Which of the following is a compound? Ne N2 NaCl O2

Chemistry

2 answers:

Lapatulllka [165]3 years ago

7 0

Ne because it it just a regular element (neon)

Katyanochek1 [597]3 years ago

7 0

Answer:

NaCl, $N_2, O_2$

Explanation:

In chemistry, a chemical compound is a substance composed of the combination of two or more elements of the periodic table.

Ne: is an element of the periodic table.

$N_2$ : is a molecule

NaCl: is a molecule

$O_2$ : is a molecule

You might be interested in

What are the different between alpha , beta , gamma rays

vovikov84 [41]

Answer:

Alpha is when you are the leader of the pack. Beta is the weaker but can become alpha by killing th ealpha.

Explanation:

4 0

4 years ago

the men's world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56 s. At this rate, how many second

Lyrx [107]

140 s. It would take 140 s to swim 0.150 mi .

Step 1. Convert the time to seconds

Time = 14 min × (60 s/1 min) + 34.56 s = 840 s + 34.56 s = 874.56 s

Step 2. Convert miles to metres

Distance = 0.150 mi × (1609.3 m/1 mi) = 241.4 m

Step 3. Calculate the time to swim 241.4 m

Time = 241.4 m × (874.56 s/1500 m) = 140 s

(As of 2012, the men’s freestyle record for 1500 m was 14:31.02.)

5 0

3 years ago

11C. Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to standardize strong base solut

Llana [10]

For the reactants,

The oxidation number of hydrogen = +1
The oxidation number of oxygen = -2
The oxidation number of arsenic = +5
The oxidation number of carbon = +3

For the products,

The oxidation number of hydrogen = +1
The oxidation number of oxygen = -2
The oxidation number of arsenic = +3
The oxidation number of carbon = +4

Here, arsenic (+5 to +3) and carbon (+3 to +4) are the only oxidation numbers changing.

Note that an increase in oxidation number means electrons are lost. Thus oxidation is occurring, and a decrease in oxidation number means electrons are being gained, and thus reduction is occurring.

Also, the compound that contains the element being oxidized is the reducing agent, and the compound that contains the element being reduced is the oxidizing agent.

So, the answers are:

name of the element oxidized: Carbon

name of the element reduced: Arsenic

formula of the oxidizing agent: $\text{H}_{3}\text{AsO}_{4}$