3 years ago

How do you do b,c, and d

Chemistry

1 answer:

Alika [10]3 years ago

8 0

I have no idea I know it’s gonna be a number

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At what temperature would 2.10moles of N2 gas have a pressure of 1.25atm and fill a 25.0 L tank

hodyreva [135]

Answer:

$\large \boxed{\text{-92 $^{\circ}$C}}$

Explanation:

We can use the Ideal Gas Law and solve for T.

pV = nRT

Data

p = 1.25 atm

V = 25.0 L

n = 2.10 mol

R = 0.082 06 L·atm·K⁻¹mol⁻¹

Calculations

1. Temperature in kelvins

$\begin{array} {rcl}pV & = & nRT\\\text{1.25 atm} \times \text{25.0 L} & = & \rm\text{2.10 mol} \times 0.08206 \text{ L}\cdot\text{atm}\cdot\text{K}^{-1}\text{mol}^{-1} \times T\\31.25&=&0.09847T\text{ K}^{-1}\\T& = &\dfrac{31.25}{\text{0.098 47 K}^{-1}}\\\\& = &\text{181 K}\end{array}$

2. Temperature in degrees Celsius

$\begin{array} {rcl}T & = & (181 - 273.15) \, ^{\circ}\text{C}\\& = & -92 \, ^{\circ}\text{C}\\\end{array}\\\text{The temperature of the gas is $\large \boxed{\mathbf{-92 \, ^{\circ}}\textbf{C}}$}$

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3 years ago

I'm not really sure on how to test if it is a chemical or physical change....

kolezko [41]

Chemical change because it cannot be reversed

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4 years ago

Choose the correct simplification of x^12z^11/x^2z^4

PolarNik [594]

━━━━━━━☆☆━━━━━━━

▹ Answer

x¹⁰z¹⁵

▹ Step-by-Step Explanation

x¹²z¹¹/x²z⁴

Reduce

x¹⁰z¹¹ * z⁴

Calculate

x¹⁰z¹⁵

Hope this helps!

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3 years ago

Steel is an example of a pure substance because it is made up of two different metals melted together. (4 points) True False

Lunna [17]

Answer:

false

Explanation:

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4 years ago

1 mole = 1000 millimoles (mmol); 1millimole = 1000 micromoles (µmol). if a solution contains 38231 µmol, what is that amount in

Mrrafil [7]

1 mmol --------------------- 1000 µmol
( mmol ) -------------------- 38231 µmol

mmol = 38231*1 / 1000

mmol = 38231/ 1000

=> 38.231 mmol

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