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Mkey [24]
3 years ago
10

In the game of pool, a player uses a stick called a cue to strike a white ball so

Chemistry
2 answers:
o-na [289]3 years ago
7 0

Answer:

the answer is B: cue - white ball - blue ball.

Explanation:

The energy transfers from the stick to the white ball, then from the white ball to the blue ball. I also took this and it was correct!

sveta [45]3 years ago
4 0

Answer:

B Cue - white ball + blue ball

Explanation:

The Transfer between energy's or how much power you put in the Cue.

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The study of all chemicals containing carbon is called ?
Jlenok [28]
The study of all chemicals containing carbon is organic chemistry.
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3 years ago
Consider a sample of a hydrocarbon (a compound consisting of only carbon and hydrogen) at 0.959 atm and 298 K. Upon combusting t
Masja [62]

Answer:

Molecular formula of hydrocarbon is: C₂H₆

Explanation:

The combusting of the hydrocarbon:

CxHy + O₂ → CO₂ + H₂O

Using gas law to obtain molar mass of the gas mixture (CO₂ + H₂O):

P/RT = n/V

Where:

P is pressure (1,208 atm)

R is gas constant (0,082 atmL/molK)

T is temperature (375 K)

n/V = 0,0393 mol/L

1,1128 g/L ÷ 0,0393 mol/L = 28,32 g/mol

Thus, average molecular weight is:

28,32 g/mol = 44,01 g/mol X + 18,02 g/mol Y

1 = X + Y

Where X is CO₂ molar percentage and Y is H₂O molar percentage.

Solving:

X = 0,397

Y = 0,603

39,7% H₂O

60,3% CO₂

With this proportion you can obtain ratio CO₂:H₂O thus:

60,3/39,7 = 1,52 So, 2 CO₂: 3H₂O

The moles of the hydrocarbon are:

PV/RT = n

P (0,959 atm)

V ( 1/5 of final volume)

T (298K)

n = 7,85x10⁻³ mol

The moles of CO₂ are:

0,0393 mol × 2 mol CO₂/ 5 mol total =0,01572.

Ratio of CO₂:CxHY =

0,01572 : 7,85x10⁻³ 2 CO₂: 1 CxHY

Doing:

1 CxHy + O₂ → 2 CO₂ + 3 H₂O

By mass balance:

1 C₂H₆ + 7/2 O₂  → 2 CO₂ + 3 H₂O

Thus, molecular formula of hydrocarbon is: <em>C₂H₆ </em>

I hope it helps!

7 0
3 years ago
You weigh two different objects on the same scale in the same location on Earth. The weights are different. What must be differe
timofeeve [1]
They can be differnt shape or one must weight more then the other one
3 0
3 years ago
Read 2 more answers
Match the vocabulary word to its definition.
hoa [83]

Answer:

<u>Nucleus</u> - The central part of the atom containing protons and neutrons.

<u>Electron</u> - A positively charged particle located in the nucleus of an atom.

<u>Proton</u> - A positively charged particle located in the nucleus of an atom.

<u>Electron Cloud</u> - The area of the at surrounding the nucleus where electrons can be found.

<u>Neutron</u> - a negatively charged particle that orbits the nucleus of an atom.

6 0
3 years ago
Read 2 more answers
How much energy is required to raise the temperature of 3kg of iron from 20 degrees Celsius to 25 degrees Celsius
Yuri [45]

Answer:

6750 J

Explanation:

The specific heat capacity of iron is 450 J/kg/K

Quantity of heat = mcθ; where m is the mass and c is the specific heat capacity and θ is the temperature change.

Therefore;

m = 3 kg, c = 450 J/kg/K and θ = 5°C

Quantity of heat = 3 × 450 × 5

                           <u>= 6150 Joules</u>

5 0
3 years ago
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