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elena-14-01-66 [18.8K]
3 years ago
6

What is the total number of atoms in this formula? NaHCO3

Chemistry
1 answer:
Pavel [41]3 years ago
7 0
6 - one sodium atom, 1 hydrogen atom, 1 carbon atom, and 3 oxygen atoms.


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[40 Points]
pashok25 [27]

the one that is wrong is a. increase the molecular weight of the gas , the molecular weight never changes when a solid turns to a liquid or when a liquid turns to a gas .

8 0
3 years ago
Which statement is always true about a reversible chemical reaction?
Alecsey [184]
<h2>Answer:</h2>

Option (B):

The products can form reactants, and the reactants can form products.

<h3>Explanation:</h3><h3>Reversible reaction</h3>

A reversible reaction is a reaction where the reactants form products, which react together to give the reactants back.

aA + bB ⇄ cC + dD

A and B can react to form C and D or, in the reverse reaction, C and D can react to form A and B.

Other options are wrong because off:

(A) Concentration changes with time equilibrium concentration and higher product concentration is also possible.

(C) They may be constant.

(D) Concentration changes with time equilibrium concentration and higher reactant concentration is also possible.

7 0
3 years ago
The density of red wine is 1.01g/cm3 and the density of olive oil is 0.92g/cm3.A salad dressing that consisted of these two ingr
Sauron [17]

the red wine is the densest so, it will be on bottom olive oil will be on the top. because its less than the red wine

3 0
3 years ago
3. Describe como se comparan las fuerzas intermoleculares.
Dafna1 [17]

Answer:

Donde sea que vayas, yo iré

Sombras en la luz de la cámara

Y no quieres tomarlo con calma, así que no lo hagas

Sabes que eres mi favorito, ¿verdad?

Golpearte con algo de verdad

Eres como un sueño

Quiero creer

Golpearte con algo de verdad

Cuando estamos juntos

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Tu y yo tenemos quimica

Tengo, tengo química

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Tengo, tengo química

Tengo química

En cualquier momento o lugar, no hay vergüenza

Tu tienes mi atencion ahora

¿Alguien puede montar mi ola de la misma manera?

Sabes de lo que estoy hablando

Golpearte con algo de verdad

Eres como un sueño

Quiero creer

Golpearte con algo de verdad

Cuando estamos juntos

Ni siquiera puedo mentir

Tu y yo tenemos quimica

Tengo, tengo química

Tengo química

Siéntelo cuando estás cerca de mí

Y fuera de alcance

Y en el medio

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7 0
3 years ago
When hydrogen gas reacts with oxygen gas under certain conditions to produce liquid water, 572.0 kJ of heat energy is released.
frozen [14]

Answer : This reaction is an exothermic reaction.

Explanation :

Endothermic reaction : It is defined as the chemical reaction in which the energy is absorbed from the surrounding.

In the endothermic reaction, the energy of reactant are less than the energy of product.

Exothermic reaction : It is defined as the chemical reaction in which the energy is released into the surrounding.

In the exothermic reaction, the energy of reactant are more than the energy of product.

Enthalpy of reaction : It is the difference between the energy of product and the reactant. It is represented as \Delta H.

The balanced chemical reaction will be:

H_2(g)+O_2(g)\rightarrow H_2O(l)+572.0kJ

From the reaction we conclude that the heat energy is released during the reaction that means this reaction is an exothermic reaction.

Hence, the reaction is an exothermic reaction.

7 0
3 years ago
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