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My name is Ann [436]
3 years ago
8

An engineer designing a new type of engine needs a liquid that can be heated and cooled quickly with as little exchange of energ

y as possible.
Which property should the engineer primarily look for in the liquid?
OA
low thermal conductivity
OB low specific heat capacity
oc high reactivity
OD high internal energy
OE high density
Chemistry
1 answer:
sdas [7]3 years ago
8 0

Answer:

B. low specific heat capacity

Explanation:

Due to the fact that the engineer should choose the liquids property because that's what he should focus on.

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How many atoms are in 45.22 moles of strontium​
AleksandrR [38]

Answer:

272.31× 10²³ atom of strontium

Explanation:

Given data:

Number of moles of strontium = 45.22 mol

Number of atoms = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

45.22 mol × 6.022 × 10²³ atom / 1 mol

272.31× 10²³ atom

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3 years ago
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marissa [1.9K]

Answer:

i believe it is titanium.

Explanation:

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True or False, the central atom in a molecule is the one with the highest electron affinity.
PtichkaEL [24]
False. Chlorine has the most.
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4 years ago
For the reaction 2NH3(g) + 2O2(g)N2O(g) + 3H2O(l) H° = -683.1 kJ and S° = -365.6 J/K The standard free energy change for the rea
BlackZzzverrR [31]

Answer:

\Delta G^{0} = -457.9 kJ and reaction is product favored.

Explanation:

The given reaction is associated with 2 moles of NH_{3}

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           \Delta G^{0}=\Delta H^{0}-T\Delta S^{0}   , where T represents temperature in kelvin scale

So, \Delta G^{0}=(-683.1\times 10^{3})J-(273K\times -365.6J/K)=-583291.2J

So, for the reaction of 1.57 moles of NH_{3}, \Delta G^{0}=(\frac{1.57}{2})\times -583291.2J=-457883.592J=-457.9kJ

As, \Delta G^{0} is negative therefore reaction is product favored under standard condition.

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