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3 years ago

Is gasoline a heterogeneous mixture or a homogeneous mixture?

1 answer:

3 0

Gasoline is a mixture of compounds called hydrocarbons (compounds of hydrogen and carbon). It is obtained by purifying crude oil by fractional distillation. Gasoline is most commonly referred to as a mixture of compounds, therefore it is a mixture. Gasoline is composed of hydrocarbons combined with different concentrations of ethanol. Pure substances can be either elements or compounds. Mixtures can be eitherhomogeneous or heterogeneous. Another term for a homogeneous mixture is a solution. ... Gasoline is thus a blend of different compounds, so it is a mixture.

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Definition: A compound composed of two elements that share valence electrons

Evgen [1.6K]

Answer:

Explanation:

Binary compound

3 0

3 years ago

What is the empirical formula of a compound that is composed of 60.94% carbon 15.36% hydrogen and 23.70% nitrogen

Musya8 [376]

Answer:

C₃H₉N

Explanation:

The empirical formula of a compound is the fundamental and basic possible formula that shows the mole ratio of the atoms of each element in a molecule of the compound.

mole ratio of carbon = 60.94/12 = 5.078

mole ratio of hydrogen = 15.36/1 = 15.36

mole ratio of nitrogen = 23.70/14 = 1.693

Now; we will divide by the smallest value

So; carbon = 5.078/1.693 = 2.99 ≅ 3.0

hydrogen = 15.36/1.693 = 9.07 ≅ 9.0

nitrogen = 1.693/1.693 = 1 ≅ 1

Thus, the empirical formula is = C₃H₉N

6 0

3 years ago

What is the acceleration of the object’s motion? 0.5 m/s2 -0.5 m/s2 2 m/s2 -2 m/s2

djverab [1.8K]

Answer: -2m/s2

Explanation:

Using the following equation ; acceleration = Change in velocity / time

i.e a = v - u / t

where 'a' = acceleration

v = final velocity

u = initial velocity

t = time

Therefore; from the graph we have acceleration to be, 0 - 6m/s / 3s = -2m/s2

5 0

4 years ago

A student uses the periodic table to construct a model that uses a simple diagonal arrow to depict decreasing electronegativity.

Galina-37 [17]

Answer:

helium

Explanation:

helium has the highest ionization energy level

5 0

3 years ago

What sort of evidence would support at least one of the components of the

Yuki888 [10]

Answer:

(not sure) The origin of all cells observed can be traced to previous cells

Explanation:

- not all cells convert energy (?) (this I'm not sure but think so? might be wrong tho)

- not all cells have cell walls e.g. animal cells only have the cell membrane, no cell wall

- Rocks and other nonliving things are composed of cells: non living things are composed of the elements and not cells (unless they were previously alive, then they contain dead cells)

8 0

4 years ago