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SIZIF [17.4K]
3 years ago
6

Steven had a sample of ethanol and wanted to see if it would boil at the temperature found in his textbook. His experiment yield

ed a temperature of 143.6oF but the literature value was 173.1oF. What is the percent error in this experiment?
Chemistry
1 answer:
Natasha_Volkova [10]3 years ago
4 0

Answer:

17.04%

Explanation:

Actual Value = 173.1

Measured Value = 143.6

Percent error is obtained using the equation;

Percent error = (Measured - Actual) / Actual ]* 100

Percent error = [ (143.6 - 173.1) / 173.1 ] * 100

The absolute value of (Measured - Actual) is taken,

Percent Error = [29.5 / 173.1 ] * 100

Percent Error = 0.1704 * 100 = 17.04%

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What is the definition of an atomic radius
chubhunter [2.5K]

Answer:

iIllustrated Glossary of Organic Chemistry - Atomic radius. Atomic radius: The radius of an atom. This distance between an atom's nucleus and outer electron shell. ... Atomic radius differs with the bonding state of an atom (for example an nonbonded atom of an element versus the same element within a covalent bond).

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3 years ago
Thermal energy is caused by the motion of?
Katarina [22]
Caused my motion energy or body heat when you move.
7 0
3 years ago
Read 2 more answers
A pinball bangs against a bumper, giving the ball a speed of 4. 5 m/s. If the ball has a mass of 50.0 g, what is the ball’s kine
Daniel [21]

Answer:

K.E =  0.5 j

Explanation:

Given data:

Mass of ball = 50 g (50/1000 =0.05 kg)

Speed of ball = 4.5 m/s

K.E of ball = ?

Solution:

Formula:

K.E = 1/2 m.v²

Now we will put the values in formula

K.E = 1/2 (0.05 kg) (4.5 m/s)²

K.E = 1/2 (0.05 kg) 20.25 m²/s²

K.E = 1/2 (1.0 kg. m²/s²)

K.E =  0.5 kg. m²/s²

j = kg. m²/s²

K.E =  0.5 j

6 0
3 years ago
What is the ratio of specific heat for carbon monoxide (co) at 625k?
Snowcat [4.5K]
The specific ratio is 1.40.
3 0
3 years ago
3) The amount of energy it takes to eject an electron from the surface of a metal is 4.15 x 10-19J. If light with a wavelength o
Triss [41]
We can use two equations to solve this.
(1) - E = hf
        E = Energy (J)
        h = plank's constant (6.63 × 10⁻³⁴ J s)
        f  = frequency (Hz)

(2) - v = fλ
        v = velocity of the wave (m/s)
       f  = frequency (Hz)
       λ = wavelength (m)

the λ for the given wave is 625nm (625 x 10⁻⁹ m) and the velocity of the wave is equal to speed of light (3 x 10⁸ m/s) since the wave is a light.

hence we can find the frequency of the wave by using (2) formula.
3 x 10⁸ m/s = f x 625 x 10⁻⁹ m
                f  = 4.8 x 10¹⁴ Hz

by using calculated frequency and (1) formula, we can find the energy of the wave.
 E = 6.63 × 10⁻³⁴ J s x 4.8 x 10¹⁴ Hz
 E = 3.18 x 10⁻¹⁹ J

The energy of wave is less than energy needed to eject an electron.
Hence, the metal does not eject electron.
4 0
3 years ago
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