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zysi [14]
3 years ago
7

Gunther needs a 75% concentrated solution. When making his solution at room temperature, he could only make a solution that was

70% before the solute settled out.
What could he do to make his solution reach 75%?




Put the solution in an ice bath, dissolve the solute, and let it return to room temperature.

Heat the solution, dissolve the solute, and let it cool verifying nothing settled out.

Add more water, boil the solution, and dissolve the solute until the some of the water evaporates.

Keep the solution at room temperature, add more water, and dissolve the excess solute.
Physics
2 answers:
jolli1 [7]3 years ago
7 0

Answer:

Heat the solution, dissolve the solute, and let it cool verifying nothing settled out.  

Explanation:

Gwar [14]3 years ago
7 0

Answer:

B. Heat the solution, dissolve the solute, and let it cool verifying nothing settled out.

Explanation:

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Which event in the “The Medicine Bag” is most symbolic of Martin beginning to connect with his Sioux heritage?
Sophie [7]

Answer:

A- Martin brings his friends home to meet grandpa.

Explanation:

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6 0
3 years ago
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A solenoid has a radius Rs = 14.0 cm, length L = 3.50 m, and Ns = 6500 turns. The current in the solenoid decreases at the rate
babymother [125]

Answer:

E = 58.7 V/m

Explanation:

As we know that flux linked with the coil is given as

\phi = NBA

here we have

A = \pi R_s^2

B = \mu_o N i/L

now we have

\phi = N(\mu_o N i/L)(\pi R_s^2)

now the induced EMF is rate of change in magnetic flux

EMF = \frac{d\phi}{dt} = \mu_o N^2 \pi R_s^2 \frac{di}{dt}/L

now for induced electric field in the coil is linked with the EMF as

\int E. dL = EMF

E(2\pi r_c) = \mu_o N^2 \pi R_s^2 \frac{di}{dt}/L

E = \frac{\mu_o N^2 R_s^2 \frac{di}{dt}}{2 r_c L}

E = \frac{(4\pi \times 10^{-7})(6500^2)(0.14^2)(79)}{2(0.20)(3.50)}

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3 0
3 years ago
An ice skater has a moment of inertia of 5.0 kgm2 when her arms are outstretched. at this time she is spinning at 3.0 revolution
givi [52]
With arms outstretched,
Moment of inertia is I = 5.0 kg-m².
Rotational speed is ω = (3 rev/s)*(2π rad/rev) = 6π rad/s
The torque required is
T = Iω = (5.0 kg-m²)*(6π rad/s) = 30π 

Assume that the same torque drives the rotational motion at a moment of inertia of 2.0 kg-m².
If u = new rotational speed (rad/s), then
T = 2u = 30π
u = 15π rad/s
   = (15π rad/s)*(1 rev/2π rad)
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Answer: 7.5  revolutions per second.

7 0
4 years ago
A plane travels 2.5 KM at an angle of 35 degrees to the ground, then changes direction and travels 5.2 km at an angle of 22 degr
Solnce55 [7]

Answer:

7.7 km 26°

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The total x component is:

x = 2.5 cos(35°) + 5.2 cos(22°) = 6.87

The total y component is:

y = 2.5 sin(35°) + 5.2 sin(22°) = 3.38

The magnitude is:

d = √(x² + y²)

d = 7.7 km

The direction is:

θ = atan(y/x)

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5 0
3 years ago
2+2 can someone plz tell me the pros and cons of ending life right here and now?
kari74 [83]
2+2=4, thx for the pts
8 0
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