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4 years ago

1. How would you explain that energy in animals' food was once energy

Chemistry

2 answers:

AleksAgata [21]4 years ago

8 0

Answer:

Explanation: That energy inanimals food, used for body repair,growth, motion .It maintain body warmth, once energy from the sun.

Tju [1.3M]4 years ago

4 0

Answer:

The energy released from food was once energy from the sun that was captured by plants in the chemical process that forms plant matter (from air and water). Food provides animals with the materials they need for body repair and growth and the energy they need to maintain body warmth and for motion.

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onsider the reaction, NO2(g) + CO(g) → NO(g) + CO2(g), for which the rate law has been determined to be: Rate = k[NO2]2[CO]. Whi

nlexa [21]

Answer:

The correct answer is option D.

Explanation:

Rate of the reaction is a change in the concentration of any one of the reactant or product per unit time.

$NO_2(g) + CO(g)\rightarrow NO(g) + CO_2(g)$

Rate of the reaction:

$R=-\frac{1}{1}\times \frac{d[NO_2]}{dt}=-\frac{1}{1}\times \frac{d[CO]}{dt}$

Rate of decrease in nitrogen dioxide concentration is equal to the rate of decrease in carbon monoxide.

Given rate expression of the reaction:

$R = k[NO2]^2[CO]$

Rate of the reaction on doubling concentration of nitrogen dioxide and carbon monoxide : R'

$R'=k(2\times [NO_2])^2(2\times [CO])=8\times k[NO2]^2[CO]=8R$

Doubling the concentrations of nitrogen dioxide and carbon monoxide simultaneously will increase the rate of the reaction by a factor of eight.

Hence, none of the given statements are true.

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3 years ago

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When two liquids are combined and form a solid (but didn't freeze) the solid that was formed is called

ludmilkaskok [199]

The answer is nucleation because can turn liquids into solids.

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3 years ago

GIVING OUT BRAINLIEST

d1i1m1o1n [39]

Answer:

it increases and is perpendicular to the motion of the wave.

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3 years ago

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A rigid tank contains 2.4 kg of helium at determine the volume

ddd [48]

The volume is 1.3 for

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3 years ago

Given a solution with a Ph of 2.8, what is the [H3O+] of the solution?

Crank

$pH=-\log_{10} [H_3O^+] \Rightarrow [H_3O^+]=10^{-pH} \\ \\
pH=2.8 \\
\ [H_3O^+]=10^{-2.8} \approx 1.58 \times 10^{-3}$

The [H₃O⁺] of the solution is approximately 1.58 × 10⁻³ M.

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3 years ago