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Sedaia [141]
3 years ago
15

Think about a stalk of corn. You can see it has roots, a stalk, and leaves. You know it reproduces with pollen from the tassels

falling onto the silk of ears. You can’t see the cells in it without a microscope. What evidence could you gather just from the observation that a corn stalk is more likely to be made of eukaryotic cells and not prokaryotic cells?
Chemistry
1 answer:
Shkiper50 [21]3 years ago
5 0

Answer:

The cells of which the corn plant is made up of are eukaryotic cells.

EXPLANATION:

They have all the features such as nucleus and organelles such mitochondria and an endoplasmic reticulum. More primitive forms of life such as bacteria are prokaryotes and lack these things except they do have ribosomes like eukatyotes. Genetic information is processed differently in prokaryotes and eukaryotes but that is another question altogether.;)

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A solution is made by dissolving 100. g of cobalt(III)chloride in 250. g of water. to make a solution that has a density of 1.25
Mariulka [41]

Answer:

Option A) (I) 2.42 m (II) 2.16 M

Explanation:

Let's determine some information.

Solute = CoCl₃ (molar mass = 165.29 g/m); mass of 100 g

Solvent = Water, mass of 250 g

Solution mass = mass of CoCl₃ + mass of water

250 g + 100 g = 350 g of solution

If we want to reach molarity (mol/L), let's determine solution volume with density:

Solution density = solution mass / solution volume

1.25 g/mL = 350 g / solution volume

Solution volume = 350 g / 1.25 g/mL = 280 mL

Let's convert the volume to L → 280 mL = 0.280L

Let's convert the mass of solute to moles = 100 g / 165.29 g/m →0.605 mol

Mol/L = 0.605 moles / 0.280 L = 2.16 M

Now let's calculate molalilty (mol/kg of solvet)

We must convert solvent mass to kg → 250g = 0.250 kg

Then, 0.605 moles / 0.250 kg =2.42 m

8 0
4 years ago
What is the overall reaction order for this rate law: rate= k[a][b]?
SpyIntel [72]
The overall reaction order is 2, because you add the orders of the individual components, which each are 1. 
7 0
3 years ago
When the moon is between the earth and the sun how is the moon most likely seen
kvasek [131]

Its seen like the lunar shadow

7 0
4 years ago
Find the pH of a 0.00476M HCI solution​
Alex777 [14]

Ans:2.3

Explanation:

pH = -log[H+(aq)]

= -log[0.00476]

=2.3

As HCl solution is monobasic. Each molecule ionizes in water to form ONE hydrogen ion. So the H+(aq) is equal to its molarity.

5 0
3 years ago
How many moles of MgO are produced when .250 mol of Mg reacts completely with O2
artcher [175]

Answer:

0.250 mol

Explanation:

The reaction between Mg and O2 is given by;

2Mg + O2 --> 2MgO

From the equation above; 2 moles of Mg reacts to form 2 moles of MgO.

0.250 mol of Mg would produce x mol of MgO.

2 = 2

0.250 = x

x = 0.250 * 2/2 = 0.250 mol

7 0
4 years ago
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