Why is it good to use blue and red litmus for the same solution?

1 answer:

6 0

Under acidic conditions, the solution is red, and under alkaline conditions, the solution is blue. Chemical reactions other than acid-base can also cause a color change to litmus paper. For instance, chlorine gas turns blue litmus paper white – the litmus dye is bleached, because of presence of hypochlorite ions.

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N2 (g) + 2O2(g) = 2NO2 (g) ΔH = 66.4 kJ 2NO (g) + O2 (g) = 2NO2 (g) ΔH = -114.2 kJ the enthalpy of the reaction of the nitrogen

RSB [31]

Answer:

ΔH = 180.6 kJ

Explanation:

Given that:

N2 (g) + 2O2(g) = 2NO2 (g) ΔH = 66.4 kJ

N2 (g) + O2 (g) = 2NO (g) ΔH = ????

The subtraction of both equations would yield the unknown ΔH , therefore:

ΔH = 66.4 - ( - 114.2 kJ)

ΔH = 180.6 kJ

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slega [8]

Answer:

The correct answer would be metamorphosis.

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It is mainly observed in amphibians and insects. For example, frog and butterfly.

The life cycle of a butterfly can be summarized as shown below.

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6.626 × 10⁻³⁴ × 7.08× 10¹⁴

PolarNik [594]

The answer is 4.69 x 10⁻¹⁹ I hope this helped!

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According to the data, the temperature of the

Vadim26 [7]

Answer: 351

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Force acting on the body when the body is at rest the net formals is given

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