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3 years ago

List 2 similarities and differences between prokaryotic and eukaryotic cells. Will give brain

Chemistry

2 answers:

gtnhenbr [62]3 years ago

8 0

Answer:prokaryotes:no nucleus,cell wall and cell membrane

eukaryotic:has nucleus,and endoplasmic reticulum

Explanation:

steposvetlana [31]3 years ago

4 0

Answer:

Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus, and has other membrane-bound organelles that allow for compartmentalization of functions.The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is only one of many membrane-bound organelles in eukaryotes. Prokaryotes, on the other hand, have no membrane-bound organelles.

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1. convert 8.43 x 1025 atoms of Fe to moles

Luba_88 [7]

Answer:

The number of moles of Fe are, 139.9 moles.

The number of moles of CO are, 7.89 moles.

The number of moles of Al are, $4.04\times 10^{-4}$ moles.

Explanation :

As we know that 1 mole of substance contains $6.022\times 10^{23}$ atoms or molecules.

Part 1:

As, $6.022\times 10^{23}$ atoms of Fe present in 1 mole

So, $8.43\times 10^{25}$ atoms of Fe present in $\frac{8.43\times 10^{25}}{6.022\times 10^{23}}\times 1=139.9$ mole

Thus, the number of moles of Fe are, 139.9 moles.

Part 2:

As, $6.022\times 10^{23}$ molecules of CO present in 1 mole

So, $4.75\times 10^{24}$ molecules of CO present in $\frac{4.75\times 10^{24}}{6.022\times 10^{23}}\times 1=7.89$ mole

Thus, the number of moles of CO are, 7.89 moles.

Part 3:

As, $6.022\times 10^{23}$ atoms of Al present in 1 mole

So, $2.43\times 10^{20}$ atoms of Al present in $\frac{2.43\times 10^{20}}{6.022\times 10^{23}}\times 1=4.04\times 10^{-4}$ mole

Thus, the number of moles of Al are, $4.04\times 10^{-4}$ moles.

4 0

3 years ago

Solutions of hydrochloric acid caused the light bulb to glow brighter than solutions of acetic acid. how do you account for the

maksim [4K]

<span>The primary difference between hydrochloric acid and acetic acid is that hydrochloric acid undergoes a complete ionization, whereas acetic acid does not. This is why a light bulb will burn brighter in the solutions of hydrochloric acid, and also why hydrochloric acid is considered a strong acid, while acetic acid is considered a weak acid.</span>

7 0

3 years ago

Na2SO4(aq) + CaCl2(aq) --> CaSO4(s) +

Olenka [21]

Answer:

double replacement

Explanation:

7 0

3 years ago

PLZ HELP

Natali5045456 [20]

Answer:

Temperature is the average kinetic energy of particles of an object. Warmer objects have faster particles and higher temperatures.

Explanation:

If two objects have the same mass, the object with the higher temperature has greater thermal energy. Temperature is measured with a thermometer.

5 0

3 years ago

(Help would be greatly appreciated, chemistry is not my strong suit) How many moles of NaCl are present in a solution with a mol

tatyana61 [14]

Molarity is a unit of concentration defined as the number of moles of solute (the substance being dissolved) per volume of solution (the solvent in which all the solute is dissolved). Mathematically, molarity is expressed as

$M = \frac{\text{ mol solute}}{\text{ L solution}}$ .

In this question, we are given the molarity and the volume of a solution of NaCl. We can use this information to calculate the number of moles of NaCl present in the solution. Rearranging the equation to solve for moles of solute, we multiply the molarity by the volume of the solution (the units for volume must be in liters, so 125 mL is expressed as the equivalent 0.125 L):

$(8.59 \text{ M})(0.125 \text{ L}) = 1.07 \text{ moles of NaCl}.$

The question asks for the number of moles of NaCl in this solution, so number 3 would be correct.

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3 years ago