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RideAnS [48]
3 years ago
7

Which of the following are steps for balancing chemical equations?

Chemistry
2 answers:
levacccp [35]3 years ago
5 0

Answer:

B. Write the chemical equation using formulas and symbols.

D. Count the atoms in each substance in the reactants and products,

Explanation:

When balancing chemical equation, it implies that the law of conservation of matter be strictly adhered to.

By so doing, the number of atoms on both sides of the reaction must be the same. Number of atoms in the products and reactants must have the same value.

  • It is always a good approach to first write the chemical equation of the reaction.
  • This will give an overview of the reacting species and the products being formed.
  • Then, go on to count the number atoms in the reactants and product sides of the expression.
  • Then balance it using any of the method of balancing chemical equations.
anyanavicka [17]3 years ago
5 0

Answer: b and d

Explanation:

Hope it helps

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Al agregar 150g de una sustancia X en un recipiente que sostiene que contiene agua hasta 50, el nivel del agua aumenta hasta 120
vovangra [49]

Answer:

2,14 g / ml

Explanation:

Sabemos que el volumen de una sustancia es igual al cambio de volumen del agua cuando el objeto en cuestión se sumerge en el agua.

Dado que el volumen original del agua = 50 ml

Volumen de agua después de sumergir el objeto = 120 ml

Masa del objeto = 150 g

Ahora,

Densidad = masa / volumen

Densidad = 150g / 120-50 ml

Densidad = 150/70 ml

Densidad = 2,14 g / ml

4 0
2 years ago
Is dew forming on a leaf a physical or chemical change?
solong [7]
No, the formation of dew is condensation, which is a physical change.
5 0
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Which of the following describes metallic character on the periodic table? Question 1 options: A) It increases as you move right
Ilia_Sergeevich [38]

Answer:

D

Explanation:

Metallic character decreases as you move across a period in the periodic table from left to right. This occurs as atoms more readily accept electrons to fill a valence shell than lose them to remove the unfilled shell. Metallic character increases as you move down an element group in the periodic table. This is because electrons become easier to lose as the atomic radius increases, where there is less attraction between the nucleus and the valence electrons because of the increased distance between them.

3 0
2 years ago
Which would most likely cause a person to produce antibodies?
rosijanka [135]

Answer:

receiving a vaccination

Explanation:

7 0
3 years ago
Read 2 more answers
The backbone of nucleic acids consists of
V125BC [204]

Answer:

c. a phosphodiester bond between the 3' and 5' hydroxyl groups of neighboring sugars

Explanation:

Phosphodiester bond is the bond which is formed between the hydroxyl group of one nucleotide to the phosphate group of the another nucleotide. These are ester bonds. These bonds are central to all the life which is in existence on Earth. These bonds forms the backbone of the strands of the nucleic acid.

The bond is formed by the linkage of 3' carbon atom of one of the sugar unit to the 5' carbon atom of the another succeeding sugar unit.

<u>Hence, the answer is:- c. a phosphodiester bond between the 3' and 5' hydroxyl groups of neighboring sugars</u>

4 0
3 years ago
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