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Alex_Xolod [135]
3 years ago
8

when a flower is ready to become a fruit here would the instruction be found A.Plant ovum B.Nucleus C.Mitochondria D.Ribosomes

Chemistry
1 answer:
Marat540 [252]3 years ago
7 0

i thnk its the answer a. idk im not sure.


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neonofarm [45]

Answer:

Imao ;/

Explanation:

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3 years ago
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How long will it take for a 750 mg sample of radium with a half life of 15 days to decay to exactly 68mg?
weqwewe [10]

Answer:

52 da  

Step-by-step explanation:

Whenever a question asks you, "How long to reach a certain concentration?" or something similar, you must use the appropriate integrated rate law expression.

The i<em>ntegrated rate law for a first-order reaction </em>is  

ln([A₀]/[A] ) = kt

Data:

[A]₀ = 750 mg

 [A] =    68 mg

t_ ½ =   15 da

Step 1. Calculate the value of the rate constant.

 t_½ = ln2/k     Multiply each side by k

kt_½ = ln2         Divide each side by t_½

      k = ln2/t_½

         = ln2/15

         = 0.0462 da⁻¹

Step 2. Calculate the time

ln(750/68) = 0.0462t

         ln11.0 = 0.0462t

            2.40 = 0.0462t     Divide each side by 0.0462

                   t = 52 da

8 0
3 years ago
Describe how the introduction of a new Predator can cause a species
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When a female animal and a male see each other the male would show off and they woulf matr and make a baby then the babys will grow up and make more
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3 years ago
Identify each of the following compounds as binary or ternary. Then write the chemical formula for each ionic compound.
Maurinko [17]
Binary compounds have 2 different elements, and ternary compounds have 3
Nickel(III)oxide:  binary, Ni2O3
Copper (II)iodide: binary, CuI2
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Chromium (II)bromide: binary, CrBr2
<span>Iron(III)phosphide: binary, FeP</span>
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3 years ago
What property is primarily responsible for determining the type of electromagnetic energy and peak wavelength emitted by a star
svetoff [14.1K]
The answer i think it is... is Temperature 
Hope this helped!
6 0
3 years ago
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