10 points! Will mark brainliest!!

Answer: 7.81 mol HgO (How many moles of mercury(II) oxide, HgO, are needed to produce 125 g of oxygen, O2?)

Explanation:

Brainly is erroneously blocking my answer from being posted due to nonexistent profanity and/or links, so I have attached an image of my written response. Please let me know if you have any problems seeing it.

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:

1.66 M

Explanation:

Molarity = moles/L solution

We have the following data:

mass NaCl = m = 63 g

volume of solution = V = 0.65 L

Thus, we first convert the mass to moles with the molar mass of NaCl (MM):

MM(NaCl) = 23 g/mol Na + 35.4 g/mol Cl = 58.4 g/mol

moles NaCl = m/MM = 63 g/(58.4 g/mol)= 1.08 mol

Finally, we divide the moles into the volume of solution to calculate the molarity:

M = moles NaCl/V = 1.66 mol/L

Answer: it’s D

Explanation:an event that provokes a specific functional response in an organ or tissue of an organism is called as stimulus

hope it helps

Answer:  16.3 L of ammonia gas can be formed from 24.5 L of hydrogen gas at STP

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.

The balanced chemical equation is:

[tex]3H_2+N_2\rightarrow 2NH_3[/tex]

According to stoichiometry :

[tex]3\times 22.4=67.2L[/tex] of [tex]H_2[/tex]  produce = [tex]2\times 22.4=44.8L[/tex] of [tex]NH_3[/tex] at STP

Thus 24.5 L of [tex]H_2[/tex]  will produce= [tex]\frac{44.8}{67.2}\times 24.5=16.3L[/tex] of [tex]NH_3[/tex] at STP

Thus 16.3 L of ammonia gas can be formed from 24.5 L of hydrogen gas at STP

Answer:

substances

Explanation:

A chemical reaction happens when substances break apart or combine to form one or more new substances.

^Hope it helps, Hazel^

Answer:

yes

Explanation:

bc god exist

Answer:

3200

Explanation:

Answer:

44.8 L

Explanation:

Ideal Gas Equation -

i.e.,

PV = nRT

where,

P = pressure

V = volume

n = moles

R = universal gas constant

T = temperature

Using the information given in the question, Volume of the gas can be calculated -

P = 101.3 kPa

V = ?

n = 2.00 moles

R = 8.31

T = 0 degree C = 273.15 K

Using the above data, and putting the data in the respective formula -

PV = nRT

101.3 kPa * V = 2.00 moles * 8.31 * 273.15 K

V = 44.8 L

Hence, the volume of the given gas = 44.8 L

Answer:

i'm thinking 27.6 not sure

Explanation:

Answer:

Container 1 particles have lower average kinetic energy and higher temperature than Container 2 particles.

Explanation:

Kinetic energy is the speed of the particles in the bottle.

As you can see in the illustration below, the patricles in Picture 2 are moving faster than the ones in Picture 1.

The tempature of Container 1 is higher because all of the particles are sitting on top of one another. Not being able to move, their pressure builds up and creates heat.

Answer:

adding salt is like adding an impurity therefore the boiling point might increase from 100°c to maybe 102°c

The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus. In an uncharged atom, the atomic number is also equal to the number of electrons.

Answer:

its basically represents the number of protons in the nucleus which in a neutral atom equals the number of electrons outside the nucleus and that determines the place of the element in the periodic table

Explanation:

sry i its too long

hope it helps

Answer:

Explanation:

3Pb(ii)(NO3)2 + 2Fe(iii) ( C2H3O2 )3   ===> 3Pb( C2H3O2)2 + 2Fe(NO3)3

I know you have likely been given this as a homework assignment, but in real life I doubt you would be able to see any reaction taking place. The products are likely both soluble and both ionize, so I don't think you will get any kind of reaction taking place.

The equation however is balanced.

Sulfur dioxide is used as a food preservative, disinfectant, etc.

Answer:

V = 0.798 L

Explanation:

Hello there!

In this case, for this gas stoichiometry problem, we first need to compute the moles of carbon dioxide via stoichiometry and the molar mass of starting calcium carbonate:

[tex]3.56gCaCO_3*\frac{1molCaCO_3}{100gCaCO_3} *\frac{1molCO_2}{1molCaCO_3} =0.0356molCO_2[/tex]

Next, we use the ideal gas equation for computing the volume, by bearing to mind that the STP conditions stand for a pressure of 1 atm and a temperature of 273.15 K:

[tex]PV=nRT\\\\V=\frac{nRT}{P}\\\\V=\frac{0.0356mol*0.08206\frac{atm*L}{mol*K}*273.15K}{1atm} \\\\V=0.798L[/tex]

Best regards!

Answer: chromosome

Explanation: :)

Answer:

they are all in parts of our life and we need them each for surviving.

Explanation:

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:

C

Explanation:

Weak acids dissociate only slightly in an aqueous solution. The majority of molecules remain undissociated.

Based on how to wrire chemical formulae, the formula for chlorine monobromide is BrCl.

Chlorine monobromide is a covalent compound formed from the covalent combination of chlorine and bromine.

The covalent bond is formed from the sharing of electrons between atoms chlorine and bromine.

Br2 + Cl2 ---> 2 BrCl

Tye formula of chlorinr monobromide is BrCl.

It is also known as bromine monochloride.

Therefore, the formula for chlorine monobromide is BrCl.

Learn more about chemical formula at: https://brainly.com/question/2778716

Hello! Greetings from Turkey! :)

* Cell membrane

* Cytoplasm

* DNA and RNA

* Ribosome

                                                                                                     GOOD LUCK!!

Answer:

Ver explicacion

Explanation:

Un arroz con leche es una mezcla heterogénea porque está compuesto por partículas sólidas de diferentes tipos y tamaños.

El agua de mar es una mezcla homogénea de sustancias todas en la misma fase.

El magnesio es una sustancia pura y es un elemento.

La gasolina es una mezcla homogénea de sustancias comúnmente utilizadas como combustible.

Answer:

rn4y8rg7348y0rp934nrf3

efjewhrf8h934hfr84398wgfyu8o

Explanation:

fe8u34h4n3urhu93q4pirnpqr34uwbry8439br8u3i2rpi34ofreuebue rf ef erf3rw  wg

Answer:

With the policies of containment, the United States hoped to effectively stop the spread of communism and their newest threat. After the war, the United States and the Soviet Union had very different ideas on how to rebuild.

Answer:

I feel like the answer is A) true

Explanation:

you create a model to help your audience understand your complex idea. There have been models made to represent ideas that we cannot see.