Answers
Answer:
option a will be the answer.
Related Questions
Be sure to answer all parts. Butane gas is compressed and used as a liquid fuel in disposable cigarette lighters and lightweight camping stoves. Suppose a lighter contains 7.96 mL of butane (d = 0.579 g/mL). (a) How many grams of oxygen are needed to burn the butane completely?
Answers
Answer:
The correct answer will be "4.60 g".
Explanation:
The given values are:
Volume of Butane = 7.96 mL
Density = 0.579 g/mL
As we know,
⇒ \(Mass \ of \ Butane = Density\times Volume\)
On putting the estimated values, we get
⇒ \(=0.579\times 7.96\)
⇒ \(=4.60 \ g\)
Perform the following operation
and express the answer in
scientific notation.
Answers
Answer:
Coeficient: 70219691
Exponent: 0
Explanation:
3.687×10⁵ = 0.3687×10⁶
Then:
2.589 × 10⁶ ÷ 3.687 × 10⁵ = 2.589 × 10⁶ ÷ 0.3687 × 10⁶
= (2.589/0.3687) × (10⁶ / 10⁶)
= 7.0219691 × 1
= 7.0219691 × 10⁰
Note:
10⁰ = 1
A reflected wave will *
1 point
reflect at an angle equal to the incident angle
reflect at the angle of refraction
not reflect off a shiny surface
be absorbed by the surface it hits.
Answers
The following is an Arrhenius plot of a first-order reaction. The rate constant is measured in units of s–1.
If a catalyst is added to the reaction, which could correspond to an Arrhenius plot of the catalyzed reaction?
Answers
The plot that could correspond to an Arrhenius plot of the catalyzed reaction is plot C.
The correct option is C.
What is an Arrhenius plot of a catalyzed reaction?A catalyst is a material that speeds up a reaction while remaining chemically unaltered at its conclusion. You would have exactly the same mass of the catalyst at the end of the reaction as you did at the start.
In the Arrhenius plot of a catalyzed reaction, the graph that plots the inverse temperature (l/T) in Kelvin against the logarithmic rate of heat production (ln(q)). As a result, the graph for a single, non-autocatalyzed reaction is a straight line with a gradient of -Ea/R.
Learn more about catalyzed reactions at: https://brainly.com/question/1372992
#SPJ1
No links !! No spam !!
1. Which point defect in its crystal units alters the density of a solid?
Please answer
Answers
Schottky defects in its crystal units alters the density of a solid!
2. The water level rises from 15.35 mL to 22.76 mL when a 19.060 g marble is carefully placed into the water in a graduated cylinder . Calculate the density of the marble .
Answers
Answer:
2.57 g/mLExplanation:
The density of a substance can be found by using the formula
\(density = \frac{mass}{volume}\\\)
From the question we have
volume = final volume of water - initial volume of water
volume = 22.76 mL - 15.35 ml = 7.41 mL
\(density = \frac{19.060}{7.41} \\ = 2.572199\)
We have the final answer as
2.57 g/mLHope this helps you
A man lifts a television that weighs 75kg onto the bed of a truck that is 1.5 m high how much work has he done
Answers
The amount of work that has been done by the man would be =1,102.5Nm
How to calculate the amount of work done?To calculate the amount of work that was done by the man, the formula that should be used would be given below as follows:
Work done = Force × distance
But force = mass × acceleration
mass = 75kg
acceleration = 9.8m/s²
Force = 75×9.8 =735N
Work done = 735× 1.5 = 1,102.5Nm
Learn more about work done here:
https://brainly.com/question/28356414
#SPJ1
what r variable's :) :) :) :) :)
Answers
Answer: an element, feature, or factor that is liable to vary or change.
"there are too many variables involved to make any meaningful predictions"
Explanation:
Answer:
A variable is any characteristics, number, or quantity that can be measured or counted.
Explanation:
Why does the melting of the polar ice caps facilitate the absorption of CO2 by ocean waters?
Answers
hi brainly user! ૮₍ ˃ ⤙ ˂ ₎ა
⊱┈────────────────────────⊰
Answer:
The melting of the caps increases the concentration of CO2 in the water, making its absorption faster.
⊱┈────────────────────────⊰
Explanation:
CO2 absorptionThe polar caps of our planet have in their composition several elements, among them the CO2 that is absorbed by the atmosphere. Cold waters, which are present in the Arctic, have an easier time absorbing CO2 compared to other waters.
When glaciers melt, the CO2 that is present in the mixture is dissolved in the ocean, increasing its concentration. The cold waters that came from the ice caps increase the absorption of CO2.
Learn more about natural methods remove CO2 from the atmosphere in:
https://brainly.com/question/14323197
#SPJ2
Which statements best support the student’s claim? Select two of the five statements.
Answers
The statements that best support the student’s claim is that
The cells contains rigid structures that supports and protects plant cells.The cells contains structures that converts light energy to chemical energy.What is a cell?A cell is described as the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body.
A cell has three main parts which include :
the cell membrane, the nucleus, and the cytoplasm.The cell membrane surrounds the cell and controls the substances that go into and out of the cell.
In conclusion, Cells are the basic building blocks of all living things.
Learn more about cells at:
https://brainly.com/question/13920046
#SPJ1
Write the balanced NET IONIC equation for the reaction that occurs when ammonium bromide and sodium hydroxide are combined. This reaction is classified as fill in the blank 6 . A. Strong Acid Strong Base B. Weak Acid Strong Base C. Strong Acid Weak Base D. Weak Acid Weak Base The extent of this reaction is: fill in the blank 7 . A. ... Below 50% B. ... 50% C. ... Above 50% D. ... 100%
Answers
Answer:
c
Explanation:
What happens to the amount of solution when we add food colour to it?
Answers
Answer:
We need more? What else is in the question? This is unanswerable.
Explanation:
A story to describe the motion on the graph
Answers
An ionic bond results due to the __________________________ attraction between two oppositely charged ion.
Answers
Answer:
Electrostatic
Explanation:
An ionic bond results from the electrostatic attraction between oppositely charged ion.
Usually, metallic ion is positively charge and the non-metallic ion is negatively charged.
The attraction results in the formation of an ionic bond. Ionic bond forms by the transfer of electrons from a metal to a non - metal. The charge separation causes the oppositely charged atoms to be attracted to one another.a) What substances are present in an aqueous buffer composed of HC2H3O2 and C2H3O2 - ?b) What happens when LiOH is added to a buffer composed of HC2H3O2 and C2H3O2 - ? Write a chemical equation for that reaction.c) What happens when HBr is added to this buffer? Write a chemical equation for that reaction.
Answers
Answer:
a) HC₂H₃O₂, C₂H₃O₂⁻, H₃O⁺, H₂O, OH⁻
b) HC₂H₃O₂ + LiOH ⇄ H₂O + LiC₂H₃O₂
c) C₂H₃O₂⁻ + HBr ⇄ HC₂H₃O₂ + Br⁻
Explanation:
a) In a HC₂H₃O₂/C₂H₃O₂⁻ buffer system, the following reactions take place:
HC₂H₃O₂ + H₂O ⇄ C₂H₃O₂⁻ + H₃O⁺
C₂H₃O₂⁻ + H₂O ⇄ HC₂H₃O₂ + OH⁻
Thus, the species present are: HC₂H₃O₂, C₂H₃O₂⁻, H₃O⁺, H₂O, OH⁻.
b) When LiOH is added to the buffer system, it is partially neutralized according to the following equation.
HC₂H₃O₂ + LiOH ⇄ H₂O + LiC₂H₃O₂
c) When HBr is added to the buffer system, it is partially neutralized according to the following equation.
C₂H₃O₂⁻ + HBr ⇄ HC₂H₃O₂ + Br⁻
Classify the substances as atomic elements, molecular elements, molecular compounds, or ionic compounds.
Answers
Answer:
compounds ok I think I can't anderstand good
List the 2 pKa's for H2SO4
Answers
Abc Which excerpt from an essay about higher education most clearly shows an example of logos? According to recent studies, more women than ever are attending four-year colleges. In fact, 36.6 percent of women attended college in 2019, compared to 35.4 percent of men. O When I went to college in 1994, I was the first person in my family to do so. My mother stood in my dorm room, surrounded by boxes of clothes and trinkets and holding back tears. O I was in awe of my sociology professor, who had studied the historical impacts of food in African American culture for 10 years. She spoke with such passion and energy that it was difficult to take your eyes off her. O Many college students look to land an exciting internship, believing that it will open doors in their field of study. However, internships can often distract from schoolwork. Mark this and return Save and Exit Next Submit
Answers
The excerpt from an essay about higher education that most clearly shows an example of logos is:
Option d: Many college students look to land an exciting internship, believing that it will open doors in their field of study. However, internships can often distract from schoolwork.What is Logos?The Logos Definition is one that is often argued by a lot of people as people tends to appeal to others emotions and some other times, people do appeal to one's' ethics or morals.
The term logos is a term that connote the use of logic. It also includes the use of deductive reasoning to get to a conclusion.
The excerpt from an essay about higher education that most clearly shows an example of logos is:
Option d: Many college students look to land an exciting internship, believing that it will open doors in their field of study. However, internships can often distract from schoolwork.Option d is correct because it shows the cause and its effect.
Learn more about logos from
https://brainly.com/question/4656950
#SPJ1
How much ice in grams would have to melt to lower the temperature of 352 mL
of water from 15 ∘C
to 0 ∘C
? (Assume that the density of water is 1.0 g/mL
Answers
Answer:
66 grams of ice would have to melt to lower the temperature of 352 mL of water from 15 °C to 0 °C.
Explanation:
To calculate the amount of ice that would have to melt to lower the temperature of 352 mL of water from 15 °C to 0 °C, we need to use the formula:
Q = m_water * c_water * ΔT_water + m_ice * Lf
where,
Q = the amount of heat transferred,
m_water = the mass of water, c_water is the specific heat capacity of water,
ΔT_water = the change in temperature of water, m_ice = the mass of ice,
Lf = the specific latent heat of fusion of ice.
First, let's calculate the amount of heat transferred to the water:
Q = m_water * c_water * ΔT_water
Q = 352 g * 1.0 cal/(g*°C) * (15-0) °C
Q = 5,280 cal
Next, we can use the specific latent heat of fusion of ice, which is 80 cal/g, to calculate the amount of heat required to melt the ice:
Q = m_ice * Lf
Q = m_ice * 80 cal/g
m_ice = Q / Lf
m_ice = 5,280 cal / 80 cal/g
m_ice = 66 g
Balance each of the following equations according to the half-reaction method: (a) Zn(s)+NO3−(aq)⟶Zn2+(aq)+N2(g)(in acid) (b) Zn(s)+NO3−(aq)⟶Zn2+(aq)+NH3(aq)(in base) (c) CuS(s)+NO3−(aq)⟶Cu2+(aq)+S(s)+NO(g)(in acid) (d) NH3(aq)+O2(g)⟶NO2(g)(gas phase) (e) H2O2(aq)+MnO4−(aq)⟶Mn2+(aq)+O2(g)(in acid) (f) NO2(g)⟶NO3−(aq)+NO2−(aq)(in base) (g) Fe3+(aq)+I−(aq)⟶Fe2+(aq)+I2(aq)
Answers
The balanced equation of the redox reactions by the half-reaction method is as follows:
(a) Zn(s) + 4 H+(aq) + NO₃⁻(aq) ⟶ Zn²⁺ (aq) + 2 H₂O(l) + N₂(g)
(b) Zn(s) + 2 OH⁻(aq) + NO₃⁻(aq) ⟶ Zn(OH)₂(aq) + NH₃(aq)
(c) CuS(s) + 6 H⁺(aq) + 2 NO₃⁻(aq) ⟶ Cu²⁺(aq) + S(s) + 2 NO(g) + 3 H₂O(l)
(d) 4 NH₃(aq) + 5 O₂(g) ⟶ 4 NO₂(g) + 6 H₂O(l)
(e) 2 H₂O₂(aq) + 2 MnO₄⁻(aq) ⟶ 2 Mn²⁺(aq) + 5 O₂(g) + 4 H₂O(l)
(f) 3 NO₂ (g) + 2 OH⁻ (aq) ⟶ 3 NO₃⁻ (aq) + NO₂⁻ (aq) + H₂O(l)
(g) 2 Fe³⁺ (aq) + 2 I⁻ (aq) ⟶ 2 Fe²⁺ (aq) + I₂ (aq)
What are half-reactions in redox reactions?Half reactions refer to the separate reactions that represent the oxidation and reduction processes occurring in the overall redox reaction.
Considering the given redox reactions:
(a) Zn(s) + 4 H+(aq) + NO₃⁻(aq) ⟶ Zn²⁺ (aq) + 2 H₂O(l) + N₂(g)
Half-reaction (oxidation): Zn(s) ⟶ Zn²⁺(aq) + 2 e⁻
Half-reaction (reduction): 4 H+(aq) + NO₃⁻(aq) + 3 e⁻ ⟶ 2 H₂O(l) + N₂(g)
(b) Zn(s) + 2 OH⁻(aq) + NO₃⁻(aq) ⟶ Zn(OH)₂(aq) + NH₃(aq)
Half-reaction (oxidation): Zn(s) + 4 OH⁻(aq) ⟶ Zn(OH)₂(aq) + 2 e⁻
Half-reaction (reduction): NO₃⁻ aq) + 8 H₂O(l) + 6 e⁻ ⟶ NH₃(aq) + 9 OH⁻ (aq)
(c) CuS(s) + 6 H⁺(aq) + 2 NO₃⁻(aq) ⟶ Cu²⁺(aq) + S(s) + 2 NO(g) + 3 H₂O(l)
Half-reaction (oxidation): CuS(s) ⟶ Cu²(aq) + S(s) + 2 e⁻
Half-reaction (reduction): 6 H⁺(aq) + 2 NO₃⁻(aq) + 6 e⁻ ⟶ 2 NO(g) + 3 H₂O(l)
(d) 4 NH₃(aq) + 5 O₂(g) ⟶ 4 NO₂(g) + 6 H₂O(l)
Half-reaction (oxidation): 4 NH₃(aq) ⟶ 4 NO₂(g) + 8 H⁺(aq) + 8 e⁻
Half-reaction (reduction): 5 O₂(g) + 10 H₂O(l) + 10 e⁻ ⟶ 20 OH⁻(aq)
(e) 2 H₂O₂(aq) + 2 MnO₄⁻(aq) ⟶ 2 Mn²⁺(aq) + 5 O₂(g) + 4 H₂O(l)
Half-reaction (oxidation): 2 H₂O₂(aq) ⟶ 4 H⁺(aq) + 4 e⁻ + O₂(g)
Half-reaction (reduction): 2 MnO₄⁻(aq) + 16 H⁺ (aq) + 10 e⁻ ⟶ 2 Mn²⁺ (aq) + 8 H₂O (l)
(f) 3 NO₂ (g) + 2 OH⁻ (aq) ⟶ 3 NO₃⁻ (aq) + NO₂⁻ (aq) + H₂O(l)
Half-reaction (oxidation): 3 NO₂(g) + 6 OH⁻(aq) ⟶ 3 NO₃⁻ (aq) + 3 e⁻ + 3 H₂O(l)
Half-reaction (reduction): 3 NO₂ (g) + 2 e⁻ ⟶ 3 NO₂⁻ (aq)
(g) 2 Fe³⁺ (aq) + 2 I⁻ (aq) ⟶ 2 Fe²⁺ (aq) + I₂ (aq)
Half-reaction (oxidation): 2 Fe³⁺ (aq) ⟶ 2 Fe²⁺ (aq) + 2 e⁻
Half-reaction (reduction): 2 I⁻ (aq) ⟶ I₂ (aq) + 2 e⁻
Learn more about half-reactions at: https://brainly.com/question/26411933
#SPJ1
What is an indicator?
Answers
Hope it helps you!!
please help me it’s due today
Answers
Answer:
Opinion A is the right answerAnswer:
it's A
Hope this helps
amnabsbshdbxbsbsj
A 0.150 M solution chloride in water is best prepared ina) a volumetric pipetb) a volumetric flaskc) a beakerd) an Erlenmeyer flask
Answers
To prepare sich solution, we would have to have a good measure of the solution added and of the final volume.
We may use a volumetric pipet to prepare it, but we won't prepare in a pipet, we would use it to measure something we would add.
A beaker or an Erlenmeyer flask don't have a good precision for volume measure, so they are bad to prepare the solution.
So, the best is to prepare in a volumetric flask, because its volumetric meaures is very precise.
ch3cl would you expect the following compound to have a dipole moment? if the molecule has a dipole moment, specify its direction. select the single best answer. ch3cl the dipole moment is oriented from the h atoms towards the cl atom. the dipole moment is oriented from the cl atom towards the h atoms. one specific direction of the dipole moment does not exist. the molecule has no dipole moment. ch3cl
Answers
CH3Cl would have a dipole moment, oriented from the H atoms towards the Cl atom.
This is because the Cl atom is more electronegative than the H atoms, so the electrons in the covalent bond between them will be pulled more towards the Cl atom. This creates an uneven distribution of charge and a net dipole moment.
CH3Cl, also known as chloromethane or methyl chloride, is a colorless, flammable gas with a sweet odor. It is a hydrocarbon, meaning it consists of hydrogen and carbon atoms, and is classified as a haloalkane due to the presence of a chlorine atom. CH3Cl is used in a variety of industrial processes, including as a refrigerant and a propellant. It is also used to produce other compounds, such as acetic acid and methylene chloride.
Learn more about CH3Cl:
https://brainly.com/question/30265607
#SPJ4
Which phase change results in atoms with the highest kinetic energy? A. Boiling B. Melting C. Freezing D. Condensing
Answers
Answer: Boiling because it makes the molecules in water bounce around.
Hope it helps.
when electric current is applied externally, which of the following produces a redox reaction: A wood. B. electrolytic C. Solid
Answers
Answer:
the answer is a
Explanation:
What is photosynthesis? Answer in 2-4 sentences, including the words below:
Chemical Reaction
Energy
Answers
Photosynthesis is a chemical reaction in which energy from sunlight is used to convert carbon dioxide and water into glucose and oxygen. This process occurs in the chloroplasts of plant cells and is essential for the survival of plants, as well as for many other organisms that depend on plants for food.
Ammonium perchlorate is a powerful solid rocket fuel, used in the Space Shuttle boosters. It decomposes into nitrogen gas, chlorine gas, oxygen gas and water vapor, releasing a great deal of energy. Calculate the moles of ammonium perchlorate needed to produce .075mol of water.
Answers
Thus, in order to make 0.075 mol of water, 0.0375 moles or ammonium perchlorate are required.
How licit is ammonium perchlorate?Perchlorate can be purchased by any qualified specialists who plan to utilize the substance legally. Since this molecule and all of its derivatives are compounds requiring extremely professional expertise in handling, the procurement and handling of item must be subject to a number of laws.
What purposes does ammonium perchlorate serve?An odorless, white, dust powder known as ammonium perchlorate. As an etching and etching agent, it is employed in analytical chemistry. Moreover, it is utilized in explosives and for animal fattening. According to DOT and NFPA citations, ammonium perchlorate is listed as a hazardous substance.
To know more about ammonium perchlorate visit;
https://brainly.com/question/15124901
#SPJ1
Please help, its due today! I'll also make you brainiest (put them in an order that's simple, look at the picture and you'll see what I mean) Thank you and God bless! <33
On beaches there are often areas of grassy dunes where people are prohibited from walking. How do these protected areas preserve ecosystem services? Use the graphic organizer to categorize the following as either examples of land reclamation of protecting biodiversity.
Answers
Answer:
Preventing erosion – Land Reclamation
Protecting nesting areas – Protecting Biodiversity
Preventing littering – Land Reclamation
Preventing habitat disruption – Protecting Biodiversity
Protecting native species – Protecting Biodiversity
Preventing contamination of soil – Land Reclamation
Explanation:
I really hope I'm right! I tried my hardest, please give me brainliest :)
have a good day!
Heart, 5 stars, Brainiest, and 40 coins if right! Answer needed ASAP
Which statement describes what happens when Bret runs up a flight of stairs?
A. His kinetic energy is destroyed.
B. His potential energy decreases.
C. His kinetic energy is converted into potential energy.
D. His potential energy is converted into kinetic energy.
Answers
Answer:
His kinetic energy is converted into potential energy.
Explanation: