Need quick! Please help rn! THANK YOU!

Answer:

A= Compound

B= Mixture

C= Element

D= Element

Explanation:

A has two different types of atoms chemically together as a compound

B is made up of two or more different atoms not chemically joined together

C has one type of atom

D has one type of molecule. They're the same and could be a diatomic element like hydrogen

Sorry if this is confusing or wrong

Answer:

2 atoms

Explanation:

The reactants side is the left side of the arrow. Li represents lithium and there is a 2 next do it which indicates that there are 2 lithium particles or atoms

Answer: all of them?

Explanation:

Answer:

Deku.

Explanation:

Answer:

C: The C horizon is a subsurface horizon. It is the least weathered horizon. Also known as the saprolite, it is unconsolidated, loose parent material. The master horizons may be followed by a subscript to make further distinctions between differences within one master horizon.

Explanation:

Answer:

D

Explanation:

I learned this last year.

Answer: 0.99 grams of chlorine gas is produced by the reaction of 3.3g of ammonium perchlorate

Explanation:

To calculate the moles, we use the equation:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]  

[tex]\text{Number of moles of } NH_4ClO_4=\frac{3.3g}{117.5g/mol}=0.028moles[/tex]

The decomposition of ammonium perchlorate is :

[tex]2NH_4ClO_4\rightarrow Cl_2+N_2+2O_2+4H_2O[/tex]

According to stoichiometry :

2 moles of [tex]NH_4ClO_4[/tex] produce =  1 mole of [tex]Cl_2[/tex]

Thus 0.028 moles of [tex]NH_4ClO_4[/tex] produce=[tex]\frac{1}{2}\times 0.028=0.014moles[/tex]  of [tex]Cl_2[/tex]  

Mass of [tex]Cl_2=moles\times {\text {Molar mass}}=0.014moles\times 71g/mol=0.99g[/tex]

Thus 0.99 grams of chlorine gas is produced by the reaction of 3.3g of ammonium perchlorate

Answer:

[tex]^A_ZX[/tex] is the notion of an atom 'X', if the mass number is A and the atomic number is Z

Explanation:

The symbol of the element is "X"

The notion comprises of symbol of element "X" in the center.

On the upper left side of the symbol mass number "A" is kept and on the lower left side of the symbol, atomic number "Z" is kept.

Thus, notion will be

[tex]^A_ZX[/tex]

Answer:

false

Explanation:

Answer:

True

Explanation:

they can get up to several hundreds of feet.

Answer:

Na2B4O7 + H2SO4 + 5H2O → 4H3BO3 + Na2SO4  

Explanation:

The unbalanced equation is given as;

Na2B4O7 + H2SO4(aq) + H2O → H3BO3(s) + Na2SO4(aq)

Balancing the equation of the reaction involves making sure the number of moles of elements in the reactants to be equal to the number of moles of the element of the products.

The balanced equation is given as;

Na2B4O7 + H2SO4 + 5H2O → 4H3BO3 + Na2SO4  

Answer:

q_metal = -12000 J = -12 KJ

Here, the negative sign indicates that the energy is lost by the metal piece.

Explanation:

The magnitude of energy change of the metal X can be given by the following formula:

[tex]q_{metal} = mC\Delta T[/tex]

where,

m = mass of metal = 100 g

C = Specific Heat Capacity of metal X = 0.24 J/g.°C

ΔT = Change in Temperature of Metal Piece = 0° C - 500°C = -500°C

Therefore, using these values in the equation, we get:

[tex]q_{metal} = (100\ g)(0.24\ J/g^oC)(-500^oC)\\[/tex]

q_metal = -12000 J = -12 KJ

Here, the negative sign indicates that the energy is lost by the metal piece.

Answer:

62.00

Explanation:

H2 means that there are two moles of hydrogen so multiply the atomic mass by two (1.01 × 2 = 2.02)

C only has one mole sp leave 12.01 alone

And multiply oxygen by 3 because there are three moles of oxygen (15.99 × 3 = 47.97)

Add them all together!

2.02 + 12.01 + 47.97 = 62.00 for molar mass

Answer:

the remaining books weigh 4 kilograms or 4000 grams

Answer:

See Explanations

Explanation:

The Empirical Gas Laws include ...

Boyles Law => P₁V₁ = P₂V₂

Charles Law => T₁/V₁ = T₂/V₂

Gay-Lussac's Law => P₁/T₁= P₂/T₂

Avogadro's Law => V₁/n₁ = V₂/n₂

Combined Gas Law => P₁V₁/T₁ = P₂V₂/T₂

Ideal Gas Law => PV = nRT; R = 0.08206 L·Atm/mol·K

One only needs to learn the 'Combined Gas Law' in that it embodies all of the gas law problems.

Start with a simple table for P, V & T and enter given data. If a variable is not given, assume it is constant. Set up P₁V₁/n₁T₁ = P₂V₂/n₂T₂ and substitute given data. Solve for unknown.

Your Problems:

1. P₁ = 1 Atm        P₂ = 3 Atm

  V₁ = 300ml      V₂ = ?

  T₁ = Constant  T₂ = T₁

   n₁ = Constant  n₂ = n₁

P₁V₁/n₁T₁ = P₂V₂/n₂T₂  

=> (1Atm)(300ml)/(Constant)(Constant) = (3Atm)(V₂)/(Constant)(Constant)

=> (1Atm)(300ml) = (3Atm)V₂

=> V₂ = (1Atm)(300ml)/(3Atm) = 100ml

2. P₁ = 1 Atm        P₂ = ?

   V₁ = Constant  V₂ = V₁

   T₁ = 273K         T₂ = 82K

   n₁ = Constant  n₂ = n₁

P₁V₁/n₁T₁ = P₂V₂/n₂T₂

=> (1Atm)(Constant)/(273K)(Constant) = (P₂)(Constant)/(82K)(Constant)

=> (1Atm)/(273K) = (P₂)/(82K)

=> P₂ = (1Atm)(82K)/(273K)

=> P₂ = 0.3 Atm (1 sig-fig)

3. P₁ = 101.25kPa     P₂ = 506kPa

   V₁ = 5 Liters         V₂ = ?

   T₁ = Constant       T₂ = T₁

   n₁ = Constant  n₂ = n₁

P₁V₁/n₁T₁ = P₂V₂/n₂T₂

=> (101.25kPa)(5L)/(Constant)(Constant) = (506kPa)(V₂)/(Constant)(Constant)

=> (101.25kPa)(5L) =  (506kPa)(V₂)

=> V₂ = (101.25kPa)(5L)/(506kPa)

=> V₂ = 1.00 Liter

4. P₁ = Constant       P₂ = P₁

   V₁ = 3.2 Liters      V₂ = ?

   T₁ = 273°C + 273 = 546K       T₂ = 400°C + 273 =673K*

   n₁ = Constant  n₂ = n₁

*Note => be sure to convert all temps to Kelvin when working empirical gas law problems. K = °C + 273

P₁V₁/n₁T₁ = P₂V₂/n₂T₂

=> (Constant)(3.2L)/(Constant)(546K) = (Constant)(V₂)/(Constant)(673K)

=> (3.2L)/(546K) = (V₂)/(673K)

=> V₂ = (3.2L)(673K)/(546K)

=> V₂ = 3.944 Liters ≅ 3.9 Liters (2 sig-figs)

Hello! Here's the answer I was able to come up with:

Why does Na have only one dot?

Sodium, or Na, has only one valence electron.  (This makes the atom tend to participate in ionic bonding and "give" its single valence electron to an atom like chlorine.)

Why do none of these diagrams show more than 8 dots?

It is physically impossible for an atom to have more than 8 electrons in its valence layer, according to the Octet Rule.

What relationship do you notice between the dots in these two charts?

The dot diagram for each element represents the number of electrons each element will have in its outermost, or valence, shell. (2-8-8)

The number of dots that hydrogen and helium have in their dot diagram is the same as the number of electrons shown for them on the Periodic Table. Why?

An atom can have a maximum of two electrons in its innermost layer. Hydrogen and helium have only one and two electrons, respectively, so they don't have enough electrons to actually have more than one layer. Therefore, their outermost layer is, in fact, their only layer. This is why the number of dots that hydrogen and helium have in their dot diagram is the same as the number of electrons shown for them on the Periodic Table.

Don't copy this word for word! You will most likely be in trouble for plagiarism.  Instead, rewrite these ideas in your own words, or paraphrase. Good luck, and I know you can do it! ♥  

Answer  A`bousi

Explanation:

Answer:

Electrolyte

hope it helps and your day will be full of happiness

Answer:

1)Energy converter is the transformation of one form of energy into another form .It is more specifically that the term energy conversions refers to the process through which energy is changed into forms that are useful to humans .For 100 of years humans have used an array of devices and systems for this purpose.

2) The three energy converters that you or your family use regularly are

3)The three kinds of power plants that produce electricity in Ontario are

4)A power plant is an industrial facility that generates electricity from primary energy most of the power plants use one more generators that convert mechanical energy into electrical energy in order to supply power to the electrical grid for society's electrical needs.

may be this was ur answer for ur question u wanted

Answer:

There is strong attraction or repulsion between the gas particles.In other words,they strongly interact with each other" is NOT an assumption made by kinetic molecular theory.

The theory that attempts to elucidate the behaviour of gases is known as kinetic molecular theory.

The postulates of kinetic molecular theory of gases are given below,

\bigstarGases consist of large number of identical particles(atoms or moleculesthat are so small and so far apart

\bigstar There is no force of attraction between the particles of a gas at ordinary temperature and pressure

\bigstarParticles of a gas are always in constant and random motion

\bigstarParticles of a gas move in all possible directions in straight lines. During their random motion, they       collide with each other and with the walls of the container

\bigstarCollisions of gas molecules are perfectly elastic. This means that total energy of molecules before and       after the collision remains same

\bigstarThe average kinetic energy (energy due to motion) of the gas particles is proportional to the temperature    measured in kelvin. As temperature increases, the particles move faster and have more energy

\bigstarAt any particular time, different particles in the gas have different speeds and hence different kinetic        energies.

\therefore From the above data it is clear that "There is strong attraction or repulsion between the gas particles.In other words,they strongly interact with each other" is NOT an assumption made by kinetic molecular theory.

Explanation:

According to Kinetic theory of gases, the kinetic energy of particles are derived from the temperature and not by their mass and velocity. Hence, option a is not an assumption of kinetic theory of gases.

According to kinetic theory of gases, gases substances are made of tiny particles. These particles when taken in a container have negligible volume compared to the volume of the container.

The collision between the gaseous particles and and between the particles and the wall make the pressure within the container. The kinetic energy of the particles is directly proportional to the temperature of the gas.

According to the theory, the kinetic energy is not determined from the mass and velocity of the particles, but by the temperature of the system. Hence, option a is not an assumption of kinetic molecular theory of gases.

Find more on kinetic theory:

https://brainly.com/question/14349214

#SPJ3

Answer:

1. Ok, so you have a 1:1 ratio of FeCl2 to FeCl3, which is shown by the fact that if you react 2 moles of FeCl2 you get 2 moles of FeCl3. So therefore, if you react 4 moles of FeCl2, you'd form 4 moles of FeCl3.

2. You have a 1:2 ratio of Cl2 to FeCl2, for every 1 mole of Cl2, you need 2 moles of FeCl2, so therefore, for 7 moles of Cl2, you need 2x7moles = 14 moles

3. 1:1 ratio. So you start with 2.28moles.

4. 1:2 ratio of Cl2 to FeCl2, so therefore to get from FeCl2 to Cl2 you need to divide by 2. Therefore, you need 3.25moles / 2 = 1.625 moles

Explanation:

pls mark branliest

Answer:

6.25m/s

Explanation:

speed = distance/time

speed = 100/16 = 6.25m/s

Answer:

D

Explanation:

The salamanders undergo se×ual reproduction.

This is defined as the production of new organisms by the combination of genetic information of two individuals of different genders.

Thus results in variations in the offsprings produced which us why the Salamanders had different color patches.

Read more about Se×ual reproduction here https://brainly.com/question/815744

Answer:

The reaction shifts to the left.

Explanation:

Equilibrium constant (K) = 46.3

Reaction Quotient (Q) = 525

The relationship between Q and K with their implications are given as;

K = Q (No net reaction)

K > Q (Reaction shifts to the right)

K < Q (Reaction shifts to the left)

Since in this question, Q (525) > K (46.3)

The reaction shifts to the left.

Answer:

zero order reaction

Explanation:

The seem to be a reaction is zero order as the data only fits to zero order integrated rate law.

Integrated rate law:

[A] = [A]_0 – kt

Here y = [ A] and slope is -k , so when we plot concentration of A with respect to t then we get the equation in the form of line

y = mx + c

So the answer Zero order in [A]

Answer:

[tex]\Delta H_{rxn}=-0.111 \frac{kJ}{mol}[/tex]

Explanation:

Hello!

In this case, since the total heat flow due to the reaction equals the negative of the calorimeter's heat, we can first compute the former as shown below:

[tex]Q_{rxn}=-C\Delta T\\\\Q_{rxn}=6.38\frac{J}{\°C}*3.2\°C=-20.416J[/tex]

Now, since this total heat flow due to the reaction is defined in terms of the heat of reaction and the total reacted moles:

[tex]Q_{rxn}=n*\Delta H_{rxn}[/tex]

Thus, we compute the moles in 8.5 g of ethanol:

[tex]n=8.5g*\frac{1mol}{46.08g}=0.185mol[/tex]

Therefore, the heat of reaction results:

[tex]\Delta H_{rxn}=\frac{Q_{rxn}}{n} =\frac{-20.416J}{0.185mol} =-110.7J/mol\\\\\Delta H_{rxn}=-0.111 \frac{kJ}{mol}[/tex]

Best regards!

Answer:

Explanation:

Explanation

Yes because it released the most amount of heat overall!!! well done xx