A strong acid is one that

a Doesn’t easily dissociate into ions when I’m solution

B is very dilute in the solution

C easily dissociates into ions when I’m solution

d is very concentrated in the solution

Answer:

Kinetic energy = 1/2mv^2

8900 j =1/2*55*v^2

v^2=8900*2/55

v^2=323.6

v=17.98

Explanation:

In methane, the covalent bond is present between one carbon and four hydrogen atoms.

Methane is the simplest form of saturated hydrocarbons. Methane is an odorless gas as well as a colorless gas. It has one carbon and four hydrogen atoms which is why methane is also called a tetrahedral molecule.

CH₄ is the chemical formula of methane and is a non-toxic but flammable gas. From the tetrahedral structure of methane, we can see that a carbon atom is bonded to four hydrogen atoms.

One molecule of methane contains four covalent bonds. Each covalent bond is formed between the carbon and one hydrogen atom. The formation of a covalent bond between carbon and hydrogen is due to the small electronegativity difference between carbon and hydrogen.

In this way, carbon completes its octet and hydrogen completes its duplet. Therefore, the covalent bond is formed between one carbon atom bond with four hydrogen atoms in methane.

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#SPJ2

Answer: It's the circulatory system

Explanation:

assumed that all of the initial Mg had reacted, therefore the total amount of Mg had transferred into Mg2+ in MgCl2

Molar mass for Mg is 24.31 g/mole and MgCl2 is 95.21 g/mole

--> nMgCl2= nMg = 24.31 g ÷ 24.31 g/mole = 1 mole

--> so the mass of MgCl2 = 1 mole × 95.21 g/mole = 95.21 g

Answer:

nCaCO3 = 20/100 = 0,2 mol

CaCO3 --> CaO + CO2

0,2 ----------------> 0,2

nNaOH = 0,5.0,56 = 0,28 mol

=> T = nNaOH/nCO2 = 0,28/0,2 = 1,4

=> sản phẩm tạo ra bao gồm : Na2CO3 và NaHCO3

NaOH + CO2 --> NaHCO3

x -------> x --------> x

2NaOH + CO2 --> Na2CO3 + H2O

y ---------> 1/2y ---> 1/2y

ta có : nCO2 = nMuối = 0,2 mol

=> CmMuối = 0,2/0,5 = 0,4 M

Answer:

363C

Explanation:

V = KT  and T = V/K

3.5=k(35+273) = 308k

k=3.5/308 =0.011

new T=7.0/0.011=636K = 636-273 =363C

Answer:

nnhnhgnklhnhmkghklmfmg

Explanation:

cvgngh kcvl vl gkh kn hg

d= m/v

1.0=m/1cm^3

1.0×1cm^3=m

m=1kg/cm^3

Americans breathe less pollution and face lower risks of premature death and other serious health effects. Environmental damage from air pollution is reduced. The value of Clean Air Act health benefits far exceeds the costs of reducing pollution. ... New plants and factories install modern pollution control technology.

Answer:

i think it's freezing of permafrost. so sorry if it's wrong lol

Answer:

yes gold is pure

Explanation:

Answer

85

Explanation:

Astatine has an atomic number of 85.

This means it has 85 positively charged protons.

If it is neutral, it must have the same number of negatively  charged electrons, or 85

Answer:

In what state are particles spread farthest apart? Answer= Gas

How does thermal energy explain your answer to #2?

When something is hot and/or warm its moving fast like the steam u see on a cup of tea , it travels faster than any other state of matter.

Explanation:

hope i helped

Answer:

Temperature and Pressure

Explanation:

Temperature and pressure cause change in volume.

So any change in volume will alter the ratio of density as given by equation of density.

Density = mass/ volume

Change in volume will alter the ratio.

Kindly mark it branliest if the answer is little bit satisfying.

The two (2) factors which must be held constant for density to be a constant ratio are:

I. The temperature of a sample or physical substance.

II. The pressure around the sample or physical substance.

Density can be defined as mass all over the volume of of a sample or physical substance.

Basically, density is mass per unit volume of of a sample or physical substance.

Mathematically, the density of a of a sample or physical substance is given by the formula;

[tex]Density = \frac{Mass}{Volume}[/tex]

The density of a sample or physical substance is directly proportional to pressure and inversely proportional to temperature.

This ultimately implies that, an increase in pressure with temperature being constant would cause an increase in density and vice-versa.

Conversely, a decrease in temperature with pressure being constant would cause an increase in density and vice-versa.

In conclusion, a change in volume of a substance is caused by both temperature and pressure.

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Answer:

Boyles law

Explanation:

I think that is combined gas law.

Answer:

1 - B)    2 - B)     3 - A)

Explanation:

1. C3H8 + 5O2 → 3CO2 + xH2O.. Find 'X'.    

A) 3

B) 4

C) 5

D) 6

2. 4Al + 3O2 → xAl2O3. Find 'X'

A) 3

B) 2

C) 4

D) 5

3.  FeCl3 + 3NaOH → Fe(OH)3 + xNACl. Find 'x'

A)3

B) 4

C)5

D)6

More in Next Question...

Answer:

1.2

Explanation:

Answer:

Explanation:

Using the periodic table, complete the table to describe each atom. Type in your answers. - 14514242.

Answer:

production of antibodies

Answer:

C

Explanation:

The body will start to make antibodies to rid of the "invasion".

So the answer is C

Answer:

Using a hypothesis to sell a new product.

Answer:

Kim Sam Mi Da!!

Explanation:

Da Mi Sam Kim!!

Answer:

Yes it is

Explanation:

How else do you think nitrogen or oxygen is made?

Answer: 1.2544

Explanation:

if you look at the number 1 and 1 are the go to the next number 4 and 2 aren't so 1.44 is bigger while 1.2544 is smaller.

Answer:

1.2544

Explanation:

Explanation:

land.

I think it is the answer

Answer:

land .......................

Magnesium (group IIA) loses two electrons to become a cation. This is the most energetically favorable way for Magnesium to obtain a valence electron that is stable (octet). When an atom loses electrons it has a positive charge that matches the number of electrons lost.

Nitrogen (group VA) gains three electrons to become an anion. This is the most energetically favorable way for Nitrogen to obtain a valence electron that is stable (octet). When an atom gains electrons it has a negative charge that matches the number of electrons gained.

Answer:

I'm pretty sure it's they have different masses. I don't know though

Explanation:

Considering the reaction stoichiometry, the quantity of moles of H₂O produced is 3.02 moles.

The balanced reaction is:

CuO + H₂ → Cu + H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:  

The molar mass of the compounds present in the reaction is:

Then, by reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of mass of each compound participate in the reaction:  

Then, it is possible to determine the moles of H₂O necessary by the following rule of three:  If by reaction stoichiometry 79.55 grams of CuO produces 1 mole of H₂O, 240 grams of CuO produces how many moles of H₂O?

[tex]molesofH_{2} O=\frac{240 grams of CuOx 1 mole ofH_{2} O }{79.55 grams of CuO}[/tex]

moles of H₂O= 3.02 moles

Finally, the quantity of moles of H₂O produced is 3.02 moles.

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