One main difference between a Prokaryotic cell and an Eukaryotic cells is _________

August kekule described the various ring structures of the carbon compound benzene. What type of chemist would he be considered

Andreyy89

B. He would be considered an Organic Chemist since Organic Chemistry is the study of Carbon and its compounds.

3 0

3 years ago

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Applying the rules of significant figures, which of the following would be the correct value for the density of a substance whic

lilavasa [31]

16 g/ml

<h3>Further explanation</h3>

Given

mass = 32.40 g

volume = 2.0mL

Required

Density

Solution

Density is a quantity derived from the mass and volume

Density is the ratio of mass per unit volume

Density formula:

$\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}$

ρ = density

m = mass

v = volume

Input the value :

ρ = 32.40 g / 2.0 ml

ρ = 16.2 g/ml

Rules for division: The least number of significant figures in the problem determines the number of significant figures in the answer.

32.40 = 4 sig.fig

2.0 = 2 sig fig

The answer must be 2 sig fig

So the answer = 16 g/ml

6 0

3 years ago

2. Write the chemical equation for the reaction NaOH Sodium Hydroxide AgNO3 Silver Nitrate

lys-0071 [83]

Answer:

AgNO3 + NaOH = AgOH + NaNO3.

Explanation:

<em><u>Balancing Strategies: In this reaction, the products are initially NaNO3 + AgOH. However the AgOH would break down into Ag2O and H2O. This would give us NaNO3 + Ag2O + H2O as our products for the overall reaction.</u></em>

<em><u>Balancing Strategies: In this reaction, the products are initially NaNO3 + AgOH. However the AgOH would break down into Ag2O and H2O. This would give us NaNO3 + Ag2O + H2O as our products for the overall reaction.However, the equation balanced here is the initial reaction which produces AgOH and NaNO3.</u></em>

8 0

3 years ago

Which of the following represents alpha decay?

aliya0001 [1]

Answer: b

Explanation: alpha decay or particle consist of two protons and two neutrons hence it is a helium nucleus.

8 0

3 years ago

Propane fuel (C3H8) is burned with 30 percent excess air. Determine the mole fractions of each of the products. Also, calculate

elena-14-01-66 [18.8K]

Answer:mole fraction of carbon dioxide = 0.429;

mole fraction of water= 0.571

Mass of water in the products = 1.635g

Explanation:

The process of burning an hydrocarbon(example:propane) in air is called combustion. This reactions yields carbon dioxide, water and heat. With this information, we can generate a balanced equation of reaction as below:

C₃H₈ + 5O₂ ↔ 3CO₂ + 4H₂O

Note that there is 30% excess air. This means that there is enough oxgen to burn all the propane available. Thus it is a complete combustion process.

Mole fraction = number of moles/ total number of moles of the solution

Number of moles of C0₂= 3

Number of moles of H₂O= 4

Mole fraction of CO₂= 3/3+4= 3/7= 0.429

Mole fraction of H₂O= 4/3+4=4/7= 0.571

To calculate the mass of water in the products

Molar mass of C₃H₈= (3*12.011)+ (8*15.999)=44.067g

1mole of C₃H₈= 44.067g

using a unit mass of the fuel(propane)= 1g,

Therefore 1g of C₃H₈= 1/44.067= 0.02269moles

Looking at the equation of reaction, 1mole of C₃H₈ yields 4moles of water,

Therefore 0.02269moles of C₃H₈ will yield:

0.02269*4= 1.635g of H₂O

6 0

4 years ago

One main difference between a Prokaryotic cell and an Eukaryotic cells is __________.