Answers
To determine the order of a chemical reaction, you can plot the concentration of one of the reactants or products versus time and monitor the slope of the line. The slope of the line will be proportional to the rate of the reaction, and the exponent of concentration term in the rate law will be the order of the reaction.
If you have two plots of the decomposition of Br₂ as a function of time, you can choose order of the reaction by comparing the slopes of the lines. If slopes of lines are the same, then the reaction is first order. If slopes of lines are proportional to the concentrations of Br₂ to the power of 2, then the reaction is second order. If slopes of lines are proportional to the concentrations of Br₂ to the power of 3, then the reaction is third order.
To calculate rate constant, you will require to employ the rate law for the reaction. The general form of rate law is: rate = k[A]^m[B]^n...
To determine the rate constant, you will require to estimate the concentrations of the reactants and the rate of the reaction at different times and utilize the rate law to solve for "k". The rate of the reaction can be calculated by estimating the change in concentration of a reactant or product over a particular time interval.
Learn more about the order of reaction here:
https://brainly.com/question/28179168
#SPJ4
Related Questions
A ball is dropped from the top of a 93-m-high building. What speed does the ball have in falling 3.3 s?
Answers
Answer:
32.34 m/s
Explanation:
refer to the attachment
hope this helps
Which temperature is warmer than the freezing point of water?
O A. OK
O B. 33K
O C. 1°C
O D.O°F
Answers
The freezing point and melting point is 0 Degrees or 32 Degrees Fahrenheit
Answer:
C 1 degree
Explanation:
Which of the following does not support the idea of continental drift
A) seafloor spreading
B) magnetic reversals
C) Pangaea
D) Play tectonics
Answers
Answer:
B or D
Explanation:
What does the difference between gauge pressure and absolute pressure equal?
a.
the pressure within the fluid
c.
the pressure at the bottom of the fluid
b.
the pressure at the surface of the fluid
d.
zero
Answers
The actual difference between the guage pressure of a system and an absolute pressure is the same as the pressure at the surface of the fluid.
The correct answer choice is option b.
Why the pressure at fluid surface equals absolute and guage pressure.It follows that the two pressure system mentioned in the given task above has a zero point system as their principle of operation.
When we talk of guage pressure, it uses atmospheric pressure as its own zero point system. However, the sum of both the guage pressure and atmospheric pressure gives what we know as the absolute pressure.
So therefore, we can now deduced that the pressure on a liquid surface is equivalent to the variation between the gauge pressure and absolute pressure.
Read more on pressure:
https://brainly.com/question/441281
#SPJ1
A 4.24 kg marble slab has a volume of 1564 cm what is it’s density in g/cm?
Answers
Answer:
2.71 g/cm3
Explanation:
i got the answer on ck-12 wrong until it showed me the answer.
A 4.24 kg marble slab has a volume of 1564 cm³ then its density would be 2.7109 g/cm³.
What is density?
It can be defined as the mass of any object or body per unit volume of the particular object or body. Generally, it is expressed as in gram per cm³ or kilogram per meter³.
The density is the reciprocal of the specific volume of any substance.
The mathematical formula for density is given below
ρ =m /v
where ρ is the density of the substance
m is the mass of the substance
v is the volume of the substance
As for the given problem, a 4.24 kg marble slab has a volume of 1564 cm³.
By using the above formula for density
mass is 4.24 kg means 4240-gram
ρ =m /v
ρ = 4240/1564 gram/ cm³
ρ =2.71 g/cm³
Thus, for a 4.24 kg marble slab having a volume of 1564 cm³ then its density would be 2.7109 g/cm³.
learn more about density from here
https://brainly.com/question/15164682
#SPJ6
In hiking, what fitness component is required of you
Answers
Which refers to as the total kinetic and potential energy of all its particles?
Answers
Answer:
thermal energy
Explanation:
This is the definition of the thermal energy of a substance. It's the sum of the KE and PE of all its particles.
Evaluate each expression if x = 2, y = 7 and z = 123xy – 2z
Answers
ANSWER
\(18\)EXPLANATION
We want to evaluate the expressions for the given values of x, y, and z.
To do this, substitute the given values for the terms in the expressions.
The given expression is:
\(3xy-2z\)Therefore, we have that,
\(\begin{gathered} 3(2)(7)-2(12) \\ 42-24 \\ \Rightarrow18 \end{gathered}\)That is the answer.
What is the density of a 700 kg object with a volume of 649 m3
Answers
mass = 700
volume = 649
density = 700/649
density = 1.07
Hope this helps! I apologize if I’m incorrect
Very far from earth (at R- oo), a spacecraft has run out of fuel and its kinetic energy is zero. If only the gravitational force of the earth were to act on it (ie., neglect the forces from the sun and other solar system objects), the spacecraft would eventually crash into the earth The mass of the earth is Me and its radius is Re. Neglect air resistance throughout this problem, since the spacecraft is primarily moving through the near vacuum of space
Find the speed s of the spacecraft when it crashes into the earth Express the speed in terms of M, Re, and the universal gravitational constant G.
Answers
Answer:
Speed of the spacecraft right before the collision: \(\displaystyle \sqrt{\frac{2\, G\cdot M_\text{e}}{R\text{e}}}\).
Assumption: the earth is exactly spherical with a uniform density.
Explanation:
This question could be solved using the conservation of energy.
The mechanical energy of this spacecraft is the sum of:
the kinetic energy of this spacecraft, andthe (gravitational) potential energy of this spacecraft.Let \(m\) denote the mass of this spacecraft. At a distance of \(R\) from the center of the earth (with mass \(M_\text{e}\)), the gravitational potential energy (\(\mathrm{GPE}\)) of this spacecraft would be:
\(\displaystyle \text{GPE} = -\frac{G \cdot M_\text{e}\cdot m}{R}\).
Initially, \(R\) (the denominator of this fraction) is infinitely large. Therefore, the initial value of \(\mathrm{GPE}\) will be infinitely close to zero.
On the other hand, the question states that the initial kinetic energy (\(\rm KE\)) of this spacecraft is also zero. Therefore, the initial mechanical energy of this spacecraft would be zero.
Right before the collision, the spacecraft would be very close to the surface of the earth. The distance \(R\) between the spacecraft and the center of the earth would be approximately equal to \(R_\text{e}\), the radius of the earth.
The \(\mathrm{GPE}\) of the spacecraft at that moment would be:
\(\displaystyle \text{GPE} = -\frac{G \cdot M_\text{e}\cdot m}{R_\text{e}}\).
Subtract this value from zero to find the loss in the \(\rm GPE\) of this spacecraft:
\(\begin{aligned}\text{GPE change} &= \text{Initial GPE} - \text{Final GPE} \\ &= 0 - \left(-\frac{G \cdot M_\text{e}\cdot m}{R_\text{e}}\right) = \frac{G \cdot M_\text{e}\cdot m}{R_\text{e}} \end{aligned}\)
Assume that gravitational pull is the only force on the spacecraft. The size of the loss in the \(\rm GPE\) of this spacecraft would be equal to the size of the gain in its \(\rm KE\).
Therefore, right before collision, the \(\rm KE\) of this spacecraft would be:
\(\begin{aligned}& \text{Initial KE} + \text{KE change} \\ &= \text{Initial KE} + (-\text{GPE change}) \\ &= 0 + \frac{G \cdot M_\text{e}\cdot m}{R_\text{e}} \\ &= \frac{G \cdot M_\text{e}\cdot m}{R_\text{e}}\end{aligned}\).
On the other hand, let \(v\) denote the speed of this spacecraft. The following equation that relates \(v\!\) and \(m\) to \(\rm KE\):
\(\displaystyle \text{KE} = \frac{1}{2}\, m \cdot v^2\).
Rearrange this equation to find an equation for \(v\):
\(\displaystyle v = \sqrt{\frac{2\, \text{KE}}{m}}\).
It is already found that right before the collision, \(\displaystyle \text{KE} = \frac{G \cdot M_\text{e}\cdot m}{R_\text{e}}\). Make use of this equation to find \(v\) at that moment:
\(\begin{aligned}v &= \sqrt{\frac{2\, \text{KE}}{m}} \\ &= \sqrt{\frac{2\, G\cdot M_\text{e} \cdot m}{R_\text{e}\cdot m}} = \sqrt{\frac{2\, G\cdot M_\text{e}}{R_\text{e}}}\end{aligned}\).
150 ml
Water at 22 °C
Iron at
125 °C
What is a possible
temperature of the
system after the iron
has been added to
the beaker?
A. 147 °C
B. 52°C
C. 125 °C
D. 19 °C
Answers
The possible temperature of the system after the iron has been added to the beaker is 52°C.
option B.
What is equilibrium temperature?A system is said to be in thermal equilibrium when there is no temperature difference between system and surroundings. Temperature, as you know, measures how hot or cold a body is with respect to a standard object.
When a system ( cold and hot body) reaches thermal equilibrium or equilibrium temperature, the heat lost by the hot body will be equal to the heat gained by the cold body.
heat gained by the water = heat lost by the iron
The equilibrium temperature will be greater than the initial temperature of the cold body but less than the final temperature of the hot.
Thus, the only possible answer for the equilibrium temperature of mixture is 52⁰C.
Learn more about equilibrium temperature here: https://brainly.com/question/8925446
#SPJ1
Which law of thermodynamics does each of the following scenarios violate (if any)?
A machine that can turn 1000J of heat directly into 1000J of electricity
1.
The first law of thermodynamics
2.
The second law of thermodynamics
3.
The third law of thermodynamics
4.
It is allowed
Answers
Answer: The scenario violates the second law of thermodynamics.
Explanation: The second law states that heat cannot be converted into work without some loss of usable energy, and that the amount of usable energy in a closed system will always decrease over time. Therefore, the machine described in the scenario cannot exist because it would violate the second law by converting all of the heat into electricity without any loss of usable energy.
16. Two electric bulbs marked 100W 220V and 200W 200V have tungsten
filament of same length. Which of the two bulbs will have thicker
filament?
Answers
Answer:
The second bulb will have thicker filament
Explanation:
Given;
First electric bulb: Power, P₁ = 100 W and Voltage, V₁ = 220 V
Second electric bulb: Power, P₂ = 200 W and Voltage, V₂ = 200 V
Resistivity of tungsten, ρ = 4.9 x 10⁻⁸ ohm. m
Resistance of the first bulb:
\(P = IV = \frac{V}{R} .V = \frac{V^2}{R} \\\\R = \frac{V^2}{P} \\\\R_1 = \frac{V_1^2}{P_1} = \frac{(220)^2}{100} = 484 \ ohms\)
Resistance of the second bulb:
\(R_2 = \frac{V_2^2}{P_2} = \frac{(200)^2}{200} = 200 \ ohms\)
Resistivity of the tungsten filament is given by the following equation;
\(\rho = \frac{RA}{L}\)
where;
L is the length of the filament
R is resistance of each filament
A is area of each filament
\(A = \pi r^2\)
where;
r is the thickness of each filament
\(\rho = \frac{R (\pi r^2)}{L} \\\\\frac{\rho L}{\pi} = Rr^2 \\\\Recall ,\ \frac{\rho L}{\pi} \ is \ constant \ for \ both \ filaments\\\\R_1r_1^2 = R_2r_2^2\\\\(\frac{r_1}{r_2} )^2 = \frac{R_2}{R_1} \\\\\frac{r_1}{r_2} = \sqrt{\frac{R_2}{R_1} } \\\\\frac{r_1}{r_2} = \sqrt{\frac{200}{484} } \\\\\frac{r_1}{r_2} = 0.64\\\\r_1 = 0.64 \ r_2\\\\r_2 = 1.56 \ r_1\)
Therefore, the second bulb will have thicker filament
An atom has at least one positive proton and at least one negative electron. Which of the following is true about the protons and electrons in an atom? A. Protons and electrons are far apart with lots of empty space in between. B. Protons and electrons are stuck together in neutral pairs. C. Protons and electrons are mixed together in a cloud. D. Protons and electrons orbit close together around a central nucleus.
Answers
Answer:
A. True
B. False
C. False
D. False
Answer:
A
Explanation:
protons and electrons are far apart with lots of empty space in between.
explain why the insulting layer of fleece is good at reducing the rate of energy transfr
Answers
The insulating layer of fleece is effective at reducing the rate of energy transfer due to its unique properties and structure. Fleece is made of synthetic fibers or natural fibers such as wool, which have excellent insulating properties.
One key factor is the structure of fleece. Fleece fabric consists of many small air pockets trapped within the fibers. Air is a poor conductor of heat, so these air pockets act as a barrier to prevent the transfer of thermal energy. The trapped air creates a layer of insulation that helps to slow down the transfer of heat between the body and the environment.
Furthermore, fleece has a high loft, meaning it is thick and fluffy. The loft creates additional air space and increases the insulation capacity. The thickness of the fleece allows for more air to be trapped, providing a thicker barrier for heat transfer. The fibers themselves also have natural crimps and curls, which further enhance the insulation by creating more air pockets.
Additionally, fleece is hydrophobic, meaning it repels moisture. Moisture has a higher thermal conductivity than air, so by repelling moisture, fleece maintains its insulating properties even in damp conditions. This is particularly advantageous in outdoor activities or during physical exertion when the body may produce sweat.
know more about thermal energy here:
https://brainly.com/question/28944987
#SPJ8
I’ve tried my hardest n just keep blowing my head please help!!
Answers
Answer:
Forces
Explanation:
1) A Force
2) Balanced
3) Unbalanced
4) Any object moving at a constant speed, Any object in 0 motion, A balanced see-saw (no net torque/forces)
5) Any object accelerating, Someone pushing a box
m
1 N= 1 kg
m
82
Acceleration = m/s2
PLEASE HELP MEE ?!?!?
Answers
Explanation:
Force = mass × acceleration
force /acceleration =mass
20N /2ms^2=mass
Mass =10kg
Answer:
do you speak Spanish?? well I'll show you 1 Kg where the m is and s / ² are you going to take it where Mass m Kg they are giving you an acceleraton clue
Force varies directly with pressure. A force of 22,000 newtons acts on an object, causing 110 N/m² of pressure. The
force decreases to 18,000 newtons. What is the new amount of pressure caused by the force?
○ 45 N/m²
90 N/m²
O 75 N/m²
60 N/m²
Answers
The final amount of pressure caused by the force is 90 N/m².
Initial amount of force, F₁ = 22 x 10³ N
Initial amount of pressure produced, P₁ = 110 N/m²
Final amount of force exerted, F₂ = 18 x 10³ N
Pressure is defined as the amount of force acting on an object per unit area of the object.
So, we can say that the force and pressure are directly proportional.
F ∝ P
So, F₁/P₁ = F₂/P₂
Therefore, the final amount of pressure caused by the force is,
P₂ = F₂P₁/F₁
P₂ = 18 x 10³x 110/22 x 10³
P₂ = 18/0.2
P₂ = 90 N/m²
To learn more about pressure, click:
https://brainly.com/question/8033367
#SPJ1
assignment questions
Answers
Answer:
which on a is the question
the surface of a mirror is flat.
Answers
Answer:
plane on edge
Explanation:
1. At what displacement the kinetic energy and potential energy of a particle executing SHM will be equal when the amplitude is 3cm?
Answers
The displacement at which the kinetic energy and potential energy of a particle executing SHM will be equal when the amplitude is 3cm is 1.5cm.
How does the amplitude of simple harmonic motion affect the ratio of kinetic to potential energy at a specific displacement?The amplitude of simple harmonic motion affects the ratio of kinetic to potential energy at a specific displacement in the following way: as the amplitude increases, the ratio of kinetic to potential energy decreases. This is because the amplitude represents the maximum displacement from the equilibrium position, and as the amplitude increases, the potential energy of the particle increases, while the kinetic energy remains constant. Therefore, at a specific displacement, a particle with a larger amplitude will have a greater proportion of its energy in the form of potential energy, while a particle with a smaller amplitude will have a greater proportion of its energy in the form of kinetic energy.
To know more about Kinetic Energy visit: https://brainly.com/question/15764612
#SPJ1
Quia
Active
16:05:5
A plant root is an example of
Answers
Answer:A plant root is an example of an organ
Explanation:The main function of the root is to collect nutrients and water from the soil.
Answer:
hi sorry i just want points YOSHIII :3
Explanation:
I only need question 12 answered
Answers
A vector's length is considered to be its magnitude. A is used to represent the vector's magnitude.
A vector's magnitude can be determined in what ways?|v| =(x2 + y2) is the formula to calculate a vector's magnitude in two dimensions, where v = (x, y). From the Pythagorean theorem, this formula was obtained. In three-dimensional space, the formula to calculate a vector's magnitude is V = (x, y, z).A vector's length is considered to be its magnitude. A is used to represent the vector's magnitude. For more details on a vector's magnitude, see to its introduction. On this page, formulas for the magnitude of vectors in two and three dimensions in terms of their coordinates are developed.To learn more about vector's length refer to:
https://brainly.com/question/29186193
#SPJ1
The angle measured anticlockwise from the +x axis can be used to find vector components as well. In that instance, the x-component and y-component, respectively, will always be cos and sin.
How do you find the x and y components of a vector given velocity?The components of velocity v x=v cos and v y=v sin, where v is the magnitude of the velocity and is its direction in relation to the horizontal, have magnitudes of v x=v cos and v y=v respectively.Fill in a and b in the formula \(|v|=a_2+b_2 | v |=a_2 + b_2\) for a vector with the values a and b. Step 2: Underly the square root first, and then simplify the square root as much as you can, to simplify the magnitude\(|v|=a_2+b_2 | v |=a_2 + b_2\). Finding the horizontal component requires multiplying the vector's magnitude by the cosine of the vector's angle, and finding the vertical component requires multiplying the vector's magnitude by the sine of the vector's angle.To learn more about vector refer to :
https://brainly.com/question/356987
#SPJ1
explain why sound wave travel faster in liquid than gas
Answers
Answer:
Because gas contains free molecules but not liquid.
Please mark as brainliast
7. Which statement accurately describes the charge of the nucleus of an atom? (2 points)
O The nucleus can be either positively charged or neutral.
The nucleus never has an electrical charge.
The nucleus always has a positive charge.
The charge of a nucleus can change from positive to negative.
Answers
The nucleus never has a negative charge, and its charge cannot change from positive to negative.
The nucleus of an atom has a charge that can either be positively charged or neutral, as stated in the sentence. Positively charged protons and neutral neutrons make up the nucleus.
As a result, it can either be neutral or have a positive charge when there are an equal amount of protons and neutrons. The other claims made in the question are untrue. The charge of the nucleus is always positive and cannot ever become negative.
for more such questions on nucleus
https://brainly.com/question/29636698
#SPJ11
An electric iron is Mark 120 volts and 500 Watts to units consumed by it in using it for 24 hours will be
Answers
An electric iron is marked 120 volts and 500 Watts. The units consumed by it in using it for 24 hours can be calculated using the formula:Power (in watts) = Voltage (in volts) x Current (in amperes)P = V x I
Using the above formula, we can find the current drawn by the electric iron as follows:I = P/VI = 500/120I = 4.17 ATherefore, the power consumed by the electric iron in 24 hours is:P = VI x tP = 120 x 4.17 x 24P = 120 x 100.08P = 12010.56 watt-hoursTo convert watt-hours to kilowatt-hours, we divide by 1000: Energy consumed = 12010.56 / 1000Energy consumed = 12.01 kWhHence, the units consumed by the electric iron in 24 hours is 12.01 kilowatt-hours.For such more question on Voltage
https://brainly.com/question/14883923
#SPJ8
Some dragonflies splash down onto the surface of a lake to clean themselves. After this dunking, the dragonflies gain altitude, and then spin rapidly at about 1100 rpm to spray the water off their bodies. When the dragonflies do this "spin-dry," they tuck themselves into a "ball" with a moment of inertia of 2.0×10−7kg⋅m2 . How much energy must the dragonfly generate to spin itself at this rate?
Answers
The dragonfly must generate approximately 4.8 × 10^-4 Joules of energy to spin itself at a rate of 1100 rpm.
Start by converting the rotational speed from rpm (revolutions per minute) to rad/s (radians per second). Since 1 revolution is equal to 2π radians, we can use the conversion factor:
Angular speed (ω) = (1100 rpm) × (2π rad/1 min) × (1 min/60 s)
ω ≈ 115.28 rad/s
The moment of inertia (I) is given as 2.0 × 10^-7 kg⋅m².
Use the formula for rotational kinetic energy:
Rotational Kinetic Energy (KE_rot) = (1/2) I ω²
Substituting the given values:
KE_rot = (1/2) × (2.0 × 10^-7 kg⋅m²) × (115.28 rad/s)²
Calculate the value inside the parentheses:
KE_rot ≈ (1/2) × (2.0 × 10^-7 kg⋅m²) × (13274.28 rad²/s²)
KE_rot ≈ 1.331 × 10^-3 J
Round the result to the proper number of significant figures, which in this case is three, as indicated by the given moment of inertia.
KE_rot ≈ 4.8 × 10^-4 J
Therefore, the dragonfly must generate approximately 4.8 × 10^-4 Joules of energy to spin itself at a rate of 1100 rpm.
For more such questions on energy, click on:
https://brainly.com/question/8101588
#SPJ8
You made a peanut butter and jelly sandwich for lunch and ate it. What did your actions cause?
A. Caused a physical change when digesting the food
B. Caused a physical change when chewing the sandwich.
C. Caused a chemical change to the peanut butter and jelly.
O D. Performed a chemical reaction by mixing the peanut butter and jelly together.
Answers
Answer:
C
Explanation:
Chemical energy is in the food you eat and It fuels your body
Answer: B
Explanation:
When you chew it, you're changing the physical state it's in.
A lens is designed to work in the visible, near-infrared, and near-ultraviolet. The best resolution of this lens from a diffraction standpoint is A) The same for all wavelengths B) In the near-ultraviolet C) In the visible D) In the near-infrared E) Indeterminate
Answers
Answer:
B) In the near-ultraviolet
Explanation:
The best option to this problem is : In the near-ultraviolet
Light travels about 180 million kilometers in 10 minutes. How far does it travel in 1 minute? How far does it travel in 1 second? Show your reasoning
I need help
Answers
Explanation:
180 million km = 10 min
? = 1 min
180 million x 10 = 1,800,000,000 km
180 million km = 600s
? = l s
108,000,000,000km