It takes Serina 0.25 hours to drive to school. Her route is 16 meters long. What is

Explain how the change in free energy determines the direction of a chemical reaction and how chemical reactions eventually reac

ohaa [14]

<span>Free energy refers to exactly that "energy that is free to perform and/or have a reaction." Also known as Gibbs (G) It is energy that is associated with a chemical reaction and is used for work. You also need 3 other variables: heat, temperature, and entropy. The formula for the above would be: G = H - T (E)</span>

4 0

4 years ago

If heat energy is transferred from direct contact between a warm object and a cold object, it has been transferred by __________

Ganezh [65]

If heat energy is transferred from direct contact between a warm object and a cold object, it has been transferred by Convection.

Heat is transferred through convection, which is the large-scale movement of molecules inside gases and liquids. Conduction is used to move heat from the object to the fluid initially, but fluid motion is responsible for the bulk of the heat transfer.

The transfer of heat between two bodies by currents of moving gas or fluid is known as convection on heat transfer. In free convection, air or water rises and is replaced by a cooler parcel of air or water as it moves away from the hot body.

To learn more about convection please visit -
brainly.com/question/16635311
#SPJ4

4 0

1 year ago

A helium filled blimp will rise just so high into the atmosphere and then stop. Why? Will a smaller blimp rise higher than a lar

tankabanditka [31]

Answer:

See explanation

Explanation:

When a helium blimp rises in the atmosphere, a point eventually comes when the buoyancy of the blimp compared to the air it displaces is no longer greater than gravity's pull on the blimp hence it stops rising.

A smaller blimp will rise more than a larger blimp at the same pressure because the weight of the blimp determines the altitude to which it will rise.

5 0

4 years ago

What’s the difference between directly<br> proportional and inversely proportional.

tatiyna

Answer:

Directly proportional:

A proportion of two variable quantities. when the ratio of two quantities are constant.

inversely proportional:

when one value decreases at the same rate that the other increases.

Explanation:

I hope this does help you, have a great day. :)

7 0

3 years ago

Both diamond and graphite (i.e. pencil lead) consist of carbon atoms. They are only different in their crystalline structures. O

prisoha [69]

Answer:

Moles of carbon atoms = 3.33 × $10^{-6}$ mol

No. of atoms of C in Diamond = 2.007 × $10^{28}$ atom

Atoms of graphite = 6.27 × $10^{23}$ Atoms

Explanation:

given data

Cost of 0.2g of diamond = $5000

Cost of 25 g of graphite = $ 2

solution

we know cost of 0.2g of diamond is $ 5000 so that for 1$

if buy 1$ = $\frac{0.20}{5000}$

1$ = 4.0 × $10^{-5}$ g Carbon

and Moles of carbon atoms is express as

Moles of carbon atoms = Given mass of Carbon ÷ atomic mass of C .........1

Moles of carbon atoms = 4.0 × $10^{-5}$ g/ 2.0g

Moles of carbon atoms = 3.33 × $10^{-6}$ mol

and

No. of atoms of C in Diamond = No. of moles × Avogadro NO ..............2

No. of atoms of C in Diamond = 3.33 × $10^{-6}$ mol × 6.022 × $10^{28}$

No. of atoms of C in Diamond = 2.007 × $10^{28}$ atom

Graphite

and wew have given Cost of 25 g of graphite is $2 so for but 1$ we get

for buy $1 = 25÷2 = 12.5 g Of graphite

Moles of graphite = 12.5÷12 = 1.04 mol

Atoms of graphite = 1.04 × 6.022 × 1023

Atoms of graphite = 6.27 × $10^{23}$ Atoms

6 0

3 years ago