what is the molarity of 2.0 L of a solution made from 2.4 moles of NaCl and water?

Answer:

Milk's boiling temperature is nearly identical to that of water, 100 degrees Celsius (212 degrees Fahrenheit)

Explanation:

Let's check

[tex]\\ \rm\Rrightarrow C_4H_{2(4)-2}[/tex]

[tex]\\ \rm\Rrightarrow C_4H_{8-2}[/tex]

[tex]\\ \rm\Rrightarrow C_4H_6[/tex]

So

Option B

Now

Done!

We know

[tex]\boxed{\sf 1atm=760mmHg}[/tex]

So convert now

Answer:

active carriers

Explanation:

Mosquitoes are responsible for transmitting the zika virus. In this case, the mosquitoes are active carriers

Answer:

E -- active carriers

Explanation:

the mosquitos would be active carriers...

Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Also remember to rate answers to help other students, While leaving thanks to answers that help you. Have a great day!

Explanation:

D mole is a power. .......

[NOBr]2/[NO]2[Br2] is the equilibrium expression for 2NO+Br2⇌2NOBr. Therefore, the correct option is option D.

When the observable qualities, such as colour, pressure, temperature, concentration, etc. do not vary, the process is said to be in equilibrium. As "balance" is the definition of the word "equilibrium," it follows because a chemical reaction reflects a balance among the substances and outcomes involved in the reaction.

In some physical processes, such as the melting of ice at 0°C, where both the two substances are present at equilibrium, the equilibrium state can also be observed. Physical equilibrium refers to the equilibrium that results from physical processes like the melting of solids.  [NOBr]2/[NO]2[Br2] is the equilibrium expression for 2NO+Br2⇌2NOBr.

Therefore, the correct option is option D.

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Answer:

a. .125 mol b. 7.25g

Explanation:

a. To get the moles multiply the volume by the molarity.

.5L*.25M=.125mol NaCl

b. The molar mass is provided so multiply the moles by the molar mass to get the amount of grams of nacl.

.125mol*58molar mass=7.25g nacl to make the solution

Answer:

22.11 atm

Explanation:

Use the ideal gas law PV=nRT

P(100)=88(.08)(314)

100P=2210.56

P=22.11 atm

Answer

Electromagnetic waves.

Explanation: Waves that Move through matter only are called Mechanical waves. Waves that move through space only are called electromagnetic waves.

Bitter taste, high pH, and caustic Bitter are the characteristics of base.

Bases have bitter taste, soapy feel, turn red litmus paper blue. Bases are substances that contain metal oxides or hydroxides. Its pH is higher than 7 up to 14.

So we can conclude that bitter taste, high pH, and caustic Bitter are the characteristics of base.

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Answer:

Bitter taste, high pH, and caustic

Explanation:

I took the test :)

Taking into account the reaction stoichiometry, f 66.38 g of potassium chloride reacts with fluorine and produces potassium fluoride and chlorine, 0.4452 moles of chlorine is produced.

In first place, the balanced reaction is:

2 KCl + F₂ → 2 KF + Cl₂

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 is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: if by reaction stoichiometry 149.1 grams of KCl form 1 mole of Cl₂, 66.38 grams of KCl form how many moles of Cl₂?

[tex]amount of moles of Cl_{2} =\frac{66.38 grams of KClx1 mole of Cl_{2}}{149.1 grams of KCl}[/tex]

amount of moles of Cl₂= 0.4452 moles

Then, if 66.38 g of potassium chloride reacts with fluorine and produces potassium fluoride and chlorine, 0.4452 moles of chlorine is produced.

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Answer:

Dispersion forces are present between all molecules, whether they are polar or nonpolar. Larger and heavier atoms and molecules exhibit stronger dispersion forces than smaller and lighter ones.

Explanation:

hope this helps

Answer:

Both are continental shelf's.

Explanation:

A continental shelf is the shallow underwater extension of land surrounding a continent. It makes up the edge of a landmass, even though it is under water. At some points in the Earth's past, many underwater continental shelves were once a part of dry land.

Based on the chemical equation, to balance the equation we use 2 as a coefficients of HCl on left hand side of reaction.

Balanced chemical equations are those equation in which each entities are present in same amount on left side as well as on the right side of the chemical reaction.

Given chemical reaction is:

Zn + HCl → ZnCl₂ + H₂

Above reaction is not balanced equation as number of chlorine and hydrogen atoms are not same, so balanced equation will be:

Zn + 2HCl → ZnCl₂ + H₂

Hence we add 2 as a coefficient of HCl to balance the equation.

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Answer:

1 2 1 1

Explanation:

im yes hi okay no bye

Answer:

a. BH₃

Explanation:

According to the octet rules, atoms reach stability when are surrounded by eight electrons in their valence shell when they combine to form a chemical compound.

From the options, the only compound in which the central atom does not meet the octet rules is BH₃. The central atom is boron (B), which has 3 electrons in its valence shell. When B is combined with hydrogen (H), 3 electrons from the 3 atoms of H are added. The total amount of electrons is 6, fewer than 8 electrons needed to meet the rule.

hope this helps

Answer:The mass of each planet is less than that of the Sun, so they all orbit the Sun.

Explanation:

The reaction equation is:

HI(aq) + KOH(aq) → KI(aq) + H2O

1 mol HI reacts with 1 mol KOH

In your problem you have:

Mol HI in 10 mL of 1M solution = 10mL/ 1000 mL/L * 1 mol /L = 0.01 mol HI

Mol KOH in 5 mL of 1 M solution = 5 mL / 1000 mL/L * 1 mol /L = 0.005 mol HI

The 0.005 mol of KOH will neutralise 0.005 mol of HI - leaving 0.005 mol HI unreacted in 15 mL solution

This solution will be acidic

I guess that that answers your question - But you may be interested in calculating the pH of the solution

Have a great day!

Based on the information provided and the assumption that the mole ratio of the acid to the base is 1:1, the molarity of the acid would be 0.0425 M

Using the equation:

CaVa = CbVb

This is based on the assumption that the stoichiometric mole ratio of the acid to the base is 1:1.

Ca = CbVb/Va

                   0.1 x 25.5/60 = 0.0425 M

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Answer:

461.91 Kelvin

Explanation:

P = 7.30 atm

V = 21.7 liters

n = 4.15 moles

R = 0.0821 atm

T = ?

PV = nRT

(7.30) (21.7) = (4.15) (0.0821) (T)

158.41 = 0.34 (T)

T = 465.91 Kelvin

Answer:

The law of conservation of matter says that matter cannot be created or destroyed.

Explanation:

Answer:

Atoms don’t appear or disappear during the reaction. Instead, they get rearranged.

Explanation:

Edmentum answer

The fraction of parafin wax and asaphalt is diesel oil

Fractional distillation is the process by which crude oil are separated in to different form base on their molecular weight and boiling points by petroleum refineries .

parafin wax and asaphalt is use for making roads and candles.

Therefore, The fraction of parafin wax and asaphalt is diesel oil.

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Answer:

molting allows for this adaptaion.

its fur slowly changes color

thanks!

Explanation:

Answer:

The differences between the Florida's weasel and in Wyoming's is that I can see that in Wyoming it has a lot of snow so Wyoming's weasel fur is more thicker than Florida's weasel.

Explanation:

Overmore, in Florida's weasel the weasel's fur is much more less then Wyoming's weasel's fur. Subsequently, their fur color is very different. In Wyoming's weasel fur, it's white fur help them blend in the snow. In Florida's weasel fur, it's brown and help blend in the grass(soil).

Explanation:

Answer:

Barium is lower in group 2 than magnesium, so number of shells increase. The valence electron is further from the nucleus making it easier to lose electrons.

Explanation:

Barium has more electrons shells than calcium, so the nuclear shielding is stronger, and the outmost electrons are further away from the nucleus. This results in a weaker attractive force between the electron and the nucleus, so a smaller energy is required to remove it.

Answer:

Barium has a greater radius than magnesium

Explanation:

Barium and magnesium are two elements which belong to the same group, group 2A. This means that the two elements have two valence electrons in their outer shell.

The difference is, however, since barium

is lower in group than magnesium, it has

more electron shells than magnesium and,

therefore, its radlus is greater. The attraction

force between the nucleus and the valence

electrons in barium is lower as a result, as force

is inversely proportional to distance. Hence, a

lower amount of energy is required to remove

the valence electrons from barium.

Explanation:

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The quantity of floor needed by the Isaac for making the cake will be equal to 165.844575 gram

Unit conversion is a multi-step process that involves multiplication or division by a numerical factor, selection of the correct number of significant digits, and rounding.

Given that

1 oz =28.3495 gram

Therefore 5.85 oz will give x gram

X gram is what we are looking for

X gram= 5.85 oz× 28.3495g/1

Xg= 165.844575 gram

Approximately 165.8446 gram

Thus, Isaac needs to add 165.8446g of flour to the mixture to make 5.85 oz

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Decay of Uranium-238 produces gamma radiaton whereas decay of thorium-234 releases beta radiation.

In the decay of U-238, two gamma rays of different energies are emitted in addition to the alpha particle while on the other hand, in the decay of thorium-234 , beta rays are emitted.

So we can conclude that decay of Uranium-238 produces gamma radiaton whereas decay of thorium-234 releases beta radiation.

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Answer:

Yes its

C. During the radioactive decay, alpha particles are released. These positive particles are attracted to the negative plate in the electric field.

Explanation:

Just got it right on USATP

Answer:

A

Explanation:

HCl and NaOH is a strong acid and strong base, respectively, and hence dissociates completely and reacts to form water:

[tex]\displaystyle \text{H}_\text{(aq)}^+ + \text{OH}_\text{(aq)}^- \longrightarrow \text{H$_2$O}_\text{($\ell$)}[/tex]

We are given that 25.0 mL of 0.333 M NaOH was used to neutralize 15.0 mL of HCl.

Convert from moles of NaOH used to moles of HCl reacted:
[tex]\displaystyle \begin{aligned} 25.0\text{ mL} & \cdot \frac{0.333\text{ mol NaOH}}{1\text{ L}} \cdot \frac{1\text{ L}}{1000\text{ mL}} \cdot \frac{1\text{ mol OH}^-}{1\text{ mol NaOH}}\cdot \\ \\ & \cdot\frac{1\text{ mol H}^+}{1\text{ mol OH}^-} \cdot \frac{1\text{ mol HCl}}{1\text{ mol H}^+}\\ \\ & = 8.33\times 10^{-3}\text{ mol HCl}\end{aligned}[/tex]

Therefore, the molarity of the original HCl solution is:
[tex]\displaystyle \begin{aligned} \ [\text{HCl}] & = \frac{\text{ mol HCl}}{\text{L soln.}} \\ \\ & =\frac{8.33\times 10^{-3}\text{ mol HCl}}{15.0\text{ mL}} \cdot \frac{1000\text{ mL}}{1\text{ L}} \\ \\ & = 0.555\text{ M}\end{aligned}[/tex]

In conclusion, our answer is A.

The correct equilibrium constant expression for the given chemical reaction is Keq = [Cu²⁺] / [Ag⁺]².

Equilibrium constant of any reaction at the equilibrium state will be define as the ratio of the concentration of products to the concentration of the reactants.

Given chemical reaction is:

Cu(s) + 2Ag⁺(aq) ⇄ Cu²⁺(aq) + 2Ag(s)

Equilibrium constant for the above reaction will be written as:

Keq = [Cu²⁺][Ag]² / [Cu][Ag⁺]²

But in the above reaction at the product side silver is present in pure solid form and at the reactant side copper is present in pure solid form and concentration of these elements equals to one in equilibrium state, so that equation becomes:

Keq = [Cu²⁺] / [Ag⁺]²

Hence equilibrium expression for given reaction is Keq = [Cu²⁺] / [Ag⁺]².

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Answer: D

Keq = [Cu²⁺] / [Ag⁺]²