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3 years ago

En 1500 kg de aire hay 0.8 g de dióxido de carbono a cuantos ppm corresponde la muestra de co2

Chemistry

1 answer:

Alex Ar [27]3 years ago

4 0

Translation:

In 1500 kg of air there are 0.8 carbon dioxide. How many ppm does the carbon dioxide sample correspond to?

Explanation:

Given parameters:

Mass of air = 1500kg

Mass of carbon dioxide= 0.8g

Unknown:

PPM of carbon dioxide in the sample = ?

SOLUTION :

The parts per million ppm is used to express dilute concentration of solutes. It simple means out of a million.

To express the answer in ppm, first convert into uniform units:

1500kg to g = ?

1kg = 1000g

1500kg = (1500 x 1000)g = 1500000g

To express as part per million:

$\frac{mass of carbon dioxide}{mass of air}$ x 1000000

$\frac{0.8}{1500000}$ x 1000000 = 0.533ppm

Learn more:

Parts per million brainly.com/question/2854033

#learnwithBrainly

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The volume of a given quantity of a gas must increase if:

professor190 [17]

<span>D the temperature decreases and the pressure increases</span>

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4 years ago

HURRY!!!! TIMED!!! WILL GIVE BRAINLIST!!!

aev [14]

Explanation:

(a) write a balanced equation for the reaction

CaCO3 + HCl --> CaCl2 + H2O + CO2

The balanced equation is given as;

CaCO3 + 2HCl → CaCl2 + H2O + CO2

(b) when the reaction was complete, 800 mL of carbon dioxide gas was collected. How many moles of calcium carbonate were used in the creation?

From the balanced reaction;

1 mol of CaCO3 reacts to produce 1 mol of CO2

1 mol of CO2 = 22.4 L of CO2

This means;

1 mol of CaCO3 reacts to produce 22.4L of CO2

x mol would produce 800ml (0.8 L) of CO2

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x = 0.8

x = 0.8 * 1 / 22.4 = 0.0357 mol

Mass = Number of moles * Molar mass

Molar mass of CaCO3 = 100.0869 g/mol

Mass = 0.0357 mol * 100.0869 g/mol = 3.57 g

(d) If there was another contaminant in the sample that was not un reactive, would this have caused the percent yield of carbon dioxide to be higher, lower, or the same, explain your answer.

The same

An un reactive contaminant in the sample is most likely a catalyst. Catalysts only affect the rate of reaction. They do not affect yields of products.

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3 years ago

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4 years ago

NOBLE GASSES) Why’ are they Inert tho

igomit [66]

Answer:

Why? Because of electron shells. Technically, they're not fully inert. They have very low reactivity potential, and can only be forced to become reactive with difficulty.

Explanation:

All chemical reactivity is made possible through the atom's electron arrangement. Electrons basically have shelves where they live, called "levels" or "shells". Each level is farther from the nucleus than the previous one. Atoms are most stable when their outer most shell (called the valence shell) is full. Atoms with an incomplete shell will react with other atoms, in an attempt to either fill out the outer shell, or to rid itself of it's valence electrons so that that previous level becomes a full valence level. If the valence shell ils already full, the atom will not be inclined to create compounds.

The first shell can hold up to two electrons. After the first two electrons, any additional electrons have to begin a new shell. The second shell can hold eight electrons before it becomes full. Helium is the first noble gas on the periodic table, having two protons and two electrons. Because helium's outer most shell is full, it does not react with other atoms.

By comparison, look at hydrogen and oxygen. Oxygen has eight electrons. The first two electrons occupy the first shell. The remaining six go to the second shell. This leaves the second shell with two empty spaces that can potentially be filled. Meanwhile, hydrogen has one electron, with it's valence shell having an empty space for one additional electron. Two hydrogen atoms give up their single electrons to an oxygen atom, so that all three end up with stable valence levels.

By the time an atom can fill out the second electron shell on it's own (10 total electrons) you end up with neon, the second noble gas.

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3 years ago

Read 2 more answers

What is the volume at STP of 2.66 moles of methane gas

sineoko [7]

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4 years ago