Answer:
It was a cold December night shortly after dusk, a likely setting for an event that would prove to be life altering. As fate would have it, this would be the night that I lost the material possession that truly meant the most to me. I would lose the one thing that gave me much pride and joy and excitement. I often think back and liken us to a newlywed couple, for we had only been together for 18 months and were still very much honeymooning. It was a night, a moment, that even now scoffs and mocks me as I travel thither and yonder with her replacement. But she can never be truly replaced and to call my current fix a replacement seems like a sort of blasphemy.
I called her my Blue Angel. That's right! She was a brand new 1999 Atlantic blue Ford Mustang fully equipped with white racing stripes on each side, dark window tint, a rear spoiler, and a post-factory sound system that I installed personally just to complete the "dream ride" effect. We met on April 24, 1999,when my parents introduced us and told me she was all mine as a reward for graduating high school as valedictorian. And what a reward she turned out to be. We went everywhere together. I took her out to eat. When I'd go play ball somewhere, she went with me. Every day from April 24, 1999, to December 22, 2000, we were together. We were bonding in a way a young man can bond with no other, and there truly was no other for me. Other guys had bigger trucks and faster cars, but where my Blue Angel was lacking in size and power, she more than made up for in pure, unadulterated, raw emotion, She never let me down; she was always looking her best and never longing for attention from me or any of the other countless admirers and fans she won over for...
Explanation:
If 2.00 moles of H₂ and 1.55 moles of O₂ react how many moles of H₂O can be produced in the reaction below?
2 H₂(g) + O₂(g) → 2 H₂O(g)
Answer:
2 mol H₂O
Explanation:
With the reaction,
2H₂(g) + O₂(g) → 2 H₂O(g)1.55 moles of O₂ would react completely with ( 2*1.55 ) 3.1 moles of H₂. There are not as many moles of H₂, thus H₂ is the limiting reactant.
Now we calculate the moles of H₂O produced, starting from the moles of limiting reactant:
2.00 mol H₂ * [tex]\frac{2molH_2O}{2mol H_2}[/tex] = 2 mol H₂OThe number of moles of H₂O that could be produced in the reaction is 2.00 moles
From the question,
We are to determine the number of moles of H₂O that could be produced.
The given balanced chemical equation is
2 H₂(g) + O₂(g) → 2 H₂O(g)
This means,
2 moles of H₂(g) reacts with 1 mole of O₂(g) to produce 2 moles of H₂O
From the given information
Number of moles of H₂ present = 2.00 moles
and
Number of moles of O₂ present = 1.55 moles
Since,
2 moles of H₂(g) reacts with 1 mole of O₂(g) to produce 2 moles of H₂O
Then,
The 2.00 moles of H₂(g) will react with 1.00 mole of O₂(g) to produce 2.00 moles of H₂O
∴ 2.00 moles of H₂O will be produced during the reaction
(NOTE: Only 1.00 mole of the O₂(g) will react, meaning O₂(g) is the excess reactant)
Hence, the number of moles of H₂O that could be produced in the reaction is 2.00 moles
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At 25 ∘C only 0.0180 mol of the generic salt AB is soluble (at equilibrium) in 1.00 L of water.What is the value for Ksp for this salt at 25 ∘C?
Answer:
Ksp = 3.24 x 10⁻⁴
Explanation:
The dissociation equilibrium for a generic salt AB is:
AB(s) ⇄ A⁺(aq) + B⁻(aq)
s s
For instance, the expression for the Ksp constant is:
Ksp = [A⁺] [B⁻] = s x s = s²
According to the problem, 0.0180 mol of the salt is soluble in 1.00 L os water. That means that the solubility of the salt (s) is equal to 0.0180 mol per liter.
s = moles of solute/L of solution = 0.0180 mol/L
Thus, we calculate Ksp from the s value as follows:
Ksp = s² = (0.0180)² = 3.24 x 10⁻⁴
Where are each located? How does each contribute to the formation of the atom (think balance)?
Answer:
Where are what located no picks no pdf so what?
which have
different numbers of electrons?
Answer:
These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons. Different isotopes of the same element have different masses. Mass is the word for how much substance (or matter) something has.
How do you know your cell's are working
Adipic acid, C6H10O4, is a raw material for the making of nylon and it can be prepared in the laboratory by the following reaction between cyclohexene, C6H10, and sodium dichromate, Na2Cr2O7 in sulphuric acid.
3 C6H10 + 4 Na2Cr2O7 + 16 H2SO4 >
3 C6H10O4 + 4 Cr2(SO4)3 + 4Na2SO4 + 16 H2O
To prepare 12.5 grams of adipic acid in 68.6% yield requires how many grams of cyclohexen
Mass of Cyclohexen : 10.2 g
Further explanationReaction
3 C6H10 + 4 Na2Cr2O7 + 16 H2SO4 >
3 C6H10O4 + 4 Cr2(SO4)3 + 4Na2SO4 + 16 H2O
mol C6H10 : mol C6H10O4 = 3 : 3 = 1 : 1
[tex]\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\68.6\%=\dfrac{12.5}{theoretical}\times 100\%\\\\theoretical=18.22~g[/tex]
12.5 grams of C6H10O4 , mol C6H10O4 (MW 146.14 g/mol):
[tex]\tt \dfrac{18.22}{148}=0.123[/tex]
mol C6H10 = mol C6H10O4 = 0.124
mass C6H10 :
[tex]\tt 0.124\times 82.16=10.2~g[/tex]
At the Sparta Fault in Greece, the hanging wall is below the footwall. This type of fault is called a .
Answer:
1 a
Explanation:
if someone takes a breath and the lungs expand from 4.5 L to 5.6 L in volume, and the intial pressure inside the lungs is 756mm Hg,what was the pressure inside the lungs before any additional air is pulled in
Answer:
P₂ = 607 mmHg
Explanation:
Given data:
Initial volume = 4.5 L
Final volume = 5.6 L
Initial pressure = 756 mmHg
Final pressure = ?
Solution:
The given problem will be solved through the Boyle's law,
"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"
Mathematical expression:
P₁V₁ = P₂V₂
P₁ = Initial pressure
V₁ = initial volume
P₂ = final pressure
V₂ = final volume
Now we will put the values in formula,
P₁V₁ = P₂V₂
756 mmHg × 4.5 L = P₂ × 5.6 L
P₂ = 3402 mmHg. L/5.6 L
P₂ = 607 mmHg
defferent between crysttiline solid and amerphus solid
Answer:
Crystalline solids have well-defined edges and faces, diffract x-rays, and tend to have sharp melting points. In contrast, amorphous solids have irregular or curved surfaces, do not give well-resolved x-ray diffraction patterns, and melt over a wide range of temperatures.
Explanation:
Hope this helped!
9. What type of bond is pictured in the image below?
Alt
Alt
Alt
--
AI+
Alt
Alt
Alth
AN
1
a. covalent bond
b. ionic bond
c. metallic bond
d. electron bond
Answer:
metallic bond
because this diagram is electron gas theory which shows metallic bond
Which of these types of changes is a physical change?
A. Changing one substance into another
B. Dissolving one substance in another
C. Breaking apart one substance into two substances
D. Making a new substance
Answer:
answer is c
Explanation: cause there breaking it
Match each word with the correct definition. 1. to have an effect on someone or something technology 2. practical application of knowledge, tools and crafts heretic 3. a usual behavior, attitude or quality 4. an attitude of doubt or a belief that knowledge is not certain influence 5. a person who disagrees with an accepted belief skepticism
A definition is an explanation of a word or a term for clarity.
What is a definition?The term definition has to do with the correct explanation of a term or word.
The following are the appropriate definitions of the words;
heretic - a person who disagrees with an accepted belief skepticismtechnology - practical application of knowledge, tools and craftsinfluence - to have an effect on someone or somethingLearn more about definition:https://brainly.com/question/14217480?
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1. Heretic: A heretic is a person who disagrees with an accepted belief. For example, during the Middle Ages, individuals who questioned or challenged the teachings of the Catholic Church were often labeled as heretics.
2. Influence: Influence refers to the ability to have an effect on someone or something. It can be the power to shape someone's opinions, decisions, or behavior. For instance, parents, teachers, and friends can have a significant influence on a person's choices and actions.
3. Technology: Technology refers to the practical application of knowledge, tools, and crafts. It involves using scientific and engineering principles to create new devices, processes, or systems that enhance human life. Examples of technology include smartphones, computers, and medical equipment.
4. Skepticism: Skepticism is an attitude of doubt or a belief that knowledge is not certain. Skeptics question claims, ideas, or beliefs and seek evidence or logical reasoning to support them. For instance, a person who is skeptical of conspiracy theories would ask for concrete evidence before accepting such claims as true.
5. Habit: A habit is a usual behavior, attitude, or quality that is acquired through repetition and becomes automatic. It is often formed by consistently performing a specific action. For example, brushing teeth before bed can become a habit through repetition and eventually be done without conscious thought.
Sorry that was a lot to read (lol)
2Al(s) + 3H2SO4(aq) → Al2(SO4)3(aq) + 3H2(g)a. Determine the volume (mL) of 15.0 M sulfuric acid needed to react with 45.0 g of aluminum to produce aluminum sulfate.b. Determine the % yield if 112 g of aluminum sulfate is produced under the above conditions.
Answer:
a. 167 mL.
b. 39.3 %.
Explanation:
Hello!
In this case, for the undergoing chemical reaction, since 45.0 g of aluminum react, based on the 2:3 mole ratio with sulfuric acid, we can compute the required moles as shown below:
[tex]n_{H_2SO_4}=45.0gAl*\frac{1molAl}{27.0gAl} *\frac{3molH_2SO_4}{2molAl} =2.50molH_2SO_4[/tex]
Next, since the molarity of a solution is computed based on the moles and volume (M=n/V), we can compute the required volume of sulfuric acid as shown below:
[tex]V=\frac{n}{M}=\frac{2.50mol}{15.0mol/L}=0.167L[/tex]
That in mL is 167 mL.
Moreover, for the percent yield, we compute the grams of aluminum sulfate that are produced based on the required 2.50 moles of sulfuric acid:
[tex]m_{Al_2(SO_4)_3}=2.50molH_2SO_4*\frac{1molAl_2(SO_4)_3}{3molH_2SO_4}*\frac{342.15gAl_2(SO_4)_3}{1molAl_2(SO_4)_3} \\\\m_{Al_2(SO_4)_3}=285.13gAl_2(SO_4)_3[/tex]
Therefore the percent yield is:
[tex]Y=\frac{112g}{285.13g}*100\%\\\\Y=39.3\%[/tex]
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which has a higher melting point CH3CH2CH2CH2CH2CH3 or CH3CH2CH2CH2CH2CH2CH2CH3
Answer:
the second one
Explanation:because its higher
Answer:
CH3CH2CH2Ch2Ch2Ch3
Explanation:
That's the answer
if there is no mass # and n # how do you find the mass # and n #
1. How many atoms are in 0.25 moles of carbon?
2. How many atoms are in 12.3 grams of sodium?
3. How many grams are there in 0.52 moles of boron?
4. How many grams are there in 2.0 moles of HCl?
5. How many moles are in 3.4 grams of HBr?
6. How many grams are there in 4.5x10^10 atoms of NaCl?
7. How many atoms are there in 45.1 grams of MgO?
Answer 1 mole = 6.02 × 1023 atoms
0.25 moles × (6.02 × 1023) = 1.5 × 1023 atoms Carbon
for the first one
Phases of matter
Soild
*
*
*
Liquid
*
*
*
Gas
*
*
A competitive high school swimmer takes 56.7 seconds to swim 100. yards. What is his rate in m/min?
m
min
Answer:
96.72 m/min
Explanation:
The following data were obtained from the question:
Time (t) = 56.7 s
Distance (d) = 100 yard
Rate (R) =?
Next, we shall convert 56.7 s to minutes. This can be obtained as follow:
60 s = 1 min
Therefore,
56.7 s = 56.7 s × 1 min /60 s
56.7 s = 0.945 min
Next, we shall convert 100 yard to metre (m). This can be obtained as follow:
1 yard = 0.914 m
Therefore,
100 yard = 100 yard × 0.914 m /1 yard
100 yard = 91.4 m
Finally, we shall determine the rate of the swimmer as follow:
Time (t) = 0.945 min
Distance (d) = 91.4 m
Rate (R) =?
R = d/t
R = 91.4/0.945
R = 96.72 m/min
Thus the rate of the swimmer is 96.72 m/min
A gas at constant temperature has a pressure of 404.6 kPa with a volume of 12 ml. If the volume changes to 43ml, what is the new pressure
Answer:
The answer is
112.912 kPaExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we are finding the new pressure
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
404.6 kPa = 404600 Pa
From the question we have
[tex]P_2 = \frac{404600 \times 12}{43} = \frac{4855200}{43} \\ = 112911.6279... \\ = 112912[/tex]
We have the final answer as
112.912 kPaHope this helps you
How many atoms are in 1.4 mol of phosphorus trifluoride (PF3)?
Number of atoms in 1.4 mol of Phosphorus trifluoride (PF₃) : 8.428 x 10²³
Further explanationThe mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
1.4 mol of Phosphorus trifluoride (PF₃), number of atoms :
[tex]\tt N=1.4\times 6.02\times 10^{23}\\\\N=8.428\times 10^{23}[/tex]
Why does determining volume work only for a regular shaped object
Answer:
Because only regular-shaped objects have a consistent length, width, height, and shape.
Explanation:
Because only regular-shaped objects have a consistent length, width, height, and shape. When dealing with an object composed of differing shapes, your must calculate each portion separately and then add them.
What are the different layers of the earth and how do they interact.
Answer: The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere . The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere . The asthenosphere is the part of the mantle that flows and moves the plates of the Earth.
Explanation:
Phrase to describe ice
Answer:
Here are some adjectives for ice: para-elemental, kinder thin, thick continental, invisibly transparent, dirty, rock-hard, immense and almost innumerable, thin, flawless, horizontal and pelting, nearly horizontal and pelting, more pelting, beautifully numbing, pure compact, new catastrophic, dirty brash, largely foamy, ...
Explanation:
What mass of glucose (C6H12O6) should be dissolved in 12.0 kg of water to obtain a solution with a freezing point of -5.8 ∘C?
Solution properties are the properties of a solution that don't depend on the type of solute but only on the concentration of the solute.
Solutions from volatile substances have a higher boiling point and lower freezing points than the solvent
For freezing point can be formulated
[tex]\tt \Delta T_f=K_f.m[/tex]
K = molal freezing point constant
m = molal solution
A solution with a freezing point of -5.8 ∘C
[tex]\tt \Delta T_f=T_f~solvent-T_f~solution=0-(-5.8)=5.8[/tex]
[tex]\tt mass~of~glucose:\\\\\Delta T_f=K_f.m\\\\5.8=1.86^oC/m.\times \dfrac{mol~glucose}{12}\\\\mol~glucose=\dfrac{5.8\times 12}{1.86}=37.42[/tex]
[tex]\tt mass=mol\times MW=37.42\times 180=6735.6~g=6.7356~kg[/tex]
Gallium is produced by the electrolysis of a solution made by dissolving gallium oxide in concentrated NaOH(aq). Calculate the amount of Ga(s) that can be deposited from a Ga(III) solution using a current of 0.710 A that flows for 60.0 min.
Answer:
0.00883 mol
Explanation:
Let's consider the reduction reaction of gallium.
Ga³⁺(aq) + 3 e⁻ ⇒ Ga(s)
We can establish the following relationships:
1 min = 60 s1 A = 1 C/s1 mole of electrons have a charge of 96486 C (Faraday's constant)When 3 moles of electrons circulate, 1 mole of Ga is depositedThe amount of Ga deposited using a current of 0.710 A that flows for 60.0 min is:
[tex]60.0min \times \frac{60s}{1min} \times \frac{0.710C}{s} \times \frac{1mole^{-} }{96486C} \times \frac{1molGa}{3mole^{-}} = 0.00883 molGa[/tex]
Explain how astronomers use spectrographs to identify the composition of a star.
Spectrographs are useful to astronomers as they help in studying the composition of a star as each component absorbs light at specific wavelengths.
What are spectrographs?It is defined as a graph which depicts the spectral information about the component. Spectrographs consisting of lines are called atomic spectra as the lines represent wavelengths which are radiated from atoms when electrons jump or make a transition from one energy level to another.
Band spectra is given to a group of lines spectrum which are so close that they appear like a band . They are produced by molecules when they radiate their vibrational or rotational energies.
Amount of light which is absorbed is unique for each element and hence astronomers can measure the position of lines to determine which elements are present in the target.
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2.If a liquid has a volume of 5800 mL and you need the volume in Liters, will the number appear to
become smaller or larger?
Answer:
The number becomes smaller
Explanation:
Volume = 5800mL
To be converted to L
The relationship between mL and Liters is given as;
1 L = 1000 mL
This means that;
1 L = 1000 mL
x L = 5800 mL
x = 5800 / 1000 = 5.8 L
Comparing 5.8 with 5800, the number becomes smaller.
What are the starting substances (molecules) in a chemical equation called?
Answer:
A chemical reaction is the process in which atoms present in the starting substances rearrange to give new chemical combinations present in the substances formed by the reaction. These starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products.
How many atoms do the elements of sodium hypochlorite have?
Answer:
The chemical formula is NaClO and consists of one atom of sodium (Na), one atom of chlorine (Cl) and one atom of oxygen (O).
Molecular Weight/ Molar Mass: 74.44 g/mol
Density: 1.11 g/cm³
Explanation:
How does the density and distribution of your “stars” change as the balloon expands?
Answer:
The Universe is constantly expanding and as it expands the stars and objects in space move farther apart, just like the points on the balloon when air is blown into it. Density and distribution of "stars" as the balloon expands because when volume increases the density will increase.
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