How much heat must absorbed by the reaction system to convert 100g of NaNO3 into NaHSO4(s)?

The volume of a gas is 550 mL at 960 mm Hg and 200.0 C. What volume

Masja [62]

Answer:

The volume will be 568.89 mL.

Explanation:

Boyle's law says that "The volume occupied by a given gaseous mass at constant temperature is inversely proportional to pressure"

Boyle's law is expressed mathematically as:

Pressure * Volume = constant

or P * V = k

Gay-Lussac's law indicates that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases. That is, the pressure of the gas is directly proportional to its temperature. Gay-Lussac's law can be expressed mathematically as follows:

$\frac{P}{T}=k$

Where P = pressure, T = temperature, K = Constant

Finally, Charles's law indicates that as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases. In summary, Charles's law is a law that says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

$\frac{V}{T}=k$

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

$\frac{P*V}{T} =k$

Studying an initial state 1 and a final state 2, it is fulfilled:

$\frac{P1*V1}{T1} =\frac{P2*V2}{T2}$

In this case:

P1= 960 mmHg
V1= 550 mL
T1= 200 C= 473 K (being 0 C=273 K)
P2= 830 mmHg
V2= ?
T2= 150 C= 423 K

Replacing:

$\frac{960 mmHg*550 mL}{473K} =\frac{830 mmHg*V2}{423 K}$

Solving:

$V2=\frac{423 K}{830 mmHg} *\frac{960 mmHg*550 mL}{473K}$

V2= 568.9 mL

<u><em>The volume will be 568.89 mL.</em></u>

4 0

3 years ago

Complete the equation: monosaccharide + monosaccharide → ______ + water Complete the equation: monosaccharide + monosaccharide →

otez555 [7]

Answer: Disaccharides

Explanation:

Disaccharides can be defined as the combination of two monosaccharides which combines together to form a disaccharides.

These are formed by the combination of sugars. The process is hydrolysis as it releases water after the reaction is complete.

Two monosachrrides are joined together by the glycosidic linkage. Some common examples are maltose, sucrose and lactose.

7 0

3 years ago

What is the molarity of a solution prepared by dissolving 30.0g NaCl in enough water to make a 0.300 L solution?

meriva

Answer:

D.) 1.71 M NaCl

Explanation:

Molarity equation: M= n/v

n= moles of solute

v=liters of solution

NaCl= 58.443 g/mol

30g NaCl / 58.443g/mol = 0.5133(this is n)

0.5133 mols/0.300 L=1.71115674 M

5 0

3 years ago

The Pfund series of lines in the emission spectrum of hydrogen corresponds to transitions from higher excited states to the n =

lys-0071 [83]

Answer:

$\large \boxed{\text{4650 nm}}$

Explanation:

The second line in the Pfund series corresponds to a transition from n = 7 to n = 5.

To calculate the wavelength of the transition, we can use the Rydberg equation:

$\dfrac{1}{\lambda} = R_{H}\left ( \dfrac{1 }{n_{1}^{2}} - \dfrac{1 }{n_{2}^{2}} \right )$

where

$R_{H} = 1.097 \times 10^{7} \text{ m}^{-1}$

If n₁ = 5 and n₂ = 7

$\begin{array}{rcl}\dfrac{1}{\lambda} & = & 1.097 \times 10^{7} \text{ m}^{-1}\left ( \dfrac{1 }{5^{2}} - \dfrac{1 }{7^{2}} \right )\\\\ & = & 1.097 \times 10^{7} \text{ m}^{-1}\left ( \dfrac{1 }{25} - \dfrac{1 }{49} \right )\\\\ & = & 1.097 \times 10^{7} \text{ m}^{-1}\left ( \dfrac{49 - 25 }{49 \times25}\right )\\\\& = & 1.097 \times 10^{7} \text{ m}^{-1}\left ( \dfrac{24 }{1225}\right )\\\\ & = & 2.149 \times 10^{7}\text{ m}^{-1}\\\end{array}\\$

$\begin{array}{rcl}\lambda & = & \dfrac{1}{2.149 \times 10^{7}\text{ m}^{-1}}\\\\ & = & 4.65 \times 10^{-6} \text{ m}\\ & = & \mathbf{4650} \textbf{ nm}\\\end{array}\\\text{The wavelength of the line is $\large \boxed{\textbf{4650 nm}}$, which is in the $\textbf{infrared region}$}.$

8 0

3 years ago

In 1687, ____ explained that gravitational forces hold the solar system together.

seraphim [82]

I believe that would be option A. Newton. I say this because he discovered gravity in the first place.

8 0

3 years ago