2 years ago

What would happen to the amount of matter on Earth if mass were not conserved during the changes on states?

Chemistry

1 answer:

Mademuasel [1]2 years ago

3 0

What would happen to the amount of matter on earth if mass were not conserved during changes of state?

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3 years ago

A pump contains 1.5 L of air at 175 kPa. You draw back on the piston of the pump, expanding the volume until the pressure reads

Tresset [83]

Answer:

$\large \boxed{\text{86.8 L}}$

Explanation:

The temperature and amount of gas are constant, so we can use Boyle’s Law.

$p_{1}V_{1} = p_{2}V_{2}$

Data:

$\begin{array}{rclrcl}p_{1}& =& \text{0.579 atm}\qquad & V_{1} &= & \text{150 L} \\p_{2}& =& \text{1.00 atm}\qquad & V_{2} &= & ?\\\end{array}$

Calculations:

$\begin{array}{rcl}0.579 \times 150 & =& 1.00V_{2}\\86.85 & = & 1.00V_{2}\\V_{2} & = &\dfrac{86.85}{1.00}\\\\& = &\textbf{86.8}\\\end{array}\\\text{The new volume of the gas is } \large \boxed{\textbf{86.8 L}}$

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3 years ago

Which of the following elements has the largest atomic radius? (2 points)

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Cobalt
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2 years ago

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A buffer solution is prepared by adding 13.74 g of sodium acetate (NaC2H3O2) and 15.36 g of acetic acid to enough water to make

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Answer:

A buffer solution is prepared by adding 13.74 g of sodium acetate (NaC2H3O2) and 15.36 g of acetic acid to enough water to make 500 mL of solution.

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Explanation:

The pH of a buffer solution can be calculated by using the Henderson-Hesselbalch equation:

$pH=pKa+log\frac{[salt]}{[acid]}$

The pH of the given buffer solution can be calculated as shown below:

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