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xz_007 [3.2K]
3 years ago
8

Why sulphur used for food preservation?​

Chemistry
1 answer:
Greeley [361]3 years ago
3 0

Answer:

It maintains the appearance of fruits and prevents rotting. It is used in soft drinks to preserve its color

Explanation:

Sulfur Dioxide is widely used as a food preservative because of the following reasons : It acts as an antioxidant.

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Solid iron (III) oxide reacts with hydrogen gas to form iron and water. How many grams of iron are produced when 440.23 grams of
Nookie1986 [14]

When 440.23 grams of iron(III) oxide are reacted with hydrogen gas, the amount of iron produced will be 307.66 grams

<h3>Stoichiometric calculation</h3>

From the equation of the reaction:

Fe_2O_3 + 3H_2 --- > 2Fe + 3H_2O

The mole ratio of iron(III) oxide to produced iron is 1:2.

Mole of 440.23 iron(III) oxide = 440.23/159.69 = 2.76 moles

Equivalent mole of produced iron = 2.76 x 2 = 5.52 moles

Mass of 5.52 moles of iron = 5.52 x 55.8 = 307.66 grams

More on stoichiometric calculations can be found here; brainly.com/question/27287858

#SPJ1

4 0
2 years ago
if a sample of ideal gas takes up 5.00 L at 300 K and 1.5 atm, what volume will it Take up at 400 K and 1.5 atm?
zysi [14]

Answer:

The volume will be 6, 67 L

Explanation:

We use the gas formula, which results from the combination of the Boyle, Charles and Gay-Lussac laws. According to which at a constant mass, temperature, pressure and volume vary, keeping constant PV / T:

P1xV1/T1 = P2 x V2/T2

V2= ((P1xV1/T1)xT2)/P2

V2=((1,5 atm x5 L/300K)x400K)/1,5 atm

V2=6, 67 L

6 0
4 years ago
I have a rock with the mass of 4.8 and a volume of 2.3.
WARRIOR [948]
Depending on what you need to round it to, it’s
1.9565
Or
1.957
Or
1.96

Density is mass/volume so it’s simply 4.8/2.3
Which equals
1.95652174

Hope this helped, good luck!
3 0
4 years ago
Read 2 more answers
Electron sharing can be depicted by a Lewis dot structure, in which element symbols are surrounded by dots that represent the va
Nina [5.8K]

Answer:

Outermost

Covalent

Two

One

Two

Two

Covalent

One

Explanation:

A covalent bond is formed when an atom shares two electrons with another atom. These shared electrons could be contributed by each of the bonding atoms or by only one of the bonding atoms.

Hydrogen has the electronic configuration of 1s1. This implies that it has only one electron in its valence shell although the 1s shell can accommodate two electrons. When the atomic orbitals of carbon and hydrogen overlap, they share two electrons and hydrogen is now associated with two electrons in a covalent bond.

Since hydrogen possesses only one valence electron, it can not be bonded to two atoms.

4 0
3 years ago
Is the ability to be digested a physical or chemical property?
dmitriy555 [2]
I do believe the answer would be physical 
4 0
3 years ago
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