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3 years ago

What did Robert Millikan's oil drop experiment prove?

Chemistry

2 answers:

joja [24]3 years ago

7 0

Answer:

Robert Millikan was a well known experimental physicist. Robert Millikan's oil drop experiment proved that it determined the actual mass of the electron.

creativ13 [48]3 years ago

6 0

Robert Millikan's oil drop experiment proved that it determined the actual mass of the electron. Robert Millikan was a well known experimental physicist.

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Which of the following would you predict to have a positive value for º?

Artemon [7]

<span>AgCl(s) → Ag+(aq) + Cl-(aq) That would be my best guess</span>

3 0

3 years ago

The water bottle contains 575 grams of water at 80°C. The water eventually cools to

Jet001 [13]

Answer:

–23000 Calories.

NOTE : The negative sign indicates that heat has been loss to the student back.

Explanation:

The following data were obtained from the question:

Mass (M) of water = 575 g

Initial temperature (T1) = 80 °C

Final temperature (T2) = 40 °C

Heat (Q) transferred =.?

Next, we shall determine the change in temperature (ΔT).

This is illustrated below:

Initial temperature (T1) = 80 °C

Final temperature (T2) = 40 °C

Change in temperature (ΔT) =?

Change in temperature (ΔT) = T2 – T1

Change in temperature (ΔT) = 40 – 80

Change in temperature (ΔT) = –40°C

Finally, we shall determine the heat transferred. This can be obtained as follow:

Mass (M) of water = 575 g

Change in temperature (ΔT) = –40°C

Specific heat capacity (C) of water = 1 Cal/g°C

Heat (Q) transferred =.?

Q = MCΔT

Q = 575 × 1 × –40

Q = –23000 Calories

NOTE : The negative sign indicates that heat has been loss to the student back.

8 0

3 years ago

The density (g/L) of CO2 gas at STP ( 273 K, 1.00 atm) is

Triss [41]

The density : 1.96 g/L

<h3>Further explanation</h3>

Ideal gas Law

Pv=nRT

where

P = pressure, atm , N/m²

V = volume, liter

n = number of moles

R = gas constant = 0.082 l.atm / mol K (P= atm, v= liter),or 8,314 J/mol K (P=Pa or N/m², v= m³)

T = temperature, Kelvin

so for density,

MW CO₂ = 44 g/mol

$\tt \rho=\dfrac{P\times MW}{RT}\\\\\rho=\dfrac{1\times 44}{0.082\times 273}\\\\\rho=1.96~g/L$

3 0

2 years ago

1) Alarge doud of dust and gas spread out in a large area is

alexdok [17]

Answer:

D. nebula

Explanation:

Hope this helps

8 0

2 years ago

How do ethical concerns affect scientific research

Gwar [14]

Answer:

Ethical concerns affect scientific research by adding boundaries to what can and cant be experimented on. An example is that its socially unacceptable to experiment on humans because its considered wrong and horrific, even at the expense of learning more about human nature and/or the human body.

7 0

3 years ago