1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bearhunter [10]
2 years ago
8

A teacher is teaching a lesson on energy transformations. Which explanation is the best at comparing the amount of energy contai

ned in a granola bar you eat for breakfast and the amount of mechanical energy used to walk to school. A. the amount of chemical energy in the granola bar is equal to the mechanical energy B. the amount of chemical energy in the granola bar is less than the mechanical energy C. the amount of chemical energy in the granola bar is greater than the mechanical energy D. the energy amounts cannot be compared
Chemistry
2 answers:
LenKa [72]2 years ago
4 0
I believe it’s b though not sure
poizon [28]2 years ago
4 0

Answer:

D

Explanation:

You might be interested in
Ethylene gas and steam at 320°c and atmospheric pressure are fed to a reaction process as an equimolar mixture. the process prod
Reil [10]
The heat transfer formula is;
Q = m * c * Δ T >>>> (1)
where, Q is the heat transfer
m = mass  (gram)
c = the specific heat capacity (J/g)
Δ T = change in temperature
∵ we have one mole of Ethanol
∴ the weight of ethanol equals its molecular weight = (2*12)+(6*1)+(16) = 46 g
we will assume that the specific heat capacity of ethanol is 2.46 J/g (from google) 
ΔT = 25 - 320 = - 295 C
By substitution in (1)
∴ Q = 2.46 * 46 * (-295) = - 33382.2 J
4 0
3 years ago
When a hydrogen atom makes the transition from the second excited state to the ground state (at -13.6 eV) the energy of the phot
viktelen [127]

Answer : The energy of the photon emitted is, -12.1 eV

Explanation :

First we have to calculate the 'n^{th}' orbit of hydrogen atom.

Formula used :

E_n=-13.6\times \frac{Z^2}{n^2}ev

where,

E_n = energy of n^{th} orbit

n = number of orbit

Z = atomic number  of hydrogen atom = 1

Energy of n = 1 in an hydrogen atom:

E_1=-13.6\times \frac{1^2}{1^2}eV=-13.6eV

Energy of n = 2 in an hydrogen atom:

E_3=-13.6\times \frac{1^2}{3^2}eV=-1.51eV

Energy change transition from n = 1 to n = 3 occurs.

Let energy change be E.

E=E_-E_3=(-13.6eV)-(-1.51eV)=-12.1eV

The negative sign indicates that energy of the photon emitted.

Thus, the energy of the photon emitted is, -12.1 eV

3 0
2 years ago
Why do you think large differences in temperature between the wet bulb and dry bulb thermometers are possible only at higher tem
olganol [36]

Answer:

This is the temperature indicated by a moistened thermometer bulb exposed to the air flow. The evaporation is reduced when the air contains more water vapor. The wet bulb temperature is always lower than the dry bulb temperature but will be identical with 100% relative humidity.

Explanation:

7 0
3 years ago
What do you need in order to generate electricity using light from the sun?
Klio2033 [76]
Solar panels ( Solar-powered photovoltaic )
6 0
3 years ago
Provide the nuclear equation for a decay of polonium-214
s344n2d4d5 [400]
The nuclear equation that describes the alpha decay of Polonium-210 can be written like this:
210/
84Po→206/82Pb+4/2 He
3 0
3 years ago
Other questions:
  • How many protons and electrons are present in a vanadium atom
    8·2 answers
  • Consider the following isotopic abundance data for argon (Ar) and silicon (Si):
    9·1 answer
  • How does Controlled fires help prevent real forest fires?
    15·1 answer
  • Which of the following is an example of a longitudinal wave
    12·2 answers
  • The height of a column of mercury in a closed-end manometer is 13.2 cm. What is the pressure of the gas in torr
    5·1 answer
  • Given that a commercial airliner has a range a range of 9,500 miles using 265 tons of JP-4 fuel. Estimate the range of the aircr
    10·1 answer
  • Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of MgSO3 and HI are mixed. Give th
    10·1 answer
  • !!!! If you need more information just let me know.
    9·1 answer
  • Consider the following reaction where K. = 9.52 10 2 at 350 K.
    12·1 answer
  • 2.8 dm3 of gas X at STP has equal mass with 11.2 dm3 of C2H6 at STP. What is
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!