All categories

3 years ago

The form of energy that food contains is which of the following?

Chemistry

1 answer:

julia-pushkina [17]3 years ago

5 0

Answer:

A. Chemical because there alot of chemicals that contains energy such as Carbohydrates which fruit and vegetables contain.

You might be interested in

Which formula can be used to calculate the molar mass of hydrogen peroxide (H2O2)? (5 points)

ratelena [41]

answer: option d (2×molar mass of H +2×molar mass of O

 

7 0

3 years ago

It takes 281.7 kJ of energy to remove 1 mole of electrons from the atoms on the surface of lithium metal. If lithium metal is ir

Alex17521 [72]

Answer:

The maximum kinetic energy of electron is = 2.93 × $10^{-19}$ Joule

Explanation:

We know that total energy

$E = \frac{hc}{\lambda}$ ------------ (1)

Here h = plank's constant = 6.62 × $10^{-34}$ J s

c = speed of light = 3 × $10^{8}$ $\frac{m}{s}$

$\lambda$ = 261 nm = 261 × $10^{-9}$ m

Put all these values in equation (1) we get

E = 7.6 × $10^{-19}$ J

We know that

Total energy = Energy to remove an electron + K.E of electron

Energy to remove an electron = $\frac{281.7 (1000)}{(6.023)10^{23} }$

Energy to remove an electron = 4.67 × $10^{-19}$ J

K.E of electron = Total energy - Energy to remove an electron

K.E of electron = 7.6 × $10^{-19}$ - 4.67 × $10^{-19}$

K.E of electron = 2.93 × $10^{-19}$ Joule

Therefore the maximum kinetic energy of electron is = 2.93 × $10^{-19}$ Joule

3 0

4 years ago

Select the answer that lists the radiation waves in order of increasing

lubasha [3.4K]

D. microwaves, Ultraviolet, x-rays

3 0

3 years ago

Read 2 more answers

Non chemical industry examples

Luba_88 [7]

Answer:

Light , heat , and sound are examples.

4 0

3 years ago

Read 2 more answers

What is the density of an object with the density of 3 when cut in half?

anyanavicka [17]

The density is 3 because the density remains the same.

8 0

3 years ago