2 years ago

What are some observable indications that a chemical reaction has occurred?

Chemistry

1 answer:

Leya [2.2K]2 years ago

8 0

Bubbles, release of gas, change in color, release of a smell, change in temperature, formation of a precipitate,

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Why is NaHCO3 a base?

worty [1.4K]

NaHCO3 is a product of a strong base and a weak acid reaction. Thus it has weak basic properties.

HCO3- ion is actually amphoteric, which means it can act as a base or an acid. But it is weaker than a strong acid or a strong base.

HCO3- is amphoteric meaning it acts both as a B.L. Acid and a B.L. Base.. which is why it's used to neutralize both acid and base spills in the lab.

7 0

2 years ago

porque a água da chuva, mesmo em ambientes não poluídos, pode ser considerada levemente ácida?indique a fórmula do composto quím

Basile [38]

Answer:

Olá, a resposta que você está procurando é, na verdade, plasma mais refração. Eu estou usando um tradutor para ajudá-lo agora, então eu espero que você não se importe.

Explanation:

5 0

3 years ago

If a sample of N2 gas has an initial pressure of 500 Torr and volume of 0.5 L, what will the final volume be if the pressure is

kherson [118]

Answer:

V₂ = 0.4 L

Explanation:

Data:

P₁ (initial pressure) = 500 torr
V₁ (initial volume) = 0.5 L
P₂ (final pressure) = 700 torr

Wanted:

V₂ (final volume)

Equation:

P₁V₁ = P₂V₂ → V₂ = P₁V₁ / P₂

Solution:

V₂ = $\frac{(500 torr)(0.5 L)}{700 torr}$ = 0.3571 L or 0.4 L

8 0

2 years ago

Energy leaves the sun as light from region called the?

tino4ka555 [31]

Late answer:
Chromosphere.

4 0

3 years ago

1. Find the molar mass of the compounds a. K2Cro4

Luda [366]

Answer:

194.1903

Explanation:

that is for one mole of K2Cro4

8 0

3 years ago