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3 years ago

Which substance is a mixture? table salt gasoline aluminum carbon dioxide

Chemistry

2 answers:

otez555 [7]3 years ago

8 0

Answer: gasoline

Explanation: Gasoline is a mixture of many different hydrocarbons: alkanes (paraffins), cycloalkanes and alkenes (olefins). Salt and carbon dioxide are chemical compounds, aluminium (Al) is an chemical element.

gayaneshka [121]3 years ago

5 0

Answer:

The Answer is Gasoline

Explanation:

I just took the test

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A sample of carbon dioxide gas that has a volume of 14.6 L at STP contains how many

Nana76 [90]

Answer:

n = 0.651 mol

Explanation:

Given data:

Volume of CO₂ = 14.6 L

Temperature = standard = 273.15 K

Pressure = standard = 1 atm

Number of moles of CO₂ = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K

T = temperature in kelvin

by putting values,

1 atm × 14.6 L = n × 0.0821 atm.L/ mol.K × 273.15 K

14.6 L. atm = n × 22.43atm.L/ mol

n = 0.651 mol

7 0

3 years ago

Explain how elements are arranged on the periodic table. What does the table tell you when you read it like sentences in a book

DochEvi [55]

Explanation:

In periodic table:

Elements are arranged according to their atomic number in increasing order.
When we move left to right we move along a period.The period in the periodic table tell us about the principal quantum number,(n).
When move from top to bottom we are moving in group. The group in the periodic table tell us about the number of the valence electrons present in the valence shell of the elements of the particular group.

3 0

4 years ago

Read 2 more answers

Can some help me plz.

tankabanditka [31]

Answer:

Pythagoras was the first ancient astronomer to suggest that there was a harmony of the spheres, and that the movement of the planets, sun, moon and stars could be described by whole numbers and mathematical precision. His other discovery was that the morning and evening star are the same thing, the planet Venus.

Explanation:

if im right plz give me brainliest !! :)

6 0

3 years ago

Drag each image to the correct location on the model. Each image can be used more than once. Apply the rules and principles of e

Aleksandr [31]

Answer:

The answer to your question is given below.

Explanation:

Aluminium has atomic number of 13. Thus, the electronic configuration of aluminium can be written as:

Al (13) —› 1s² 2s²2p⁶ 3s²3p¹

The orbital diagram is shown on the attached photo.

6 0

4 years ago

How many grams of sodium sulfate Na2SO4 (mw = 142.04 g/mol) is needed to prepare 350.0 ml of a solution having a concentration o

ch4aika [34]

According to the definition of molarity, 350 mL of a solution with a sodium ion concentration of 0.125 M requires 6.2125 g of Na2SO4 to manufacture.

<h3><u>How to find Molarity ?</u></h3>

The number of moles of a solute that are dissolved in a given volume is what is meant by the definition of molarity, which is a measurement of a solute's concentration.

By dividing the moles of the solute by the volume of the solution, molarity, also known as the molar concentration of a solution, is obtained.

Molarity = No. of moles of solute / Volume

Molarity is expressed in units mole/litre

In this case, you know that:

molarity= 0.125 M
number of moles of solute= ?
volume= 350 mL= 0.350 mL

Replacing in the definition of molarity:

0.125M = No. of moles of solute / 0.350l

Solving:

number of moles of solute= 0.125 M× 0.350 L

number of moles of solute= 0.04375 moles

Being 142 g/mole the molar mass of Na₂SO₄, that is, the mass of one mole of the compound, the amount of mass that contains 0.04375 moles is calculated as:

mass= 0.04375 moles× 142 g/moles

mass= 6.2125 g

In summary, 6.2125 g of Na₂SO₄ is needed to prepare 350 mL of a solution having a sodium ion concentration of 0.125 M.

To view more about concentrations, refer to;

brainly.com/question/10725862

#SPJ4

6 0

2 years ago