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Ann [662]
3 years ago
15

Unknown compounds can usually be identified based solely on their _____.

Chemistry
2 answers:
RideAnS [48]3 years ago
7 0
B reactivity  because compounds are made of atoms and molecules and you need to know what they react to to know what they are made up of. 
34kurt3 years ago
4 0
Hysical proprerties i think
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PLEASE HELP----
balandron [24]
Actual yield of Fe2(So4)3 = 18.5g

2FePo4 + 3Na2SO4 -> Fe2(SO4)3 + 2Na3PO4

Mole of FePO4 = mass of it / its molar mass =
25 g / (55.8 + 31 + 16*4) = 0.166 mol

every 2 mole of FePO4 will form 1 mole of Fe2(SO4)3

Mole of Fe2(SO4)3 produced = 0.166 / 2 = 0.0829 mol

0.0829 * (55.8*2 + 3*(32.1+ 16*4)) = 33.148 g of Fe2(SO4)3

18.5 / 33.148 * 100 = 55.8%

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3 years ago
Desertification
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A.) desertification is when you remove all the trees and most of the plant life in an ares
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4 years ago
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What does ClF3 stand for
Nostrana [21]

Answer:

CHLORINE TRIFLUORIDE

Explanation:

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3 years ago
What is a tropical rainforests
juin [17]
The answer would be the first one.
6 0
3 years ago
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Mothballs are composed primarily of the hydrocarbon naphthalene (C10H8). When 1.025 g of naphthalene is burned in a bomb calorim
Serggg [28]

Answer:

\Delta E_{rxn} for combustion of naphthalene is -5164 kJ/mol

Explanation:

\Delta E_{rxn}=C_{calorimeter}\times \Delta T_{calorimeter}

where, C refers heat capacity and \Delta T refers change in temperature.

Here, \Delta T_{calorimeter}=(32.33-24.25)^{0}\textrm{C}=8.08^{0}\textrm{C}

So, \Delta E_{rxn}=(5.11\frac{kJ}{^{0}\textrm{C}})\times (8.08^{0}\textrm{C})=41.3kJ

\Delta E_{rxn} is generally expressed in terms of per mole unit of reactant. Also, \Delta E_{rxn} should be negative as it is an exothermic reaction (temperature increases).

Molar mass of naphthalene is 128.17 g/mol

So, 1.025 g of naphthalene = \frac{1.025}{128.17}moles of naphthalene

                                              = 0.007997 moles of naphthalene

\Delta E_{rxn}=-\frac{41.3kJ}{0.007997mol}=-5164kJ/mol

5 0
3 years ago
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