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Musya8 [376]
4 years ago
13

Why is oxygen written with a subscript 2 in CO2?

Chemistry
2 answers:
Alexeev081 [22]4 years ago
6 0

Answer:

Explanation:

the answer is b

Ronch [10]4 years ago
6 0

the answer is b because C+o2

c= carbon, o= oxygen

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True or False: The exact location of an electron can be measured thanks to<br> modern science.
babymother [125]

Answer:

false we still have no idea we know relative location

Explanation:

8 0
4 years ago
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in the laboratory, a group of students was assigned to determine the density of an unknown liquid. They used a buret to find a v
Daniel [21]

They should report the density as 1.11 g/L .

Density = mass/volume = 2.260g/2.04 mL

My calculator says the density <em>1.107 843 137 g/mL</em>

However, the answer can have <em>no more</em> significant figures than are in the number with the <em>fewest </em>significant figures.

The volume measurement has only three significant figures, so we must round off the density to three significant figures.

We drop all the digits after the zero.

The digit to be dropped is 7, so we <em>round up </em>the last significant figure of the answer.

1.10<u>7 843 137</u> → 1.11

4 0
4 years ago
What is the molarity of a solution composed of 4.73 g of potassium iodide (KI) dissolved in enough water to make 0.169 L of solu
Kazeer [188]

Answer:

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Explanation:

We determine the moles of solute:

Mass / Molar mass → 4.73 g / 166 g/mol = 0.0285 moles

Molarity (mol/L) is defined as moles of solute in 1L of solution

It is a sort of concentration

M = 0.0285 mol / 0.169L = 0.17 M

Instead of making the division (mol/L), we can also try this rule of three:

In 0.169 L we have 0.0285 moles of solute

in 1 L we must have ___ (1 . 0.0285) / 0.169 = 0.17 mol/L

4 0
3 years ago
Solid iron combines with oxygen gas to form solid iron(III) oxide. Which of the following equations best describes this reaction
Alexus [3.1K]

Answer:

B.  4 Fe + 3 0₂---> 2 Fe₂O3        

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(C) I+ 0₂ ---> 10₂                                  No:  I is iodine

(D) 3 Ir + 0₂ -> 6 Ir₂03                         No:  I is iodine

3 0
2 years ago
Does anyone know what the formula would be for Rhenium V Biphosphate?
Georgia [21]

Answer:Re3(PO4)2 I think I'm wrong

Explanation:

8 0
3 years ago
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