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Greeley [361]
3 years ago
7

You probably already know the names of some molecules. Identify which compound (water, salt, carbon dioxide, or methane) corresp

onds to each of the following chemical formulas. H2O is . CO2 is . NaCl is . CH4 is .
Chemistry
2 answers:
vladimir1956 [14]3 years ago
7 0

CO2 is carbon

H2O is water

CH4 is methane

NaCI is salt

Natali5045456 [20]3 years ago
6 0

Explanation:

Water has a formula which represents two hydrogen atoms are attached to one oxygen atom. Therefore, the formula of water is H_{2}O.

Salt is also known as sodium chloride. Its formula represents that one sodium atom is attached to one chlorine atom, therefore, its formula is NaCl.

Carbon dioxide has a formula which represents one carbon atom is attached to two oxygen atoms. Therefore, its formula is CO_{2}.

Methane has a formula which represents one carbon atom is attached to four hydrogen atoms. Therefore, its formula is CH_{4}.

Thus, we can conclude that H_{2}O is water, CO_{2} is carbon dioxide, NaCl is salt, and CH_{4} is methane.


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Rewrite each equation below with the delta H value included with either the reactants or the products and identify the reaction
yanalaym [24]
A) 2H₂(g) + O₂(g) → 2H₂O(l) + 285.83 kJ
Exothermic

B) 2Mg + O₂ → 2MgO + 1200kJ
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5 0
3 years ago
Calculate the moles of SO₂ produced when 5 moles of FeS₂ reacts according to the equation: 4FeS₂+ 11O₂ → 2Fe₂O₃ + 8SO₂
Gala2k [10]

Answer:

10 moles of SO₂ are produced when 5 moles of FeS₂

Explanation:

Stoichiometry: it is the theoretical proportion in which the chemical species are combined in a chemical reaction. The stoichiometric equation of a chemical reaction relates molecules or number of moles of all the reagents and products that participate in the  reaction.

In other words, stoichiometry establishes relationships between the molecules or elements that make up the reactants of a chemical equation with the products of said reaction. The relationships established are molar relationships (that is, moles) between the compounds or elements that make up the chemical equation.

The stoichiometric coefficients of a chemical reaction indicate the proportion in which said substances react.

Taking into account the above, you can apply the following rule of three: by stoichiometry if 4 moles of FeS₂ produce 8 moles of SO₂, then when reacting 5 moles of FeS₂ how many moles of SO₂ will they produce?

moles of SO_{2} =\frac{5 moles of FeS_{2} *8moles of SO_{2}}{4 moles of FeS_{2}}

moles of SO₂= 10

<u><em>10 moles of SO₂ are produced when 5 moles of FeS₂</em></u>

7 0
3 years ago
How many Atoms of Oxygen are in water H20? explain how u know
blagie [28]
There are ALOT because they would always come in and out and they will burst which creates more so techneclly there are infinate 
3 0
3 years ago
Read 2 more answers
How many U.S. gallons are there in a cubic mile? The total proven oil reserves of the U.S. are roughly 30 x 10°bbl. How many cub
Ira Lisetskai [31]

Answer:

1 cubic mile = 1.101 * 10^12 US gallons

1 US bbl oil = 42 US gallons = 3.8143*10^ -11 cubic miles

Explanation:

The number of the exponent of the oil reserve is not very well shown in the question so, I provide you the conversion of bbl oil into cubic mile, the only thing you have to do is multiply the number of bbls of the reserve for the conversion in cubic miles and you'll have the answer.

4 0
3 years ago
molecules with a plane of symmetry between the chiral centers are achiral and meso. identify which of the following molecules ar
maks197457 [2]

Molecules with a plane of symmetry between the chiral centers are achiral and meso. From the given molecules (Picture attached) only (A) compound 1 is meso.

When compounds possess a plane of symmetry between the chiral centers they are called achiral or meso compounds. Among the given compounds (A) compound 1 have a plane of symmetry. So we can say compound one is a meso or achiral compound. Compounds two, three, and four have no plane of symmetry, as you can see in the structures attached. So all other compounds (compound 2, compound 3, and compound 4) except compound one are not meso or achiral.

You can also learn about meso compounds from the following question:

brainly.com/question/29022658

#SPJ4

7 0
1 year ago
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