If you pump 40.088g of octane (C8H18) into your gas tank, how mant molecules of octane are you pumpingplease help ASAP will give the brainliest
Answers
Answer:
2.11 × 10²³ molecules of octane
Explanation:
Given data:
Mass of octane = 40.088 g
Molecules of octane = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen
Number of moles of octane:
Number of moles = mass/ molar mass
Number of moles = 40.088 g / 114.23 g/mol
Number of moles = 0.351 mol
Number of molecules:
one mole of octane = 6.022 × 10²³ molecules of octane
0.351 mole of octane = 0.351 × 6.022 × 10²³ molecules of octane
2.11 × 10²³ molecules of octane
Related Questions
i want to see the amount of time i am given will affect the number of jumping jack i can complete.i need the CER=Explanation
PLEASE for the love of god answer these questions for me!!!! It’s urgent. 1. Some igneous rock forms from magma that cools slowly within Earth’s crust. Briefly describe the most likely crystallization and texture of the rock.2. Other igneous rock forms from lava that cools quickly on Earth’s surface. Classify the rock as either intrusive or extrusive, and identify another word used to describe this type of rock.3. You are studying a sample of igneous rock. The rock formed on the surface of Earth. It’s made mostly of light-colored minerals. The sample has just a few specks of dark-colored minerals. Classify the rock by type and composition.4. You are studying a sample of igneous rock. The rock formed within Earth’s crust. The sample contains a very high concentration of dark-colored, high-density minerals. Classify the rock by type and composition.5. A scientist shows you a sample of rock called gabbro. The scientist explains that gabbro is an intrusive mafic igneous rock. Explain what this means.
Asexual organisms, as compared to sexual organisms, tend to be smaller, have shorter life spans, and produce little or no genetic variability between generations. This makes it harder for an individual asexual organism to survive and reproduce. What is one advantage that asexual organisms have that helps them to overcome these disadvantages?They never need to sleep.A They are able to find food easier.B They have higher reproductive rates.C They use energy more efficiently.
Which statement about reversible reactions is correct? At equilibrium, the forward and reverse reactions stop at the appropriate concentrations. At equilibrium, the forward and reverse reactions continue indefinitely. At equilibrium the rate of reaction of products divided by the rate of reaction of reactants equal the equilibrium constant, K.
Answers
Answer:
A molecular formula will show the actual number of atoms in a molecule, while the structural formula will show the organization and layout of the atoms in the compound.
Explanation:
i took a test and this was the answer
Answers
Answers
Answer:
Heat required to melt 26.0 g of ice at its melting point is 8.66 kJ.
Explanation:
Number of moles of water in 26 g of water: 26× moles
=1.44 moles
The enthalpy change for melting ice is called the entlaphy of fusion. Its value is 6.02 kj/mol.
we have relation as:
q = n × ΔH
where:
q = heat
n = moles
ΔH = enthalpy
So calculating we get,
q= 1.44*6.02 kJ
q= 8.66 kJ
We require 8.66 kJ of energy to melt 26g of ice.
Answers
~Hope this helped! :)
how can the environment be organized into levels from complex to simple
Answers
Answers
Final answer:
The differing environmental conditions at different altitudes on a mountain lead plants to develop specific adaptations to those conditions. These adaptations can cause variations in characteristics of plant species across altitudes. Such variations may also signal potential speciation events.
Explanation:
Plants found at different elevations on a mountain differ due to adaptions to varying environmental conditions. The primary differences in environmental conditions can be attributed to three main factors - differences in temperature, light and atmospheric pressure across varying altitudes. As one climbs up a mountain, the temperature typically decreases, light intensity may vary, rainfall patterns may change, and atmospheric pressure decreases.
Plants adapt to these variable conditions in several ways. For instance, high altitude plants might develop adaptations to survive colder temperatures, stronger winds, and more intense UV radiation. They might have smaller leaves to reduce water loss, thicker cuticles to handle UV radiation, and can grow closer to ground to escape wind damage. On the other hand, plants at lower altitudes may have broader leaves to capture more sunlight, deeper roots systems to access water resources, and they can afford to invest more resources in growth, as opposed to survival mechanisms.
Observed differences in plant species across altitudes can also suggest potential speciation events, where the separation of populations by altitude leads to the development of new species over time. A possible way to ascertain this would be to observe whether, when grown in the same environment, high-altitude plants respond to low altitude in the same way that low-altitude plants do, and vice versa. This could indicate whether the observable differences are primarily due to environmental factors or genetic variation.
Learn more about Plant Adaptation here:
#SPJ12