All categories

3 years ago

Necesito ayuda con esto y si es necesario con procedimientos, gracias

Chemistry

2 answers:

BaLLatris [955]3 years ago

7 0

Answer:

sorry but I don't understand Spanish

otherwise I will definitely helps you

Setler79 [48]3 years ago

6 0

I don't understand Spanish but you can do this :)

You might be interested in

A molecular compound contains 92.3 % carbon and 7.7 % hydrogen by mass. If 0.142 mol of the compound weighs 11.08 g, what is its

Veronika [31]

Answer:

The molecular formula of the compound is C6H6

Explanation:

Step 1: Data given

Assume the mas = 100 grams

The compound contains:

92.3 % C = 92.3 grams C

7.7 % H = 7.7 grams

Step 2: Calculate moles

Moles = mass / molar mass

Moles C = 92.3 grams / 12.01 g/mol

Moles C = 7.685 moles

Moles H = 7.7 grams / 1.01 g/mol

Moles H = 7.62 moles

Step 3: Calculate mol ratio

We divide by the smallest amount of moles

C: 7.685 /7.62 = 1

H: 7.62 / 7.62 = 1

The empirical formula = CH

This formula has a molecular mass of 13.02 g/mol

Step 4: Calculate molecular mass

Molar mass = mass / moles

Molar mass = 11.08 grams / 0.142 moles

Molar mass = 78.02 g/mol

Step 5: Calculate molecular formula

For the molecular formula, we need the molecular weight:

78.02 / 13.02 = 6

We have to multiply the empirical formula by 6

6*CH = C6H6

The molecular formula of the compound is C6H6

6 0

4 years ago

Magnesium bromide as a subscript

DiKsa [7]

Answer:2

Explanation:

Because the oxidation number of magnesium is +2 and it s going to be exchanged with that of chlorine which is -1, so that chlorine carries the subscript of 2 and magnesium carries 1

5 0

3 years ago

Pick the statement that is INCORRECT. Question 1 options: Climate can be described based on a specific event. Weather happens at

Shalnov [3]

Answer:

The statement that is Incorrect is -<u>Climate can be described based on a specific event</u>

Explanation:

<u>Climate is variable because it depends on a number of variable factors like the temperature, humidity, atmospheric pressure, wind, rainfall, and other meteorological elements on the Earth's surface ..</u>

5 0

4 years ago

PLZZZ HELP MEEEE!!!!! I WILL GIVE BRAINLIEST!!!!!!!!!

Alja [10]

Answer:

PV ∝ T

Explanation:

Charles’ law states that, at constant pressure, volume is proportional to

temperature. Gay-Lussac’s law states that, at constant volume, pressure is proportional to

temperature. Therefore, the product of pressure and volume is proportional to temperature.

This is also consistent with Boyle’s law, which states that pressure is inversely proportional

to volume when temperature is constant

Dis was easy as hell

4 0

3 years ago

A truck tire has a volume of 218 L and is filled with air to 35.0 psi at 295 K. After a drive, the air heats up to 318 K. (b) If

Alenkasestr [34]

The pressure (in psi) is 37.1

We are given the following information:

- The initial temperature of the air, $T_{1}=295 \mathrm{~K}$

- The initial pressure, $P_{1}=35.0 \mathrm{psi}$ .

- The initial volume, $V_{1}=208 \mathrm{~L}$

- The final temperature, $T_{2}=319 \mathrm{~K}$

- The increase in the volume is $2 \%$ , that is, $\Delta V=\frac{2}{100} V_{1}$ where $\Delta V$ is the increase in the volume.

The combined gas law states that a fixed amount of an ideal gas obeys the following equation: $\frac{P V}{T}=$ constant, where:

- P is the Pressure of the gas.

- V is the Volume of the gas.

- n is the number of moles of gas.

$R=8.31 \mathrm{~J} / \mathrm{mol} \mathrm{K}=0.0821 \mathrm{~L} \cdot {atm} / \mathrm{mol} \cdot \mathrm{K}$ is the Universal Gas constant.

- T is the absolute temperature of the gas.

The final volume of the air is:

$\begin{aligned}V_{2} &=V_{1}+\Delta V \\&=V_{1}+\frac{2}{100} V_{1} \\&=\frac{102}{100} V_{1}\end{aligned}$

Equating the initial and final state, we have:

$\begin{aligned}\frac{P_{2} V_{2}}{T_{2}} &=\frac{P_{1} V_{1}}{T_{1}} \\\Rightarrow P_{2} &=\frac{V_{1}}{V_{2}} \times \frac{T_{2}}{T_{1}} \times P_{1} \\&=\frac{V_{1}}{102 V_{1} / 100} \times \frac{319 \mathrm{~K}}{295 \mathrm{~K}} \times 35.0 \mathrm{psi} \\& \approx 37.1 \mathrm{psi}\end{aligned}$

The ideal gas law states that a universal constant for an ideal gas is the ratio of the product of pressure and temperature to the product of the number of moles and absolute temperature. The resultant equation is known as the combined gas law if the number of moles in the ideal gas law is set to a constant.

Learn more about combined gas law brainly.com/question/13154969

#SPJ4

8 0

2 years ago