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dimulka [17.4K]
3 years ago
8

An engineer that designs buildings is a (n)

Chemistry
1 answer:
guapka [62]3 years ago
7 0
An architectural engineer.<span />
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The total amount of _________ is the same before and after any transformation
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Energy. Energy cannot be destroyed nor created only transformed into different forms of energy.
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How many people could the blue-ringed octopus paralyze?​
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How many grams of CuSO4 are there in 100.0 g of hydrate? How many moles?
lapo4ka [179]
The hydrate form of CuSO4 has 5 water molecules (CuSO4-5H20) copper (II) Sulfate pentahydrate or commonly known as blue vitriol. 

To solve, the following molar masses are to be known. 
CuSO4.5H2O (hydrate)  - 249.7g/mole
CuSO4 (anhydrous) -159.6g/mole
Also there molar ratio of the hydrate and CuSO4 is 1. 

the mass of the hydrate is to be divided by the molar mass of the hydrate then multiplied by the ratio (1) to get the moles of hydrate and multiplied by the molar mass of the anhydrous to get the mass in grams. 

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8 0
3 years ago
An experiment is performed using 7 liquids; Methanol, Ethanol, Propanol, Butanol, Water, Pentane and Acetone.
charle [14.2K]
A). The weaker the IMF the lower the evaporation rates of each liquid. So Pentane had the weakest IMF and Butanol has the strongest.

b).They all evaporate at different rates because of their differences in their bonds. Not all liquids are the same and they will all most likely evaporate at different times
7 0
3 years ago
Ethanol is produced industrially by the reaction of ethylene with water in the presence of an acid catalyst. How many grams of e
nikdorinn [45]

Answer: 249 grams

Explanation:

The balanced chemical equation is :

C_2H_4+H_2O\rightarrow C_2H_5OH

As water is present in excess , it is called as excess reagent and ethylene is the limiting reagent.

According to stoichiometry:

1 mole of ethylene produces = 1 mole of ethanol

Thus 5.40 mole of ethylene produces =\frac{1}{1}\times 5.40=5.40 mole of ethanol

Mass of ethanol = moles\times {\text {molar mass}}=5.40mol\times 46.07g/mol=249g

Thus 249 g of ethanol are produced from 5.40 mol of ethylene

8 0
3 years ago
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