Answer:
Compact cars with smaller engines can't achieve more than 30 mpg because of the weight difference
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Name the following branched alkanes. Two of these are isomers of each other, put a star ★ in their boxes.
Answer:
square boxes
✪
Explanation:
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Net ionic equation for Calcium hydroxide reacting with ammonium Chloride?
Answer:
Ca(OH)₂ (aq) + 2NH₄Cl (aq) → CaCl₂ (aq) + 2NH₃ (g) + 2H₂O (l)
Ca²⁺ + 2OH⁻ + 2NH₄⁺ + 2Cl⁻ → Ca⁺² + 2Cl⁻ + 2NH₃ (g) + 2H₂O (l)
2OH⁻ + 2NH₄⁺ → 2NH₃ (g) + 2H₂O (l)
Explanation:
ca (OH)2 + 2NH4CL------> CACL2 + 2NH3 + 2H2O
What is the mole fraction of each component of a gas mixture that contains
sulfur trioxide at a pressure of 1.55 atm and sulfur dioxide at a pressure of
0.35 atm?
Answer:
A model of a shopping centre is drawn to scale where 1 cm on the model represent 4 m on the ground. Music shop Thabo's Sports Ware Fati's Clothing shop Grocery store PARKING Coffee shop Toilets Restaurant Shoe store Physiotherapy Health and Fitness center 1.1 Which shop is on the right of the physiotherapy? (2) 1.2 Describe the position of the Coffee Shop in relation to the Toilets. (2)
# 20 of Equilibrium
At 1500°C the system:
2NO(g)
N₂(g) + O₂(g) was allowed to come to equilibrium. The equilibrium concentrations were:
NO(g) = 0.0021 M; N₂ = O₂ = 0.239 M.
What is the value of Ke at this temperature?
Select one:
O a.
27.2
O b.
7.7 x 10-5
O c.
3.7 x 10-²
d.
1.3 x 104
O e. 8.8 x 10-3
Answer:
# 20 of Equilibrium
At 1500°C the system:
2NO(g)
N₂(g) + O₂(g) was allowed to come to equilibrium. The equilibrium concentrations were:
NO(g) = 0.0021 M; N₂ = O₂ = 0.239 M.
What is the value of Ke at this temperature?
Select one:
O a.
27.2
O b.
7.7 x 10-5
O c.
3.7 x 10-²
d.
1.3 x 104
O e. 8.8 x 10-3
Explanation:
# 20 of Equilibrium
At 1500°C the system:
2NO(g)
N₂(g) + O₂(g) was allowed to come to equilibrium. The equilibrium concentrations were:
NO(g) = 0.0021 M; N₂ = O₂ = 0.239 M.
What is the value of Ke at this temperature?
Select one:
O a.
27.2
O b.
7.7 x 10-5
O c.
3.7 x 10-²
d.
1.3 x 104
O e. 8.8 x 10-3
Atmospheric pressure on the peak of Kilimanjaro can be as low as 0.20 atm. If the volume of an oxygen tank is 10.0L, at what pressure must the tank be filled so the gas inside would occupy a volume of 1.2 x 1043 L at this pressure?
Answer:
24 atm
Explanation:
From Boyle's Law :
P₁V₁ = P₂V₂Given values :
P₂ = 0.2 atmV₁ = 10.0 LV₂ = 1.2 x 10³ LSolving
P₁ × 10 = 0.2 × 1.2 × 10³P₁ = 0.24 x 10²P₁ = 24 atmNew volume
1.2×10⁴³So apply Boyles law
P1V1=P2V20.2(10)=P2(1.2×10⁴³)20=P2(1.2×10⁴³)P2=1.2×10⁴³/20P2=0.6×10⁴²P2=6×10⁴¹atmsolubility constant 5
For the dissolving of CaF2, the equilibrium constant expression, Ksp, is
Select one:
O Ksp = [Ca2+] [F]²
Ksp = [Ca2+] [F] / [CaF₂]
O Ksp = [Ca²+] [F]
O
Ksp = [Ca2+] [F]²/[CaF₂]
O
Ksp = [CaF₂] / ([Ca²+] [F] ²)
The Ksp of the compound CaF2 is given as; Ksp = [Ca2+] [F]²
What is solubility product?The term solubility product has to do with the extent to which a substance dissolves in solution.
For the compound CaF2, we have; CaF2(s) ⇆Ca^2+(aq) + 2F^-(aq). Hence, the Ksp of the solution is Ksp = [Ca2+] [F]²
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what is the effect of temperature and pressure on crystal structure ?
ty! :)
Answer:
Increase of pressure increases the coordination number during crystallization e.g. by applying pressure the NaCl type crystal structure having 6:6 coordination number changes to CsCl type crystal having coordination number 8:8.
welc!! you Σ=)
Why is electron configuration important
because it's provide insight into the chemical behaviour of elements by helping determine the valence electrons of an atom
that's my answer
A camel hump contains 12 kg of triacyclglycerols,
a) Given that there are 0.491 moles of ATP per gram of fat, how many moles of ATP could be produced by the fat in the camel hump?
______moles
b) If the hydrolysis of ATP releases 7.3 kcal/mole, how many kilocalories are produced by the utilization of the fat?
______kcal
The answer is 5892 moles of ATP will be produced from 12 kg of triacyclglycerols, and 43012 kcal energy will be generated by the utilization of the fat .
What are Triacyclglycerols ?Triacylglycerols are formed by linking fatty acids with an ester linkage to three alcohol groups in glycerol.
Triacylglycerols are the form in which fat energy is stored in adipose tissue.
A camel hump contains 12kg = 12000 gm of Triacyclglycerols
a) It is given that there are 0.491 moles of ATP per gram of fat ,
So for 12000 gm of fat in camel hump 12000 * 0.491 moles of ATP will be produced .
= 5892 moles
Therefore Answer is 5892 moles .
If Hydrolysis of ATP releases 7.3 kcal/mole
so 5892 moles will produce 5892 * 7.3 kcal
=43012 kcal energy will be generated by the utilization of the fat.
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What does it depend on ?
Answer: According to the molecular orbital theory the shape and size of molecular orbital depends upon- Shape and size of combining atomic orbitals.
Explanation:
Which best describes a difference between laser light and regular light? Laser light is less concentrated. Laser light has a beam that spreads out. Laser light is made of one specific color. Laser light pumps out light particles one at a time.
Answer:
Laser light is made of one specific color
Explanation:
Regular light is a mixture of electromagnetic waves of different wavelengths
Laser light is monochrome (one colour).
common laser colors are
red , green and violet
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Answer: C
Explanation: got it right on edge 2023
Which is it ? U think
Answer:
A
Explanation:
Took the test
At 27.0 °C a gas has a pressure of 6.00 atm. What will the pressure be at 150.0 °C?
10. Halothane is a popular inhalation anesthetic. It contains 12.15% carbon, 28.86%
fluorine. .506% hydrogen, 40.5% bromine, and 17.97% chlorine. What is the
empirical formula for this ssubstance?
Answer:
Halothane is a popular inhalation anesthetic. It contains 12.15% carbon, 28.86% fluorine, .506% hydrogen, 40.5% bromine, and 17.97% chlorine.
Explanation:
if a helium filled ballon has a volume of 3.4l at 25°c and 1.18atm., what is its volume at STP?
Answer:
3.711 L
Explanation:
The formula you need to use is the following:
[tex]\frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}\\[/tex]
3.4L / 298 K = V2 / 273 K
V2 = 3.711 L
Veins carry what type of blood from all the parts of the body back to the heart
Answer:
The veins (blue) take oxygen-poor blood back to the heart. Arteries begin with the aorta, the large artery leaving the heart. They carry oxygen-rich blood away from the heart to all of the body's tissues.
Explanation:
hope this helps
Answer:
Co^2 blood or the scientific way to say it oxygen-poor blood
Explanation:
A balloon contains 7.2 L of
He. The pressure is reduced
to 2.00 atm and the balloon
expands to occupy a volume
of 25.1 L. What was the initial
pressure exerted on the
balloon?
Given:
Unknown:
Formula:
Solution:
Final Answer:
Apply Boyles law
P1V1=P2V27.2(2)=25.1P214.4=25.1P_2P_2=0.57atmRemember
If Volume is four times increased pressure is 4 times decreased
How is light used in our daily activities?
Answer:
that is your answer hope this helps u
What is the molecular mass
In an aqueous solution all ions are present. Some of these ions will react, however, some will not. The ions that do not
react in solution are called
a. Inert ions
B. Spectator ions
C. Cations
d. Anions
Answer:
B. Spectator ions
Explanation:
Spectator ions are described as spectators literally because they "spectate", or, in other words, do not participate in the overall reaction. They may show up in the reaction equation, but they don't react themselves.
Thus, spectator ions stay unchanged throughout a reaction. We see many spectator ions in precipitation reactions. Remember that ionic compounds disassociate in solution.
For example, the reaction between silver nitrate [tex]AgNO_{3}[/tex] and sodium chloride [tex]NaCl[/tex] produces a solid precipitate of silver chloride [tex]AgCl[/tex] as represented by the equation below:
[tex]Ag^+_{(aq)} + NO^-_{3(aq)}+Na^+_{(aq)}+Cl^-_{(aq)}[/tex] -------> [tex]AgCl_{(s)}+Na^+_{(aq)}+NO_{3(aq)}^-[/tex]
However, the sodium and nitrate ions remained aqueous, like before, so they did not react. Thus, they are spectator ions.
what are three classes of levers? (science)
The three classes of lever include first, second and third class lever.
What are levers?Levers are simple type of machine that are used to transfer the force used to lift a load.
Examples of lever include the following:
First class lever: This is the type of lever where the fulcrum is between the load and the effort.Second class lever: This is the type of lever that has the load between the fulcrum and effort.Third class lever: This is the type of lever that has the effort between the fulcrum and the load.Therefore, the three classes of lever include first, second and third class lever.
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Drink mix compound what is the formula for drink mix compound
Answer:
Is drinks a compound or mixture?
Drinks are usually solutions of various substances dissolved in the water. Since the amount of each of these can vary (sugar, flavoring, color, carbonation), it’s a mixture. The components can be separated by various physical methods such as evaporation. Is smoke a compound or a mixture? Smoke is a mixture.
What is the ionic equation of a neutrilisation reaction?
Answer:
A salt is a neutral ionic compound. Let's see how a neutralization reaction produces both water and a salt, using as an example the reaction between solutions of hydrochloric acid and sodium hydroxide. The overall equation for this reaction is: NaOH + HCI → H2O and NaCl.
Explanation:
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[tex]\\ \orange{MaggieEve}[/tex]
What type of energy is being used by the roller coaster at each point? 8 9) 10) 11) 8) 9) 10) 11) A) Potential Energy A) Gaining Potential Energy A) Potential Energy A) Gaining Potential Energy B) Kinetic Energy B) Gaining Kinetic Energy B) Kinetic Energy B) Gaining Kinetic Energy
Answer:
Answers are below !
Explanation:
8) A) Potential Energy
9) B) Gaining Kinetic Energy
10) B) Kinetic Energy
11) A) Gaining Potential Energy
Most enzymes work best at 37C because at lower and higher temperatures, the conditions are not optimal for their performance. Explain in DETAIL what happens at low temperatures, optimal temperature and high temperatures with the molecular speed, energy and interactions. Be sure to explain what denaturation means.
That's because the solubility
Temperature is directly proportional to solubilityHigher the solubility higher the temperature
Lower the temperature lower the solubility
So
Less temperature makes enzymes work faster
smoking cigarettes is banned in petrol stations because of the risk of explosions.
Explain why Flames can cause explosions in petrol stations even if they never come into direct contact with any liquid petrol.
help pls!
Answer:
well it is because of mainly what we call reaction the petrol are highly reactive with the flames
Propane boils at -42C. Octane boils at 126C Which is a gas at the freezing point of water?
The substance which is a gas at the melting point of water is the gas propane.
What is freezing point?The term freezing point refers to the point at which a liquid turns to solid. It is often the temperature as the melting point.
Thus, the substance which is a gas at the melting point of water is the gas propane.
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most of the volume of an atom is occupied by ?
G. Empty space
Hope this helps!
Identify all of the ions that are
formed when H3PO4 ionizes in water
Answer:
H3PO4 + H2O (Phosphoric acid + Water)
Explanation:hope its help
Which of the following represents the quantity of heat required to raise the temperature of one gram of a substance by one degree Celsius?
A) Heat of reaction
B) Boiling point
C) Specific heat capacity
D) Thermochemical value
Answer:
C
Explanation:
The units of specific heat are usually calories or joules per gram per Celsius degree. For example, the specific heat of water is 1 calorie (or 4.186 joules) per gram per Celsius degree. The Scottish scientist Joseph Black, in the 18th century, noticed that equal masses of different substances needed different amounts of heat to raise them through the same temperature interval, and, from this observation, he founded the concept of specific heat. In the early 19th century the French physicists Pierre-Louis Dulong and Alexis-Thérèse Petit demonstrated that measurements of specific heats of substances allow calculation of their atomic weights (see Dulong-Petit law). See also heat capacity.
The statement that represents the quantity of heat required to raise the temperature of one gram of a substance by one degree Celsius is Specific heat capacity. The correct option is C.
What is Specific heat capacity?
When the temperature of a material rises 1 K (or 1 °C), the amount of heat (J) is absorbed per unit mass (kg). It is crucial since it will show how much energy will be needed to warm or cool an object of a certain mass by a certain amount.
The formula of specific heat capacity is [tex]Q=mc\Delta T[/tex] Where q is the specific heat, m is the mass and t is the change in temperature.
According to the definition, a material's specific heat capacity is normally calculated by calculating the heat capacity of an illustration of the substance, commonly using a calorimeter, and dividing by the sample's mass.
Thus, the correct option is C. Specific heat capacity.
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