3 years ago

How is sunlight transformed to provide energy for all life?

1 answer:

4 0

The sun provides the energy for photosynthesis. Cells use sugar as a source of energy. The products of cellular respiration are CO2 and H2O. These products are used by plants to make sugar and oxygen through photosynthesis.

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Which equation represents the photosynthesis process?

luda_lava [24]

The answer is B. CO2 + H2O + Sunlight ----> Glucose + O2

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2 years ago

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Match the organ to the number showing the order of blood flow in the circulatory system.

seraphim [82]

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Explanation:

In the lungs CO2 is removed from the blood and send out the body where we exhale

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2 years ago

1. Assuming that you expect five heads and five tails in ten tosses, how do the results of your tosses compare? How about the re

TEA [102]

Answer: is b

Explanation:

Because I saw other people put it

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2 years ago

- When will an absorption line will appear in a spectrum?

Tatiana [17]

An absorption line will appear in a spectrum if an absorbing material is placed between a source and the observer.

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2 years ago

Wood deposits recovered from an archaeological site contain 36% of the C-14 they originally contained. How long ago did the tree

Veseljchak [2.6K]

Answer: It was obtained 8515 years ago

Explanation:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process

a) to find the rate constant:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

$t_{\frac{1}{2}}=\frac{0.693}{k}$

$k=\frac{0.693}{5760}=0.00012years^{-1}$

b) for completion of 36% of reaction

$t=\frac{2.303}{k}\log\frac{100}{36}$

$t=\frac{2.303}{0.00012}\log\frac{100}{36}$

t = 8515 years

The time was 8515 years.

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3 years ago