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Ad libitum [116K]
4 years ago
8

Explain why chemical equations have to be balanced.

Chemistry
2 answers:
Bumek [7]4 years ago
8 0

Answer:

k

Explanation:

They must obey the Law of Conservation of Mass that states that matter cannot be created or destroyed, it is conserved. Atoms are never lost or gained in chemical reactions, they are rearranged. The mass of the reactants must equal the mass of the products.

Mrac [35]4 years ago
3 0

Answer: Chemical equations are to be balanced to be able to follow the law of conservation of mass where it says that mass cannot be created or destroyed. Reactions should be that the mass of the reactants is equal to the mass of the products.

Explanation:  idk

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Chemist preformed Reaction of solid magnesium burning and found that the mass of the magnesium oxide what is greater than the ma
tankabanditka [31]

Answer:

The magnesium reacted with the oxygen in the air.

Explanation:

For argument’s sake, let’s say that the mass of magnesium oxide was 3 g and that of the oxide was 5 g.  

The reaction was

            magnesium + oxygen ⟶ magnesium oxide

Mass:           3 g                                          5 g

Mass of oxygen = 5 g – 3 g = 2 g

The 3 g of magnesium must have combined with 2 g of oxygen to form 5 g of magnesium oxide.

4 0
3 years ago
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Vlad [161]
Not A because

2-Pentyne, an organic compound, is an internal alkyne. It is an isomer of 1-pentyne, a terminal alkyne

Is B because

DescriptionPentenes are alkenes with chemical formula C ₅H ₁₀. Each contains one double bond within its molecular structure.
6 0
3 years ago
Which of the following statements about atoms are true?
Arada [10]

Answer:

Number 6 is correct all substances are made of molecules.

Explanation:

A molecule is a formation of atoms or a chemical and all substances are made of chemicals.

6 0
3 years ago
A chemical company makes pure silver by reacting silver nitrate with zinc. the company needs to make 800 grams of pure silver fo
Ira Lisetskai [31]

Yes, they will be able to make enough silver to fill the order. They possess more reactants than are necessary.

Zinc reduces silver nitrate to silver metal according to the following equation.

2AgNO₃ + Zn → 2Ag + Zn(NO₃)₂

From the equation

2 moles of AgNO₃ produce 2 moles of silver.

If we consider the zinc to be used number of moles=mass/RAM

RAM of zinc =65.38

No. of moles=500/65.38

=7.6476moles

To produce 800 grams of silver they require:

800/107.868 moles=7.4165 moles of silver nitrate since the ratio of silver nitrate to silver produced is 1:1

The number of moles of silver nitrate available=1500/169.872

=8.83 moles.

As the amount of reactants available is more than the required the company will make it in producing the 800 grams of silver required.

<h3>More about silver nitrate</h3>

An inorganic substance with the chemical formula AgNO3 is called silver nitrate. It is coordinated in a trigonal planar structure when it is solid. It is frequently employed as a precursor to other compounds that include silver. As a staining agent for protein visibility in PAGE gels and scanning electron microscopy, it is utilized in the production of photographic films as well as in lab settings.

To view more questions about silver nitrate, refer to:

brainly.com/question/8071605

#SPJ4

7 0
2 years ago
For every 4 hours that Alexa babysit her younger sister, her mom pays her $50
tiny-mole [99]

Answer:12.5

Explanation: Divide 50$ by the 4 hours and you will get 12.5 which is $12.50.

7 0
3 years ago
Read 2 more answers
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