3 years ago

Which part of a root transport water and nutrients

Chemistry

2 answers:

sergeinik [125]3 years ago

8 0

Soil transports water and nutrients

Aleks [24]3 years ago

6 0

xylem of the roots transfers water and nutrients from soil to the different parts of plant.

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A solution is made by mixing 37.g of thiophene C4H4S and 72.g of heptane C7H16. Calculate the mole fraction of thiophene in this

guajiro [1.7K]

Answer:

0.38

Explanation:

Molar mass of thiophene= 84g/mol

Mass of thiophene = 37g

Number of moles= 37/84= 0.44 moles

Molar mass of heptane= 100 g/mol

Mass of heptane = 72g

Number of moles = 72/100= 0.72 moles

Total number of moles= 0.44 + 0.72= 1.16 moles

mole fraction of thiophene = 0.44/1.16= 0.38

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3 years ago

If this decay has a half life of 2.60 years, what mass of 72.5 g of sodium 22 will remain after 15.6 years

Vlad1618 [11]

Sodium-22 remain : 1.13 g

<h3>Further explanation </h3>

The atomic nucleus can experience decay into 2 particles or more due to the instability of its atomic nucleus.

Usually, radioactive elements have an unstable atomic nucleus.

General formulas used in decay:

$\large{\boxed{\bold{N_t=N_0(\dfrac{1}{2})^{T/t\frac{1}{2} }}}$

T = duration of decay

t 1/2 = half-life

N₀ = the number of initial radioactive atoms

Nt = the number of radioactive atoms left after decaying during T time

half-life = t 1/2=2.6 years

T=15.6 years

No=72.5 g

$\tt Nt=72.5.\dfrac{1}{2}^{15.6/2.6}\\\\Nt=72.5.\dfrac{1}{2}^6\\\\Nt=1.13~g$

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4 years ago

What is the pressure (in Pascals) of a sample of nitrogen that is at 625 mmHg?

Digiron [165]

Answer:

83,000 cause it is

Explanation:

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3 years ago

Which are the nutrients essential to us

Harlamova29_29 [7]

Explanation:

carbohydrate,fat,protein, vitamin, mineral, water

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3 years ago

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Sheep are grazing animals that survive best in areas where there is plenty of grass.

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Grass contains water and sheep need water.

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2 years ago