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3 years ago

Percent composition H2S2O8

Chemistry

1 answer:

AleksAgata [21]3 years ago

8 0

Answer:194.1411 g/mol

Explanation:

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Amanda pushes a box across the room with a force of 30 N. It accelerates at 5 m/s/s. What is the mass of the box? *

liraira [26]

Given:

Force (F) acting on the box = 30 N

Acceleration produced (a) = 5 m/s2

To determine:

The mass (m) of the box

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Formula: F = ma

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Frost forms when an outside surface cools past the dew point.

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The gas law for an ideal gas at absolute temperature T (in kelvins), pressure P (in atmospheres), and volume V (in liters) is PV

Sophie [7]

Answer:

The rate of change of T with respect to time is 0.40 K/min

Explanation:

The gas law equation is:

$PV = nRT$

We can find the rate of change of T with respect to time by solving the above equation for T and derivating with respect to time:

$\frac{dT}{dt} = \frac{d}{dt}(\frac{PV}{nR})$

$\frac{dT}{dt} = \frac{1}{nR}(V\frac{dP}{dt} + P\frac{dV}{dt})$

Where:

n: is the number of moles = 10 mol

R: is the gas constant = 0.0821

V: is the volume = 13 L

P: is the pressure = 8.0 atm

dP/dt: is the variation of the pressure with respect to time = 0.13 atm/min

dV/dt: is the variation of the volume with respect to time = -0.17 L/min

Hence, the rate of change of T is:

$\frac{dT}{dt} = \frac{1}{10*0.0821}(13*0.13 - 8.0*0.17) = 0.40 K/min$

Therefore, the rate of change of T with respect to time is 0.40 K/min

I hope it helps you!

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