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arlik [135]
3 years ago
10

A scientist is studying a sample of water and a sample of an unknown liquid. Both samples have the same mass. The scientist had

to add more heat to the unknown liquid to raise its temperature by 1°C than she did to the water to raise its temperature by 1°C. Which of these statements about the liquids is most likely true? (1 points) The unknown liquid has a higher specific heat than water. The unknown liquid has a lower specific heat than water. The unknown liquid has the same specific heat as water, but is made of larger molecules. The unknown liquid has the same specific heat as water, but is made of smaller molecules.
Physics
1 answer:
MrRa [10]3 years ago
7 0

The unknown liquid has a lower specific heat than water.

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<u><em /></u>

Explanation:So, if the wavelength of a light wave is shorter, that means that the frequency will be higher because one cycle can pass in a shorter amount of time. ... That means that longer wavelengths have a lower frequency. Conclusion: a longer wavelength means a lower frequency, and a shorter wavelength means a higher frequency!

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3 years ago
If an astronaut has a mass of 80kg on earth, what is their mass on the moon?
stealth61 [152]

Answer:

130 N basically

Explanation:

6 0
3 years ago
An artillery shell of mass 30 kg has a velocity of 250 m/s vertically upward. The shell explodes into two pieces; immediately af
olga_2 [115]

Answer:

9654.34 m

Explanation:

from conservation of momentum

$$\begin{aligned}30 \times 250 &=-10 \times 120+20 \times V \\20 V &=30 \times 250+10 * 120 \\V &=\frac{30 \times 250+10 \times 120}{20}=435 \mathrm{~m} / \mathrm{s}\end{aligned}$$

And from Conservation of Energy

\frac{1}{2} m v^{2}=m g h\\h=\frac{v^{2}}{2 g}\\h=\frac{(435(m/s))^{2}}{2 \times 9.8(m/s^{2} )}\\h=9654.34 (m)

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A polycondensation reaction takes place between 1.2 moles of a dicarboxylic acid, 0.4 moles of glycerol (a triol) and 0.6 moles
katrin2010 [14]

Answer:

A) i) using statistical theory of floxy

(Pa)c = 0.816

(Pb)c = 0.816

ii) using Carothers theory

( Pc ) = 0.917

B) To Obtain the measured value of critical extent of reaction ( 0.866) 1 mol of Glycerol  will react with 1 mol of dicarboxylic acid, but the same can not be applied to our obtained value because our stoichiometry is different

Explanation:

Given data :

Polycondensation reaction takes place between : 1.2 moles of dicarboxylic acid , 0.4 moles of glycerol and 0.6 moles of ethylene glycol

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i) using statistical theory of floxy

(Pa)c = 0.816

(Pb)c = 0.816

ii) using Carothers theory

( Pc ) = 0.917

attached below is the detailed solution

B) To Obtain the measured value of critical extent of reaction ( 0.866) 1 mol of Glycerol  will react with 1 mol of dicarboxylic acid, but the same can not be applied to our obtained value because our stoichiometry is different

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3 years ago
What is the frequency of a wave that has a wavelength of 20 cm and a speed of 10 m/s?
Inga [223]
Frequency = velocity/wavelength

Frequency = 10/20

Frequency = 0.5 Hz
3 0
3 years ago
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