In the following diagram the counter clockwise torque is?

Chemistry

1 answer:

Alina [70]4 years ago

4 0

80Nm I'm pretty sure this is the answer if I'm wrong I'm sorry but I'm positive it the answer

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Mariah needs to identify a cause-and-effect relationship. Which type of investigation should she use?

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How much heat, in joules and in calories, must be added to a 75.0Â–g iron block with a specific heat of 0.449 j/g Â°c to increas

lianna [129]

Answer:

$Q=50,849.25J\\\\Q=12,153.3cal$

Explanation:

Hello!

In this case, given the mass, temperature change and specific heat, it is possible to compute the required heat in joules as shown below:

$Q=mC(T_2-T_1)\\\\Q=75.0g*0.449\frac{J}{g\°C}(1535\°C-25\°C)\\\\Q=50,849.25J$

Now, since 1 cal =4.184 J, this result in calories is:

$Q=50,849.25J*\frac{1cal}{4.184J}\\\\Q=12,153.3cal$

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What Size container do you need to hold 0.0459 mol of N2 gas at stp

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You need to calculate the volume of the container. To calculate the volume of this amount of N₂ gas we need to make the assumption that N₂ behaves like an ideal gas.

1 mole of an ideal gas under Standard Temperature and Pressure occupies 22,4 L so the calculations are as follows:

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So, the volume of the container should be 1,028 L or more.

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