Which of the following solutions is more dilute?A.The solution with 10 grams of honey and 100 mL of water.
B.The solution with 5 grams of honey and 100 mL of water.
C.The solution with 15 grams of honey and 100 mL of water.
D.The solution with 20grams of honey and 100 mL of water.

Answers

Answer 1

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What types of atoms are shown in a skeletal model of an organic molecule?A. Atoms of every element except carbon
B. Atoms of every element except hydrogen
C. Atoms of every element
D. Atoms of every element except carbon and hydrogen

Answers

Answer:

Atoms of every element are shown in a skeletal model of an organic molecule.

Explanation:

Skeletal model of an organic molecule consists of various skeletal atoms that are used in making up of the molecule. Various conventions of hydrogen and carbon atoms are employed in it. The molecules bonding and certain representation of molecular geometry are shown in the structural formula.

Use of skeletal formula is ubiquitous in organic chemistry. Thus, in organic chemistry atoms of every element are shown in the skeletal model of an organic molecule

What is the diffrence between speed and avarege speed

Answers

Speed is actually instantaneous speed, the speed an object is moving at that very instant.
But average speed is the total distance traveled divided by the total time.
Let's say you travelled 10 miles in 2 hours, your average speed would be 10 divided by 2, which is 10 miles / hr.

But during those 10 miles you may be accelerating, decelerating and be travelling 1 mile/hour and 20 miles/hour at another point. But your average speed would be total distance / total time. So your instantaneous speed can change throughout that period of time.

Average speed is the time in wchich you travelled a certain distance averaged out (distande divided by time)
Speed is just how fast an object moves

4. Allison is trying to identify the type of bacteria found on common surfaces like doorknobs, table tops, etc. For this experiment, she will collect samples of bacteria and allow them to grow for several days. Then, she will observe the bacterial colonies that are formed and compare their appearance with pictures of bacterial colonies in her textbook. Which of the following pieces of equipment will Allison most likely use for the growth of the bacteria?

Answers

You will use a....
Microscope
Graduated Cylinder
Beaker
Petri Dish

Please help!!!The reaction of sulfuric acid (H2SO4) with potassium hydroxide (KOH) is described by the equation below. Suppose
0.06 L of KOH with unknown concentration is placed in a flask with bromthymol blue indicator. A solution of 0.20 M
H2504 is dripped into the KOH solution. After exactly 0.017 L of H2SO4 is added, the Indicator changes from blue to
yellow. What is the concentration of the KOH? You must show all of your work to earn credit. (4 points)
H2SO4 + 2KOH → K2SO4 + 2H20

Answers

Answer:

$\large\boxed{\large\boxed{1M}}$

Explanation:

1. Reaction

$H_2SO_4+2KOH\rightarrow K_2SO_4+2H_2O$

2. Mole ratio

$(2molKOH)/(1molH_2SO_4)$

3. Sulfuric acid

$Molarity=(moles)/(volume(liters))$

$Moles=Molarity* Volume(liters)$

$Moles=0.20M* 0.017liter=0.034molH_2SO_4$

4. Potassium hydroxide

$(2molKOH)/(1molH_2SO_4)* 0.034molH_2SO_4=0.068molKOH$

$Molarity=(0.068mol)/(0.06liter)=1.13M\approx 1M$

Consider the reaction below. 2Al2O3 4Al + 3O2 How many moles of oxygen are produced when 26.5 mol of aluminum oxide are decomposed? 17.7 mol19.9 mol39.8 mol53.0 mol

Answers

2 Al2O3 = 4 Al + 3 O2

2 moles Al2O3 ------------ 3 moles O2
26.5 moles ----------------- moles O2

moles O2 = 26.5 * 3 / 2

moles O2 = 79.5 / 2 => 39.8 moles O2

Answer : C . ) 39.8 Is The Correct Answer

A glass laboratory flask is filled with gas at 24 ∘C and 0.95 atm pressure, sealed, and then heated to 104 ∘C. What is the pressure inside the flask?

Answers

The pressure inside the flask on heating it is given as 1.21 atm.

Explanation:

As per Guy Lussac's law, the pressure of any concealed volume of gas particles will be directly proportional to the temperature of the container of the gas particles.

So P ∝ T

To convert celsius to kelvin, add 273.15 to the temperature value in celsius

Since, here the initial temperature of the flask is given as 24°C, so in kelvin it will be 297.15 K. Similarly, the final temperature is said to be 104°C which will be equal to 377.15 K. Then the final pressure will be increased as there is increase in temperature. So, the final pressure inside the flask can be obtained as

$(P_(1) )/(T_(1) ) = (P_(2) )/(T_(2) )$

$P_(2) = (P_(1) )/(T_(1) ) * T_(2) =(0.95)/(297.15) * 377.15 =1.21\ atm$

So, the pressure inside the flask on heating it is given as 1.21 atm.

Final answer:

Using Gay-Lussac's law, the final pressure of the gas in the flask after heating from 24°C to 104°C, under a constant volume, is approximately 1.2 atm.

Explanation:

The pressure inside the flask can be calculated by using Gay-Lussac's law, which states that the pressure of a gas is directly proportional to its absolute temperature, as long as volume is constant. This is formally expressed as P1/T1 = P2/T2, where P is pressure, T is absolute temperature (in Kelvin), and the subscripts refer to initial and final states.

First, convert the Celsius temperatures to Kelvin by adding 273.15 to the Celsius temperature. T1 = 24°C + 273.15 = 297.15 K, and T2 = 104°C + 273.15 = 377.15 K. Next, rearrange the equation to solve for P2: P2 = P1 (T2 / T1).

So, P2 = 0.95 atm * (377.15 K / 297.15 K) ≈ 1.2 atm. Therefore, the pressure inside the glass laboratory flask after heating to 104°C would be approximately 1.2 atm.