3 years ago

true/false: a single atom of an element in molecular and empirical formulas does not require a subscript

1 answer:

7 0

That's true.

If a single atom of an element in a molecule required a subscript,
then water would be H₂O₁ , and salt would be Na₁Cl₁ .

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Describe how cool and warm air move in the atmosphere.

Anna [14]

Answer:

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Explanation:

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3 years ago

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pashok25 [27]

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8 0

3 years ago

A mass of 5 kg of saturated water vapor at 150 kPa is heated at constant pressure until the temperature reaches 200°C. Calculate

yulyashka [42]

Answer:

The work done by the steam is 213 kJ.

Explanation:

Given that,

Mass = 5 kg

Pressure = 150 kPa

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Using formula of work done

$W=Pm\DeltaV$

$W=Pm(\dfrac{RT_{1}}{P_{atm}}-\dfrac{RT_{2}}{P_{atm}}$

$W=\dfrac{PmR}{P_{atm}}(T_{2}-T_{1})$

Where,R = gas constant

T = temperature

P = pressure

$P_{atm}$ =Atmosphere pressure

m = mass

Put the value into the formula

$W=\dfrac{150\times10^{3}\times5\times287.05}{1.01\times10^{5}}\times(473-373)$

$W=213\ kJ$

Hence, The work done by the steam is 213 kJ.

6 0

3 years ago

When an object moves in uniform circular motion, the direction of its acceleration is?

Harrizon [31]

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2 years ago

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avanturin [10]

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5 0

2 years ago

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