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Sphinxa [80]
3 years ago
13

How many moles are in 12.0 grams of O2

Chemistry
1 answer:
horrorfan [7]3 years ago
5 0

Answer:

Moles = 0.375

Explanation:

Moles= m/M

= 12/32 = 0.375mol

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Aspirin that has been stored for a long time may give a vinegar like odour and give a purple colour with FeCl3. What reaction wo
iVinArrow [24]

Answer:

See explanation

Explanation:

The IUPAC name of aspirin is 2-Acetoxybenzoic acid. It is composed of an acetoxy moiety and a benzoic acid moiety.

The compound can be hydrolysed under prolonged storage conditions to yield acetic acid which causes the vinegar like odour.

Also, one of the products of this hydrolysis bears a phenol group which reacts with FeCl3 to give a purple color.

3 0
3 years ago
How many neutrons does an atom of Uranium 240?
qwelly [4]

Answer:

Number of neutrons is equal to 148.

4 0
2 years ago
The notation for a particular nucleus is r3785b. in an electrically neutral atom. How many electrons are in orbit about this nuc
Serhud [2]

^{85}_{37}Rb has 37 electrons in the orbit about its nucleus.

<h3>How to write an atomic symbol with atomic mass and atomic number?</h3>

Atomic mass is the total number of neutrons and protons present in the nucleus of an element.

The atomic number is the total number of protons present in the nucleus of an element.

For writing an atomic symbol, atomic mass is written on the top left of the atomic symbol, and the atomic number is written on the downside of the left of the symbol.

^{Atomic mass}_{Atomic number}X

An electrically neutral atom is an atom that has an equal number of electrons as well as protons.

Thus from the above conclusion we can say that  ^{85}_{37}Rb has 37 electrons.

Learn more about Atomic mass and atomic number here:

brainly.com/question/3187640

#SPJ4

3 0
2 years ago
how many grams of oxygen gas are needed to produce 10.0 grams of carbon dioxide according to the balanced equation of CH4
Alinara [238K]
Molar mass of :

O2 = 16 * 2 = 32 g/mol

CO2 = 12 + 16 * 2 = 44 g/mol

<span>Balanced chemical equation :
</span>
1 CH4 + 2 O2 = 1 CO2 + 2 H2O
               ↓              ↓
             2 moles     1 mole

2* 32 g O2 ----------> 1* 44 g CO2
     x g O2 ------------> 10.0 g CO2

44 x = 2 * 32*10.0

44 x = 640

x =  \frac{640}{44}

x = 14.54 g of O2





7 0
3 years ago
A single compound breaks apart to form two or more elements or compounds
il63 [147K]

Answer:

I think so elements

Explanation:

4 0
4 years ago
Read 2 more answers
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