20. Which of the following is the correct name for N205?
O nitrate oxide
O dinitrogen pentoxide
O nitrous oxide
O nitrogen dioxide

Answer:

[tex]P \approx 225atm[/tex]

Explanation:

From the question we are told that:

Moles of sample n=3.20_mol

Volume V=350mL

Temperature T=300k

Generally the equation for ideal gas is mathematically given by

 [tex]PV=nRT[/tex]

 [tex]P=\frac{nRT}{V}[/tex]

 [tex]P=\frac{3.20*0.08206*300}{350*10^{-3}}[/tex]

 [tex]P=225.079atm[/tex]

 [tex]P \approx 225atm[/tex]

Answer:

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Answer:

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Explanation:

let me know if you have any questions

Answer:

the first country that uses paper currency is china

the first use of paper currency can be traced back to the year 806 AD in China where they were used as flying currency

Answer:

The empirical formula of the compound is [tex]C_{0.504}HO_{1.008}[/tex].

Explanation:

We need to determine the empirical formula in its simplest form, where hydrogen ([tex]H[/tex]) is scaled up to a mole, since it has the molar mass, and both carbon ([tex]C[/tex]) and oxygen ([tex]O[/tex]) are also scaled up in the same magnitude. The empirical formula is of the form:

[tex]C_{x}HO_{y}[/tex]

Where [tex]x[/tex], [tex]y[/tex] are the number of moles of the carbon and oxygen, respectively.

The scale factor ([tex]r[/tex]), no unit, is calculated by the following formula:

[tex]r = \frac{M_{H}}{m_{H}}[/tex] (1)

Where:

[tex]m_{H}[/tex] - Mass of hydrogen, in grams.

[tex]M_{H}[/tex] - Molar mass of hydrogen, in grams per mole.

If we know that  [tex]M_{H} = 1.008\,\frac{g}{mol}[/tex] and [tex]m_{H} = 0.2\,g[/tex], then the scale factor is:

[tex]r = \frac{1.008}{0.2}[/tex]

[tex]r = 5.04[/tex]

The molar masses of carbon ([tex]M_{C}[/tex]) and oxygen ([tex]M_{O}[/tex]) are [tex]12.011\,\frac{g}{mol}[/tex] and [tex]15.999\,\frac{g}{mol}[/tex], then, the respective numbers of moles are: ([tex]r = 5.04[/tex], [tex]m_{C} = 1.2\,g[/tex], [tex]m_{O} = 3.2\,g[/tex])

Carbon

[tex]n_{C} = \frac{r\cdot m_{C}}{M_{C}}[/tex] (2)

[tex]n_{C} = \frac{(5.04)\cdot (1.2\,g)}{12.011\,\frac{g}{mol} }[/tex]

[tex]n_{C} = 0.504\,moles[/tex]

Oxygen

[tex]n_{O} = \frac{r\cdot m_{O}}{M_{O}}[/tex] (3)

[tex]n_{O} = \frac{(5.04)\cdot (3.2\,g)}{15.999\,\frac{g}{mol} }[/tex]

[tex]n_{O} = 1.008\,moles[/tex]

Hence, the empirical formula of the compound is [tex]C_{0.504}HO_{1.008}[/tex].

Answer:

Do you mean acids?

Due to chemical reaction

Explanation:

Acids are only stored in glass containers because glass containers rarely react with any substance.They dont react with acids and prevent chemical reaction so the acids can be kept. If acids were kept in metal containers it would react .

Answer: There are 1566 joules of heat needed to raise the temperature of 30.0 g of aluminum from 22°C to 80°C, if the specific heat of aluminum is 0.90 J/g°C.

Explanation:

Given: Mass = 30.0 g

Specific heat = [tex]0.90 J/g^{o}C[/tex]

[tex]T_{1} = 22^{o}C[/tex]

[tex]T_{2} = 80^{o}C[/tex]

Formula used to calculate the heat energy requires is as follows.

[tex]q = m \times C \times (T_{2} - T_{1})[/tex]

where,

q = heat energy

m = mass of substance

C = specific heat capacity of substance

[tex]T_{1}[/tex] = initial temperature

[tex]T_{2}[/tex] = final temperature

Substitute the values into above formula as follows.

[tex]q = m \times C \times (T_{2} - T_{1})\\= 30.0 g \times 0.90 J/g^{o}C \times (80 - 22)^{o}C\\= 1566 J[/tex]

Thus, we can conclude that there are 1566 joules of heat needed to raise the temperature of 30.0 g of aluminum from 22°C to 80°C, if the specific heat of aluminum is 0.90 J/g°C.

As the compound has alkyne as the functional group the correct option is A.

Functional group is defined as a substituent or a group of atoms or an atom due to which chemical reactions are carried out. Each functional group will react in the same way regardless to the parent carbon chain to which it is attached.This helps in prediction of chemical reactions.

The reactivity of functional group is increased by making modifications in the functional group .Atoms that  are present in functional groups are linked to each other by means of covalent bonds.They are named along with the organic compounds according to IUPAC nomenclature.

As the compound has alkyne as the functional group the correct option is A.

Learn more about functional group,here:

https://brainly.com/question/33836452

#SPJ4

Answer:

Its physical structure

Explanation:

Answer:

2,3-dimetylpentane

Explanation:

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Answer:

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Explanation:

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Answer:

Coal is burned at power plant.

Explanation:

the chemical Energy is released as coal changes

have a good day

Answer:

2.5×10^20atoms

Explanation:

number of moles= number of particles/Avogadro's constant

number of particles=Avogadro's constant × number of moles

number of particles=(6.02×10^23) × (4.1×10^-4)

number of particles=2.5×10^20

Answer:

C. Transpiration, evaporation, and sublimation.

Explanation:

thank you to the internet.

Answer:

steel, plastics

Hope it helps!

Answer:

0.73 and yes

Explanation:

The answers are 0.73 and yes! <3 ^-^

Answer:

Hydrologists study how water interacts with the earth's crust. For example, they may study how rainfall and snowfall cause erosion, create caves, percolate through soil and rock to become groundwater, or eventually reach the sea.Hydrologists strive to improve water quality and increase our access to water so that we can continue to make use of it in all the ways that are necessary to our lives. A hydrologist measures the stream flow in a tributary to the Coeur d'Alene River. layers of gases surrounding a planet or other celestial body

Answer:

Acoustic survey data can help inform scientists about the locations of the rainforest with the highest biodiversity. ... By working with these companies, The Nature Conservancy can help inform them of where they might try to create wildlife corridors or connected habitats on their lands

Answer: A long-term environmental change is... ice age, deforestation, urbanization, Earth's orbit, Sun's intensity, global Warming, radioactive waste/pollution. Extinction of species could happen to anyone of the food webs in a long term change.

Explanation:

Answer:

27.5°C = Final Temperature of the metal

Explanation:

The change in temperature using the specific heat of a material could be obtained using the formula:

Q = m*S*ΔT

Where Q is heat absorbed in Joules = 128J in the problem

m is the mass of the substance = 10.5g

S is Specific Heat of the substance = 0.449J/g°C for Iron

ΔT is change in temperature = Final T - Initial T

Replacing:

128J = 10.5g*0.449J/g°C*ΔT

2.5°C = ΔT

2.5°C = Final T - 25°C

Answer:

Tetrahedral

Explanation: