How many carbon atoms are represented by the model below?
A. 3
B. 2
C. 1
D. 4

Answer:

Adding or removing energy can change the physical matter.

Explanation:

Like for example changing temperature

Answer:

Explanation:

The metal is classified as a transition metal or transition element. In particular, this atom is Copper it has an atomic number of 29 which we know by the number of protons. The number of protons in an atom is the same as the atomic number.

Answer:

Copper

Explanation:

Each atom in the metal contains 29 protons.

Answer:

4

Explanation:

1N2 + 3H2  2NH3

Answer:

The molar concentration of base Cb = 14.2777M

Explanation:

Volume of acid Va = 38.70cm^3,

Concentration of acid NaO4 C_a= 1.90M

Volume of Base Vb = 10.30cm^3

Also, Equation of the reaction

H2SO4 + 2NaOH = Na2SO4 + 2H2O

No of mole of acid Na = 1

No of mole of base Nb = 2

CaVa/CbVb = Na/Nb

Cb = CaVaNb/VbNa

Cb = 1.9×38.7×2/(10.30×1)

Therefore, Cb = 14.2777M

The molar concentration of base Cb = 14.2777M

Answer:

Explanation:

When we say anything is a wave, what exactly do we mean? The most intuitive and straightforward wave to envision is a water wave. A motion, more specifically, is a disturbance that propagates or travels away from its source. Water waves are caused by a disruption in the water's surface, such as a rock tossed into a pond or a swimmer splashing the surface continuously. The noise for sound waves is a rise of air pressure, which may be caused by the oscillating cone within a speaker. There are many kinds of disturbances in earthquakes, including surface disturbances and pressure disturbances under the surface. Even radio signals are best deciphered by using a comparison of sea waves Water waves are helpful to visualize since they are more than just a mental picture. The amplitude, period, frequency, and energy of water waves are all the same as they are for all waves. A small set of underlying principles can be used to describe all wave characteristics.

(hope this helps can i plz have brainlist :D hehe)

Answer: Heat of reaction

Explanation:

Change in entropy is the difference between the entropy of products and the entropy of reactants.

 Heat of reaction is the energy released or absorbed during the course of the reaction. It is difference between the potential energy of the products and the potential energy of the reactants.

Activation energy is the extra energy that must be supplied to reactants in order to cross the energy barrier and thus convert to products.

Reaction complex is the short lived intermediate formed when reactants are coverted to products.

Answer:

electrons

galvanic

half-

electrode

Explanation:

I got it right :)

The words that complete each of the blanks in the question are;

A voltaic cell is one that produces energy by a sponteanous chemical reaction. A voltaic cell is a type of electrochemical cell.

The following are the words that complete the individual blanks';

Learn more about voltaic cell: https://brainly.com/question/14356798

Answer:

organism 1

Explanation:

the arrow points away from it so that means that it is being eaten and it always starts from a producer so organism 1 is likely a producer :)  

Answer:

The mass

Explanation:

the mass grams of 3.75 × 10 21 atoms of Li is

40. 21 atom of Li

Answer:

Umm I think it 2

Explanation:

Answer:

9. b

10.d

11.f

12.g

13.e

14.a

16.a

17.d

18.c

19.a

Explanation:

Answer:

the answer is a because if u have good wheather the panels will for no matter what

Answer:

V=0.430 Liters

Explanation:

First off you need to convert ml to l and celsius to kelvin, in order for them to be in the S.I.

So, 350.0mL is 0.350 L and 23.0 C is (273.15+23=) 296.15 K (you can ignore the 0.15)

From the equation pV=nRT, lets name this equation (1),  we can tell that the number of moles, pressure, and R, stay the same. The only thing changing is the volume, and temperature.

With the information given, let's figure out the pressure. From equation (1) if we solve it for the pressure of the gas, p=nRT/V => p=nR*296.15/0.350 => p=846.15 *nR

Now, we have to figure out the volume of the gas at 90.0 C (363.15 K), and solve equation (1) for volume, using the pressure we previously found.

v=nRT/p => v=nR*363.15/846.15*nR => (the nR's from top and bottom go away) v=0.429 L

Since we used 273.15 for the conversion of celsius to Kelvin, we could round up the number to

V=0.430 Liters

Answer:

Yes

Explanation:

Hydrofluoric acid (HF) differs from other acids because the fluoride ion readily penetrates the skin, causing destruction of deep tissue layers, including bone.

Answer:

have luster i think i dont know

Explanation:i need points

Answer:

[tex]pH=12.3\\\\pOH=1.7\\[/tex]

[tex][H^+]=5x10^{-13}M[/tex]

[tex][OH^-]=0.02M[/tex]

Explanation:

Hello there!

In this case, according to the given ionization of magnesium hydroxide, it is possible for us to set up the following reaction:

[tex]Mg(OH)_2(s)\rightleftharpoons Mg^{2+}(aq)+2OH^-(aq)[/tex]

Thus, since the ionization occurs at an extent of 1/3, we can set  up the following relationship:

[tex]\frac{1}{3} =\frac{x}{[Mg(OH)_2]}[/tex]

Thus, x for this problem is:

[tex]x=\frac{[Mg(OH)_2]}{3}=\frac{0.03M}{3}\\\\x= 0.01M[/tex]

Now, according to an ICE table, we have that:

[tex][OH^-]=2x=2*0.01M=0.02M[/tex]

Therefore, we can calculate the H^+, pH and pOH now:

[tex][H^+]=\frac{1x10^{-14}}{0.02}=5x10^{-13}M[/tex]

[tex]pH=-log(5x10^{-13})=12.3\\\\pOH=14-pH=14-12.3=1.7[/tex]

Best regards!

The number of moles present in 300 g of glucose is 1.7 moles or 2 moles approximately.

Explanation:

i did glucose cause i dont know what u meant by the S?

Answer:

e

Explanation:

and e

Answer:

solid goes on the first on and liquid goes on the sceond one

Answer:

The pH of a 0.10 Maqueous Ba(OH)2 solution at 25°C is 13.30

Explanation:

The balanced equation is Ba(OH)2(s)→Ba2++2OH−

This indicates that the concentration is 0.2 M

We will find H+ ion concentration

As we know that

[H+][OH−]=1.0×10−14M

Given -  

[OH−]=2.0×10−1M

Putting value of [OH-] in above equation we get -  

[H+]=5.0×10−14M

pH=−log10[H+]

pH=−log10[5.0×10−14] = 13.30.

Explanation:

¿Cuál es la carga compuesta para el fosfuro de Aluminum phosphide is a chemical compound with the formula AlP; Phosphine gas generator which is extremely toxic to any living being. estroncio?

Answer:

pressure ranges between 30 and 35 PSI

Explanation:

Answer:

1.08 atm

Explanation:

I hope you pass !!

Answer:  [tex]P_4O_{10}[/tex] is the limiting reagent

66.6 g of [tex]H_3PO_4[/tex] will be formed.

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]  [tex]\text{Moles of} P_4O_{10}=\frac{40g}{284g/mol}=0.14moles[/tex]

[tex]\text{Moles of} H_2O=\frac{30g}{18g/mol}=1.7moles[/tex]

[tex]P_4O_{10}+6H_2O\rightarrow 4H_3PO_4[/tex]  

According to stoichiometry :

1 mole of [tex]P_4O_{10}[/tex] require 6 moles of [tex]H_2O[/tex]

Thus 0.14 moles of [tex]P_4O_{10}[/tex] will require=[tex]\frac{6}{1}\times 0.14=0.84moles[/tex]  of [tex]H_2O[/tex]

Thus [tex]P_4O_{10}[/tex] is the limiting reagent as it limits the formation of product and [tex]H_2O[/tex] is the excess reagent.

As 1 mole of [tex]P_4O_{10}[/tex] give = 4 moles of [tex]H_3PO_4[/tex]

Thus 0.17 moles of [tex]P_4O_{10}[/tex] give =[tex]\frac{4}{1}\times 0.17=0.68moles[/tex]  of [tex]H_3PO_4[/tex]

Mass of [tex]H_3PO_4=moles\times {\text {Molar mass}}=0.68moles\times 98g/mol=66.6g[/tex]

Thus 66.6 g of [tex]H_3PO_4[/tex] will be formed.

Answer: b) Nitrogen trihydride should be the answer.

Explanation:

Nitrogen trihydride is the substance whose Lewis structure shows triple covalent bonds. Hence option is correct.

Covalent bonds are defined as the shared electron pair between two atoms that creates an interatomic bond. At room temperature, covalent compounds can be found in all three of their physical states and often have low boiling and melting temperatures. Covalent substances don't carry electricity.

Lewis structure are defined as a structural depiction of a molecule using lines or pairs of dots to represent covalent bonds between atoms and dots to show the locations of electrons surrounding the atoms. The goal of creating a Lewis dot structure is to locate lone electron pairs in molecules in order to better understand how chemical bonds are formed. In chemistry, a triple bond is a covalent connection where two atoms share three pairs of electrons, such as in the nitrogen molecule (N2) or the acetylene molecule (C2H2).

Thus, Nitrogen trihydride is the substance whose Lewis structure shows triple covalent bonds. Hence option is correct.

To learn more about Lewis structure, refer to the link below:

https://brainly.com/question/20300458

#SPJ6

Answer:

Lipids are divided into three categories.

Triglycerides, phospholipids, and sterols are the three major forms of lipids.

Answer:

nuclear power plants .....

Answer:

0.137 M NH3

Explanation:

First divide the mass of NH3 by the molar mass of NH3, and then divide by the volume to get molarity.

0.583 g / 17.031 g/mol = 0.0342 mol NH3

0.0342 mol NH3 / 0.250 L = 0.137 M NH3