What is an everyday example of covalent bonds and ionic bonds

The theoretical yield : = 28.34 g Al₂O₃

Given

15 g of Aluminum react

Required

The theoretical yield

Solution

Reaction

4Al(s) + 3O₂ (g)⇒ 2Al₂O₃(s)

mol of Aluminum :

mol = mass : Ar Al

mol = 15 g : 26.98 g/mol

mol = 0.556

From the equation, mol ratio of Al : Al₂O₃ = 4 : 2, so mol Al₂O₃ :

= 2/4 x mol Al

= 2/4 x 0.556

= 0.278

Mass Al₂O₃ :

= mol x MW Al₂O₃

= 0.278 x 101.96

= 28.34 g

Answer:

metric system

Explanation:

In the metric system, the basic unit of length is the meter. A meter is slightly larger than a yardstick, or just over three feet. The basic metric unit of mass is the gram. Finally, the basic metric unit of volume is the liter.

Answer:

yesyeysesyesyesyesteys

Answer: 29.8

Explanation:

The acceleration : 0.25 m/s²

Given

mass = m = 24 kg

Force = F = 6 N

Required

The acceleration

Solution

Newtons' second law :

Newton's 2nd law explains that the acceleration produced by the resultant force on an object is proportional and in line with the resultant force and inversely proportional to the mass of the object

ΣF =  m x a

[tex]\large {\boxed {\bold {a = \frac {\sum F} {m}}}[/tex]

Input the value :

6 N = 24 kg x a

a = 6 : 24

a = 0.25 m/s²

Answer:

0.25

Explanation:

its 0.25

Answer:

Explanation:

People use detector to know the ionization of electromagnetic radiation i.e alpha, beta and gamma radiation and the output produced.

In the past, the early detectors use photographic plates which is use to detect tracks due to nuclear reactions.

It is important to know particles before inventing detectors because detectors produces visible trajectories or tracks as a result of particles that are charged which can traverse the apparatus. It was used to detect the positron and also muons and these w are particles that are produced by cosmic rays which is as a result of their interaction in the Earth's atmosphere.

Answer:

1) Non metals

2) The melting point increase as we go down the group.

3) The boiling point also increase as we go down the group.

4) The halogens grow darker as we move down the group.

5) The same happens for Iodine as the boiling point and melting point increase as we go down the group.

6) Bromine is more reactive than Iodine as because the size of iodine is greater than that of Bromine.

7) The size of atoms become bigger and larger.

8) Nucleus of every atoms of different elements contain neutron and proton and the nucleus is covered by shells.

9) Because they are placed vertically second from the right in the periodic table.

queries comment me!!

Answer:

1) Non metals

2) The melting point increase as we go down the group.

3) The boiling point also increase as we go down the group.

4) The halogens grow darker as we move down the group.

5) The same happens for Iodine as the boiling point and melting point increase as we go down the group.

6) Bromine is more reactive than Iodine as because the size of iodine is greater than that of Bromine.

7) The size of atoms become bigger and larger.

8) Nucleus of every atoms of different elements contain neutron and proton and the nucleus is covered by shells.

9) Because they are placed vertically second from the right in the periodic table.

Explanation:

This absolute amount of pressure does not play a significant difference.

At high temperatures and low pressures, its results deviate too little.

But at low temperatures and high pressures, it will change significantly and this difference will change from gas to gas.

In the image you can see the difference between some results from both equations.

Answer:

2, 2, 2, and 1

Explanation:

I put that in and it was correct.

Answer:

Sound is vibrations that travel through a medium, and which are then converted into electrical signals by our brain so that we interpret them as a noise that we hear. These vibrations consist of particles colliding with each other (this is why sound cannot travel through space; there are no particles). At warmer temperatures, the particles that make up air will move faster, so these collisions will happen more frequently. Therefore the vibrations occur more quickly, so sound travels faster and reaches our ears in a shorter amount of time.

The speed of sound can travel faster in hot air than it can in cold air. This is because the molecules of air can move even faster and the vibrations of the sound wave can transmit faster. Sound is a type of mechanical wave, meaning that it requires a medium to transmit energy. Mediums are any substance that has mass and takes up space, from the air in the room to the metal atoms in an iron fence.

Explanation:

hope that helps :)

Answer:

Sound travels faster in a warm room because temperature affects the speed of a wave. In a warm room, the particles of air move faster and have higher chances of bumping into each other, which then increases the instances of energy transfer.

Explanation:

just trust me cuz

Answer: The atom count for each element on the reactant side of a balanced chemical equation is equal to the atom count for each element on the product side of the same equation

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products formed must be equal to the mass of reactants taken.

In order to get the same mass on both sides, the atoms of each element must be balanced on both sides of the chemical equation.

[tex]2H_2+O_2\rightarrow 2H_2O[/tex]

Thus there are 4 atoms of hydrogen on reactant as well as product side.

Also there are 2 atoms of oxygen on reactant as well as product side.

Answer:

4H₂O(l) → 4H₂(g) + 2O₂(g)

Balancing equations

1. 3Fe(s) + 4H₂O(g) → Fe₃0₄(s) + 4H₂(g)

2. 2AlBr₃(aq) + 3Cl₂(g) → 2AlCl₃(aq) + 3Br₂(l)

3. 2HNO₃(aq) + Ba(OH)₂(aq) → Ba(NO₃)₂(aq) + 2H₂O(l)

4. 2Al(s) + 3Pb(NO₃)₂ → 2Al(NO₃)₃(aq) + 3Pb(s)

5. 3NaOH(aq) + Fe(NO₃)₃ → Fe(OH)₃(s) + 3NaNO₃(aq)

Explanation:

From the question given, I have been able to balance the chemical equations correctly.

In balancing chemical equations, the chemical equation must have equal number of atoms for each element that are both in the reactant side and in the product side.

For the above to be achieved, the number of atoms in each element will have to be multiplied and added.

A look at the balanced chemical equation above, you will discover that each element has the same number of atoms both in the reactant side and in the product side.

Answer: aerobic respiration converts about 40% of the available energy of glucose into ATP!!!

Answer:

1.Winter

2.Autmn

3.Summer

4.Spring

I hope this helps!

Answer:

Mass and Velocity

Explanation:

hope this is the right answer might wrong tho

Answer:

its velocity and mass

Explanation:

I got it right on edg

Answer:

2. volume

Explanation:

Answer:

volume

Explanation:

Answer:

The first 5 are exothermic reaction because heat is in product means heat is evolved or given out.

And last no reaction shows that heat is required so last reaction is endothermic reaction.

Explanation:

And heat is evolved in exothermic reaction and heat is absorbed in endo thermic reaction

Answer:

Thunder!! Hope this helps!!

Answer:

it would become darker. there would be a higher level of water pressure. and there would be less animals, or different alimals.

Answer:2097.5998675091255

Explanation:

Answer:

The answer is C: “sunlight in deeper locations decreases”

Explanation:

The answer is C because the more salinity water has.. the harder it is to see and the harder it is for light to travel through the ocean.

Based on the given options, when ocean salinity increases, the amount of sunlight in deeper locations decreases due to increased turbidity.

Ocean salinity refers to the amount of dissolved salts present in ocean water.

The salinity of the ocean increases in events such as volcanic eruptions due to the influx of minerals into the ocean.

When ocean salinity increases:

Therefore, when ocean salinity increases, the amount of sunlight in deeper locations decreases due to increased turbidity.

Learn more about ocean salinity at: https://brainly.com/question/14346963

Answer:

Mercury

Explanation:

mercury, and it's the only metal that normally exists on Earth as a liquid.

Answer:

It is a solid or gas

Explanation:

solid or gas flow to the bottom of its container

Answer: Geotropism allows the plants to correctly orient themselves for growth.

Explanation:

320 g IF₇

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Step 1: Define

7.3 × 10²³ molecules IF₇

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of I - 126.90 g/mol

Molar Mass of F - 19.00 g/mol

Molar Mass of IF₇ - 126.90 + 7(19.00) = 259.9 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

315.056 g IF₇ ≈ 320 g IF₇

Answer:

36

orrr

20

Explanation:

36 explanation:18x2=36

20 explanation:18+2=20

The volume of the object : 9 ml

Given

The density of an object : 2 g/ml

Mass : 18 g

Required

The volume

Solution

Density is a quantity derived from the mass and volume  

Density is the ratio of mass per unit volume  

Density formula:  

[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]

ρ = density  

m = mass  

v = volume

V=m : ρ

V = 18 g : 2 g/ml

V = 9 ml

Answer:

36.8 g/mol of O

Explanation:

To find the number of grams, multiply the number of moles by the atomic mass of the element.

Oxygen has an atomic mass of 16.00.

2.3 moles O × (16.00 g O ÷ 1 mole) = 36.8 g/mol O

Hope that helps.