An analytical chemist is titrating of a solution of propylamine with a solution of . the of propylamine is . calculate the ph of the base solution after the chemist has added of the solution to it.

25 kg in khan……………………………………

Each bucket of concrete has a mass of 10,562 kg, rounded to two significant figures.

To determine the mass of each bucket of concrete, we need to use the formula for gravitational force:
\(F = G(m1m2)/r^2\)
Where F is the force, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between them.
We know the force and distance between the two buckets, and the gravitational constant is a constant value. So, we can rearrange the formula to solve for the mass of each bucket:
\(m = Fr^2/(Gm1)\)
Plugging in the given values, we get:
m = \((1.378 * 10^{-13} N)(550 m)^2/(6.674 * 10^{-11} N(m/kg)^2 m1)\)Simplifying this equation, we get:
m1 = \((1.378 * 10^{-13} N)(550 m)^2/(6.674 * 10^{-11} N(m/kg)^2)(2)\)
m1 = 10,562 kg

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The point is located 9.1 m far from the axis of rotation of the second hand.

Radial acceleration occurs when the force applied to an object is radial, and according to Newton’s Second law of Newton’s acceleration none on a particular object’s velocity over time. It also includes the vector quantity, which refers to both the magnitude and direction of the force.

The point from the axis of rotation of the second hand is the radius of the rotation of the clock.

a = v²/r

v² = ar

v = √ar

V = 2πr/ T

√ar = 2πr/ T

ar = 4π²r²/T²

a = 4π²r/T²

r = aT²/4π²

r = 0.41 × 60²/4π²

r = 9.1 m

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Answer:

[Ne] 3s² 3p¹

Explanation:

Answer: 1s2 2s2 2p6

Explanation:

The aluminum ground state would be 1s2 2s2 2p6 3s2 3p1.

However, the Aluminum Ion electron configuration would be 1s2 2s2 2p6 as it has LOST 3 electrons to have the noble gas configuration of Neon (Ne)

Answer:

Opposite

Explanation:

Newton's third law of motion states that for every action there is an equal but opposite reaction.

Action-reaction force pairs make it possible for fishes to swim, birds to fly, cars to move etc,

For example, while driving down the road, a firefly strikes the windshield of a car (Action) and makes a quite obvious mess in front of the face of the driver (Reaction) i.e the firefly hit the car and the car hits the firefly.

The ultimately implies that, in every interaction, there is a pair of equal but opposite forces acting on the two interacting physical objects.

Hence, whenever any physical object exerts a force (action) on another physical object, the second physical object exerts a force (reaction) of the same amount, but acting in opposite direction to that of the first physical object.

Answer:

C. Exothermic Reaction

Explanation:

Let's go through the choices

A. Combustion - Combustion is a highly exothermic / redox reaction which produces light and heat (i.e basically it bursts into flames). In the description, the only reaction is that it feels warm, hence this is not the answer.

B. Endothermic - Recall that endothermic reactions absorbs heat and thus cools the surroundings thereby making test tube feel cooler. this is obviously not the case so this is not the answer.

C. Exothermic - Recall that exothermic reactions releases heat and thus causes the surroundings thereby making the test tube feel warmer (or hotter in some cases). This describes our situation so THIS IS THE ANSWER.

D. Endergonic reactions require an input of energy from an external source that is adsorbed by the reaction (for example if heat was applied by an external source). In this case, there is no mention of additional energy sources. Hence this is probably not the answer.

Answer:

Since you are asking for magnitude only, 12.6 units is the resultant. If you were looking for the full answer, 12.6 units North would be your answer

Explanation:

There there are 2 forces acting in the north direction add them up 5.4+9.3

this equals 14.7 since there is also something acting in the opposite direction, subtract that from the  total of the previous two, 14.7-2.1,

and your final answer will be 12.6 units

Explanation: divided

The position of the jogger after 10 seconds will be 40 meters.

Velocity is defined as the ratio of the distance moved by the object at a particular time. The velocity is a vector quantity so it needs both the magnitude and the direction. The unit of velocity is measured in the meter per second, miles per hour, etc.

Given that a jogger travels west and passes a point that is 52 m west of a reference point. If the jogger travels at an average velocity of 4.0 m/s, the jogger's new position is 10.0s later. will be calculated as below:-

To calculate the distance traveled by the object convert the velocity formula into the form of the distance formula then solve for the value of distance.

Velocity = Distance / time

4 = Distance / 10

Distance = 4 x 10 = 40 meters

Therefore, the position of the jogger after 10 seconds will be 40 meters.

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Answer:

The initial velocity of the ball is +38.0 m/s. The final velocity is -27.0 m/s.  

momentum = mass x velocity

(mass x final velocity) – (mass x initial velocity)

(1.5)(-27) – (1.5)(38) = -97.5

The impulse applied to the ball is -97.5 kg m/s

impulse = force x time interval

force = impulse/time interval

-97.5/0.45 s = - 216.6  

The force applied was 216.6 N.

Answer: 28.699

Explanation:

KE=1/2(mv²)

1800=1/2m (125.44)

14.349=2m

m=28.699

Answer:

28.699

Explanation:

The length of the guitar string required to produce a fundamental frequency of 256 Hz is approximately 0.79 meters.

To determine the length of the guitar string required to produce a fundamental frequency of 256 Hz, we need to use the formula for the speed of waves in a string:

v = fλ

Where v is the speed of waves in the string, f is the frequency, and λ is the wavelength.

We know that the speed of waves in the particular guitar string is 405 m/s and we want to produce a fundamental frequency of 256 Hz. To find the wavelength, we rearrange the formula as:

λ = v/f

λ = 405/256

λ = 1.58 m

Now that we know the wavelength, we can find the length of the string required to produce this frequency using the formula:

L = n(λ/2)

Where L is the length of the string, n is the number of half-wavelengths that fit in the string, and λ is the wavelength.

Since we want to produce the fundamental frequency (1st harmonic), n = 1. Therefore:

L = (1)(1.58/2)

L = 0.79 m

So, the length of the guitar string required is approximately 0.79 meters.

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Answer:

So this means an increase in either will decrease the other factor like density is mass per unit volume and it's also difficult to calculate with only altitude of 1,291 kilometers that's given.

Explanation:

Answer: C for all of them

Explanation:

Because I'm smart

Jk

So basically its beacuse all of them have the same mixture since science can be interrelated and interchangebale in terms of formulas ok bye now

Thanks

Hope this helped you

Or not

Sorry if it didn't ig

Answer:

reduce your risk of a heart attack.

manage your weight better.

have a lower blood cholesterol level.

lower the risk of type 2 diabetes and some cancers.

have lower blood pressure.

have stronger bones, muscles and joints and lower risk of developing osteoporosis.

Answer:

many for a hour. I don't know how much I did this week

Explanation:

My goal was to do jogging every morning for around one hour for starters. I felt release of endorphins and I gained lots of positive energy. Organizations tell that it's good to do exercise for 60 minutes and take 1200 steps at least.

Hope this helps

After catching the ball, the boy and skateboard will be moving with a speed of approximately 0.44 m/s.

According to the principle of conservation of momentum, the total momentum before and after an interaction remains constant if no external forces act on the system. In this case, the initial momentum of the ball is equal to the final momentum of the boy and skateboard system.

The initial momentum of the ball can be calculated as the product of its mass (2.0 kg) and velocity (12 m/s), which is 24 kg·m/s.

Since the boy and skateboard are initially at rest, their combined initial momentum is zero.

After catching the ball, the total momentum of the system is still 24 kg·m/s. This momentum is shared between the boy, skateboard, and the ball.

To find the final velocity of the boy and skateboard, we can divide the total momentum by their combined mass: 24 kg·m/s / 55 kg = 0.4364 m/s = 0.44 m/s.

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The units of Planck's constant are Joule seconds (J*s).

Planck's constant is a fundamental physical constant that plays a crucial role in quantum mechanics. It relates the energy of a photon to its frequency through the equation E = hf, where E is the energy, h is Planck's constant, and f is the frequency. The unit of energy is Joules (J), and the unit of frequency is Hertz (Hz), so the unit of Planck's constant is J*s.

The significance of Planck's constant lies in its ability to bridge the gap between classical physics and quantum mechanics. It helps explain phenomena such as wave-particle duality, where particles can behave as waves and vice versa. Additionally, it is used in calculations related to atomic and subatomic particles, including the energy levels of electrons in atoms and the behavior of photons in lasers.

Overall, the units of Planck's constant demonstrate its importance as a fundamental constant in the field of quantum mechanics and its role in bridging the gap between classical physics and the mysterious realm of the subatomic world.

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The coefficients in order are 2, 1, 1

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products.

In other words, the mass and the charge are balanced on both sides of the reaction.

According to the given situation,

To balance the the chemical equation,

Step 1 - Add a 2 on the Na2HPO4:

2(Na₂HPO₄)  ⇒ Na4P₂O₇ + H₂O

Step 2 -Next take count of each element on both sides to see if the 2 is balanced or not:

On the left there are 4 Na, 2 H, 2 P, and 8 O

On the right there are 4 Na, 2 H, 2 P, and 8 O

Step 3 - Now we will divide by 2

i.e. 2 NA.H. P

The coefficient of  Na is 2 , Coefficient of H is 1 and Coefficient of P is 1

Therefore,

The coefficients in order are 2, 1, 1.

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The magnitude of the electric field between the plates when there is a layer of dust is higher than when there is no layer of dust. The resistances are in seriesThe gas in the precipitator behaves in a highly non-Ohmic manner. The current is proportional to the third power of the electric field.

The effective resistance of the gas depends strongly on the applied field. After a layer of dust has accumulated on the ground plate, the effective resistance of the gas is increasing. Once a layer of dust has accumulated, the effective resistance rises to a high level. This increase in resistance is due to the layer of dust between the plates.The magnitude of the electric field between the plates when there is a layer of dustThe magnitude of the electric field between the plates when there is a layer of dust is higher than when there is no layer of dust.

The reason for this is that the resistance of the gas in the precipitator is higher when there is a layer of dust. This means that the potential difference between the plates must be increased to maintain the same current. The electric field between the plates is proportional to the potential difference between the plates divided by the distance between the plates. In series, the resistances add together. Therefore, the effective resistance of the gas in the precipitator is the sum of the resistance of the gas and the resistance of the layer of dust.

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Answer:

Below

Explanation:

Power = I^2 R

 30.0 = i^2 * 480

30/480 = I^2

I = .25 Amps

Answer:

KE = 1/2 mv2

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s)

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402)

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402) KE = 0.5 x 0.50 x 402

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402) KE = 0.5 x 0.50 x 402 KE = 400 J

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402) KE = 0.5 x 0.50 x 402 KE = 400 JKE = 0.4 KJ

Answer:

K. E = 1/2MV²

K. E = 1/2 x 0.50kg x (40m/s)²

K. E = 1/4kg x 1600m²/s²

K. E = 400

Answer:

6kg ise yes...............

\(\\ \rm\Rrightarrow m1v1+m2v2=(m1+m2)v_3\)

\(\\ \rm\Rrightarrow 4(10)+6(0)=(6+4)V3\)

\(\\ \rm\Rrightarrow 40=10v3\)

\(\\ \rm\Rrightarrow V3=4m/s\)

Answer:

2nd one if you ask me

almost every baby stats to talk after their a year old

In order to find how many centimeters are in 15 kilometers, we can use the following conversion rate:

1 km = 100,000 cm.

So, for 15 kilometers, we have:

Therefore the correct option is C.

The combination of the 1.0-µF and 2.0-µF capacitors would store a total charge of 18 µC when connected across a 6.0-V potential source. The total capacitance in this case would be the sum of the individual capacitances, which is 3.0 µF (1.0 µF + 2.0 µF).

When a 1.0-µF capacitor and a 2.0-µF capacitor are connected in parallel, they are effectively combined into a single equivalent capacitor. The total capacitance in this case would be the sum of the individual capacitances, which is 3.0 µF (1.0 µF + 2.0 µF).
When this combination is connected across a 6.0-V potential source (battery), the capacitors will charge up to the potential difference of the source. Capacitors store electrical energy in the form of charge on their plates. The charge on a capacitor is given by the equation Q = CV, where Q is the charge, C is the capacitance, and V is the potential difference across the capacitor.
In this case, with a 3.0-µF equivalent capacitor and a 6.0-V potential source, we can calculate the charge stored on the capacitors.
Q = (3.0 µF)(6.0 V) = 18 µC (microcoulombs)
So, the total charge stored on the capacitors would be 18 µC.
It's important to note that while the potential difference across each capacitor is the same (6.0 V), the actual charge stored on each capacitor depends on its individual capacitance value. In this case, the 1.0-µF capacitor would store 6.0 µC (1.0 µF x 6.0 V) and the 2.0-µF capacitor would store 12.0 µC (2.0 µF x 6.0 V).
Overall, the combination of the 1.0-µF and 2.0-µF capacitors would store a total charge of 18 µC when connected across a 6.0-V potential source.

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Answer:

chemical energy, Energy stored in the bonds of chemical compounds. Chemical energy may be released during a chemical reaction, often in the form of heat; such reactions are called exothermic

Explanation:

hope it will help you

Answer:

So, the frequency of the sine wave is 25 Hz

Explanation:

Answer:

the magnitude of the car's acceleration is 0.2333 m/s^2.

Explanation:

To find the magnitude of the car's acceleration, we can use the formula:

a = F/m

where a is the acceleration, F is the net force acting on the car, and m is the mass of the car.

In this problem, F = 10.5 N and m = 45 kg. Substituting these values into the formula, we get:

a = 10.5 N / 45 kg

a = 0.2333 m/s^2

Therefore, the magnitude of the car's acceleration is 0.2333 m/s^2.

Answer:

Nucleus :)

Explanation:

An electron will only react with a proton in the nucleus via electron capture if there are too many protons in the nucleus.

I also learned this in freshman year in high school for biology.

Answer:

Nucleus

Explanation:

The Heisenberg Uncertainty Principle explains why electrons do not fall into the nucleus of an atom. The principle specially states that the product of the uncertainty of position and the uncertainty of momentum is greater than or equal to Planck's reduced constant divided by two.