 0.011 mol CaSO₄

  • The ratio of mole of water to mole of anhydrate is:

0.054 mol water / 0.011 mol CaSO₄ = 0.49

In other words the molecular formula for the hydrate salt is CaSO₄·0.5H₂O

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