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2 years ago

A representative particle of carbon dioxide is

Chemistry

2 answers:

KonstantinChe [14]2 years ago

6 0

Carbon atom with iron and helium

klio [65]2 years ago

3 0

Answser: the representative unit of carbon dioxide is the molecule CO₂.

Justification:

1) carbon dioxide is made of one atom of carbon and two atoms of oxygen chemically bonded by covalent bonds.

2) A molecule is formed when two or more atoms are bonded by covalent bonds.

3) Some other examples of molecules are: water (H₂O), oxygen (O₂), the fats, the carbohydrates, glucose.

4) The term molecule is reserved for atoms bonded by covalent bonds, so ionic compounds like NaCl, are not named molecules. NaCl is told to represent a formula unit instead of a molecule.

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List 2 things that about Velocity and Speed that are Different and two that are the same.

frozen [14]

Hey there!
Speed and velocity both:
1) Measure how fast something is moving
2) Both measured in miles per hour, meters/second, etc (rates)
However, there's a prime difference:
Different because:
1) Velocity is speed, but in a certain direction
2) Velocity is a vector
3) Velocity can be positive <em>or</em> negative, unlike speed.
I added another just in case you had a preference :)

Hope this helps!

8 0

3 years ago

How many grams of Fe2+ are there in 0.003109 moles of Fe2+?

Sergio [31]

Answer: 0.174 g

Explanation:

First of all understand that charge on an atom like here 2+ will not vary molar mass. because ions are formed by loss or gain of electrons and electrons do not contribute to the mass of an atom or ion. so losing or gaining electron doesnt create any difference.

molar mass of Fe, i.e. mass of 1 mole of Fe is 56 g. So, mass of 1 mole of Fe2+ will also be 56 g.

given is 0.003109 moles of Fe2+,

Use maths,

1 mole of Fe2+ weighs 56 g

So, 0.003109 moles will weigh = (56 g / 1 mol ) x 0.003109 = 0.174 g.

7 0

2 years ago

The complete combustion of octane, C8H18, the main component of gasoline, proceeds as follows: 2C8H18 (l) 25 O2(g) --> 16 CO2

Svet_ta [14]

The ratio of mole number of the reactants and products is equal to the coefficients. So the answer is a. 18.75 mol. b. 35.1 g. c. 1.38 * 10^5 g.

7 0

2 years ago

Read 2 more answers

How many atoms of hydrogen are in 170 g of hydrogen peroxide (h2o2)?

Ede4ka [16]

I am pretty sure the answer is 1.5*10^25

5 0

2 years ago

A solution has a pOH of 8.20. What is the concentration of H3O+?

Sedbober [7]

Answer:

.000001585

Explanation:

14-8.20=5.8

10^-5.8 = H3O+

- Hope this helped! Please let me know if you need further explanation.

7 0

2 years ago