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3 years ago

What part of fungi resembles the roots of plants?

1 answer:

6 0

The answer is hyphae. They are long, branching filamentous structures that are analogous to roots in plants. They secrete enzymes that digest the substrate extracellularly. The hyphae then absorb the digested nutrients. While the cell wall of the plants is made of cellulose, that of fungi as made of chitin

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Strontium-90 is a radioisotope that will decrease in mass by one-half every 29 years. How many years will it take for a 10.0-gra

Lelechka [254]

Answer: It will take 29 years for a 10.0-gram sample of strontium-90 to decay to 5.00 grams

Explanation:

Radioactive decay process is a type of process in which a less stable nuclei decomposes to a stable nuclei by releasing some radiations or particles like alpha, beta particles or gamma-radiations. The radioactive decay follows first order kinetics.

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

Half life is represented by $t_{\frac{1}{2}$

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

$\lambda$ = rate constant

Given : Strontium-90 decreases in mass by one-half every 29 years , that is half life of Strontium-90 is 29 years.

As half life is independent of initial concentration, it will take 29 years for a 10.0-gram sample of strontium-90 to decay to 5.00 grams as the amount gets half.

7 0

3 years ago

Can u help me with this

dolphi86 [110]

Answer:

Explanation:

the reason is because your a homosiejenenddj

8 0

2 years ago

What is the number of moles of 27.6 grams of lithium

Leya [2.2K]

Lithium's atomic weight is 6.94 g/mol.

$27.6 g Li (\frac{mol}{6.94 g}) = 3.98 mol Li$

Need anything else?

6 0

3 years ago

Wine goes bad soon after opening because the ethanol CH3CH2OH dissolved in it reacts with oxygen O2 gas to form water and aqueou

bagirrra123 [75]

Answer:

We need 0.095 moles of ethanol

Explanation:

Step 1: Data given

Number of moles water = 0.095 moles

Step 2: The balanced equation

CH3CH2OH + O2 ⇒ H2O + CH3COOH

Step 3: Calculate moles of ethanol

For 1 mol ethanol we need 1 mol oxygen to produce 1 mol water and 1 mol acetic acid

For 0.095 moles water, we need 0.095 moles ethanol and 0.095 moles oxygen

We need 0.095 moles of ethanol

5 0

3 years ago

Un lote de 250 pijamas tiene un de 20.000, ¿cuál es el costo de cada pijama?

zysi [14]

Answer in file below

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6 0

3 years ago