CHEMISTRY HIGH SCHOOL

How does thermal energy travel?

Answers

Answer 1
Answer: Thermal energy travels by conduction, convection, and radiation. It occurs when a cooler and warmer object touches each other. 
Answer 2
Answer: Thermal energy travels by conduction, convection, and radiation. Conduction occurs when two or more objects of different temperatures are touching each other. The heat flows from the warmer object to the cooler object, until the objects reach equal temperatures.
I hope this helps! :)

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What is the total number of moles of hydrogen gas contained in 9.03x10^23 molecules?
what would be the final volume when 2.20 M solution is made from 25.0 mL of a 12.0 M solution? plzz show work
Neptunium's only naturally occurring isotope, 23793np, decays by emitting one alpha particle, one beta particle, and one gamma ray. What is the new atom formed from this decay?
An average home in Colorado requires 2.00 x 107 KJ of heat per month. How many grams of natural gas (methane) must be burned to supply this energy?CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) ΔH°rxn= –890.4 kJ/mol
The particles that are lost, gained, or shared in chemical reactions are

Need help with this equation! Can anybody lay out an answer please?Use this equation; 4Fe + 3O2 -> 2Fe2O3.
If 96.0 grams of oxygen react, what mass of iron was oxidized?

A.) 32.0 g
B.) 96.0 g
C.) 167 g
D.) 223 g

Thanks!

Answers

As you can see in the reaction, for each 3O_2 that reacts, two Fe_2O_3 are created.

There are (96.0)/(16)=6mol of oxygens reacting, hence 2*6/3=4 mols of iron will be oxidized, which represents 24*55.8=\boxed{223g}

What is a covalent bond?​

Answers

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding. (hope this helps.)

Answer:

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

Explanation:

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N2 + 3H2 mc033-1.jpg 2NH3 What is the percent yield of NH3 if the reaction of 26.3 g of H2 produces 79.0 g of NH3?

Answers

The balanced chemical reaction is:

N2 + 3H2 = 2NH3 

 

We are given the amount of H2 being reacted. This will be our starting point.

26.3 g H2 (1 mol H2 / 2.02 g H2) 2 mol O2/3 mol H2) ( 17.04 g NH3 / 1mol NH3) = 147.90 g O2

 

Percent yield = actual yield / theoretical yield x 100

 

Percent yield = 79.0 g / 147.90 g x 100

Percent yield = 53.4%

Answer:

53.4 percent yield, the fourth option

Explanation:

What is electron configuration of sulfer?

Answers

Sulfur has 16 protons and 16 electrons.
The electronic configuration of Sulfur is:
2, 8, 6        =          16 

What is the average surface temperature of Uranus

Answers

The average surface temperature of Uranus (nearly being the coldest planet in the solar system) is -224°C
The surface of Uranus.The second coldest planet in our solar system is -224°C

19 An effective collision between reactant particles requires the particles to have the proper(1) charge and mass
(2) charge and orientation
(3) energy and mass
(4) energy and orientation

Answers

An effective collision between reactant particles requires the particles to have the proper energy and orientation. The particles must have the minimum energy to collide with each other and proper orientation to overlap.

What is collision ?

Collision is a short term force acting between two object when they hit together. According to the kinetic molecular theory of matter, only effective collisions leads to the chemical bonding between atoms.

To make effective collisions, the atoms or constituent particles must acquire a minimum amount of energy  to overcome the barrier potential of reaction.

Similarly, the particles must have proper orientation to have overlapping between their valence shell and form chemical bonds. Inappropriate orientation does not leads to the formation of bond between particles. Hence, option 4 is correct.

Find more on collision;

brainly.com/question/13138178

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(4) energy and orientation
They need the energy to be able to break the original bonds, and they need the orientation to be able to bond with the new atoms
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