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Arturiano [62]
1 year ago
6

Mr. Soto was trying to explain how electrons move around the nucleus of an atom in circular orbits. Which analogy BEST represent

s this concept?
A) Earth spins on its axis.
B) The planets go around the sun.
Eliminate
C) Particles of dust move around in random order.
D) A ball starts moving when another ball hits it.
Chemistry
2 answers:
Kruka [31]1 year ago
7 0

Answer:

B) The planets go around the sun.

Explanation:

Electrons go around or orbit the nucleus of the atom. This is analogous to the planets going around the sun.

deff fn [24]1 year ago
6 0

Answer:

The analogy that best describes is "The planets go around the sun."

Explanation:

The best analogy that suggests that electrons moves round the nucleus in an atom is the Bohr model.  According to Neil Bohr, Based on Rutherford's model, he suggested that the extra nuclear part consists of electrons. These electrons are in the spherical orbits called shells or energy levels around the nucleus. The nucleus is the tiny massive center of the atom. Transition of electrons takes place from one level to another.

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Use the specific heat capacity that you calculated for granite to determine how many grams of granite at the initial temperature
Valentin [98]

Answer:

Explanation:

specific heat of granite s = .79 J / g / k

let the mass of granite = m

heat lost by granite = heat gained by water

heat lost = mass x specific heat x drop in temperature

= m x .79 x (80 - 20.45)

heat gained by water

= 3000 x 4.186 x (20.45- 20)

heat lost by granite = heat gained by water

m x .79 x 59.55  =  3000 x 4.186 x .45

m = 120.12 g .

4 0
2 years ago
The solubility of N2 in blood can be a serious problem (the "bends") for divers breathing compressed air (78% N2 by volume) at d
OLga [1]

Answer:

The volume is 19.7 mL

Explanation:

<u>Step 1</u>: Given data

Pressure at sea level = 1.00 atm

Pressure at 50 ft = 2.47535 atm

kH for N2 in water at 25°C is 7.0 × 10−4 mol/L·atm

Molarity (M) = kH x P

<u>Step 2</u>: Calculate molarity

M at sea level:

M = 7.0*10^-4 * (1.00atm * 0.78) = 5.46*10^-4 mol/L

M at 50ft:

M = 7.0*10^-4 * (2.47535atm * 0.78) = 13.5*10^-4 mol/L

We should find the volume of N2. To find the volume whe have to find the number of moles first. This we calculate by calculating the difference between M at 50 ft and M at sea level.

13.5*10^-4 mol/L - 5.46*10^-4 mol/L = 8.04*10^-4 mol/L

Step 3: Calculate volume

P*V=nRT

with P = 1.00 atm

with V = TO BE DETERMINED

with n =  8.04*10^-4 mol/L  *1L = 8.04*10^-4

with R= 0.0821 atm * L/ mol *K

with T = 25 °C = 273+25 = 298 Kelvin

To find the volume, we re-organize the formula to: V=nRT/P

V= (8.04*10^-4 mol * 0.0821 (atm*L)/(mol*K)* 298K ) / 1.00atm = 0.0197L = 19.7ml

The volume is 19.7 mL

5 0
2 years ago
By which process is a precipitate most easily separated from the liquid in which it is suspended
Gelneren [198K]
<span>Filtration, if its a precipitate that means its insoluble. </span>
7 0
1 year ago
Read 2 more answers
Calculate the number of grams of solute in 500.0 mL of 0.189 M KOH.
KIM [24]

Answer : The number of grams of solute in 500.0 mL of 0.189 M KOH is, 5.292 grams

Solution : Given,

Volume of solution = 500 ml

Molarity of KOH solution = 0.189 M

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Formula used :

Molarity=\frac{\text{Mass of KOH}\times 1000}{\text{Molar mass of KOH}\times \text{Volume of solution in ml}}

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\text{Mass of KOH}=5.292g

Therefore, the number of grams of solute in 500.0 mL of 0.189 M KOH is, 5.292 grams

7 0
1 year ago
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Katen [24]

the answer is c a tries to trick people by using the same numbers


6 0
1 year ago
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