Why does a floating leaf indicate photosynthesis has occurred

1 answer:

4 0

This is because leaves have air in the spaces between cells, which helps them collect CO2 gas from their environment to use in photosynthesis.

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The mass of an atom may be found by adding the

Darina [25.2K]

Answer:

protons and neutrons

Explanation:

5 0

2 years ago

Iodine-131 decays with a half-life of 8.02

dlinn [17]

Radioactive material undergoes 1st order decay kinetics.

For 1st order decay, half life = 0.693/k

where k = rate constant

k = 0.693/half life = 0.693/8.02 = 0.0864 day-1

Now, for 1st order reaction,
k = $\frac{2.303}{t} X log \frac{initial.conc}{final.conc}$

Given: t = 6.01d, initial conc. = 5mg

∴0.0864 = $\frac{2.303}{6.01} X log \frac{5}{final.conc}$
∴ final conc. = 2.975 mg

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3 years ago

This map shows the ages of the Atlantic oceanic crust

tamaranim1 [39]

No
Of course not cause it will only locate where the ocean is , it will not show the age.

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2 years ago

You are given two fatlike solid substances and determine that sample a has a higher melting point than sample

Alchen [17]

Given that <span>sample a has a higher melting point than sample
b. Therefore, sample a is a longer chain of a </span><span>fatlike solid substance. It could also be that the bonds present in sample a is much stronger which will require more energy to break. Hope this answers the question.</span>

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2 years ago

How many is the maximum number of electrons for n=4

mihalych1998 [28]

In Chemistry, to better determine the position of a certain electron, quantum numbers are used. The four quantum numbers are n, l, m and s. In the given above of n= 4, the principal quantum number is 4 and this represents the overall relative energy in the orbital. This means that we are to find the maximum number of electrons in fourth main energy level and the answer is 32.

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3 years ago