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3 years ago

The diagram illustrates photosynthesis.

Chemistry

2 answers:

Dimas [21]3 years ago

6 0

The correct answer would be A.

Have a nice day (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧

Talja [164]3 years ago

3 0

Answer:

The correct answer is "Oxygen is released into the atmosphere through stomata."

Explanation:

A plant needs water, (H₂O) carbon dioxide, (CO₂) and light energy to produce food that is oxygen (O₂) and glucose through a process known as "photosynthesis".

Water + Carbon dioxide + Light energy = Oxygen + Glucose

In the attached diagram, it is shown that plant releases oxygen into the atmosphere through the leaves (stomata).

The stomata controls the flow of oxygen and carbon dioxide into and out of the plant whereas xylem is used for the transportation of water from the roots to the leaves in the plant.

The process of photosynthesis only happens when the light is present, plants have a pigment named "chlorophyll" which absorbs the light energy.

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In this Punnett square, what is the probability of the offspring being a heterozygous purple flower

olya-2409 [2.1K]

Heterozygous means A capital P with a lowercase p. There are two purple flowers in the Punnett square with Pp out of 4 possible options. 2/4 is 1/2 which is 50%. So there is a 50% chance of a purple heterozygous flower.

8 0

2 years ago

A compound contains only carbon, hydrogen, nitrogen, and oxygen. Combustion of 0.157g of the compound produced 0.213g of CO2 and

vladimir2022 [97]

Answer:

$C_{7} H_{5}N_{3}O_{6}$

Explanation:

First reaction gives you the number of moles or the mass from Carbon and hydrogen

for carbon:

$0,213gCO_{2} .\frac{1molCO_{2}}{44gCO_{2}} .\frac{1molC}{1molCO_{2}} =0.005molC$

$0.213gCO_{2} .\frac{1molCO_{2}}{44gCO_{2}} .\frac{1molC}{1molCO_{2}} .\frac{12gC}{1molC} = 0.058gC\\$

Analogously for hydrogen:

0.0310g $H_{2}O$ have 0.0034gH or 0.0034mol of H

In the second reaction you can obtain the amount of nitrogen as a percentage and find the mass of N in the first sample.

$0.023gNH_{3} .\frac{1molNH_{3}}{17gNH_{3}} .\frac{1molN}{1molNH_{3}} .\frac{14gN}{1molN} \frac{100}{0.103gsample} =18.4%N$

now

$\frac{18.4gN}{100gsample} .0.157gsample=0.0289gN in the first reaction$

this is equivalet to 0.002mol of N

with this information you can find the mass of oxygen by matter conservation.

$gO=total mass-(gN+gC+gH)=0.157-(0.0289+0.058+0.0034)=0.0666gO$

this is equivalent to 0.004molO

finally you divide all moles obtained between the smaller number of mole (this is mol of H)

$C\frac{0.0048}{0.0034} H\frac{0.0034}{0.0034} N\frac{0.002}{0.0034} O\frac{0.004}{0.0034} =C_{1.4} HN_{0.6} O_{1.2}$

and you can multiply by 5 to obtain: $C_{7} H_{5}N_{3}O_{6}$

4 0

3 years ago

When the reaction A → B + C is studied, a plot 1/[A]t vs. time gives a straight line with a positive slope. What is the order of

zloy xaker [14]

Answer:

Second order

Explanation:

Given that:

When the reaction A → B + C is studied, a plot 1/[A]t vs. time gives a straight line with a positive slope.

From the integration method for the second order of reaction.

Suppose that:

rate = k₂[A]²

∴

$\dfrac{1}{A}=\dfrac{1}{A_0}+k_2t$

Therefore, a plot of the linear function $\dfrac{1}{A}$ versus t will be linear with a positive slope k₂ and the intercept on the concentration axis will be $\dfrac{1}{A_o}$