Which of the following describes a characteristic of water that makes it cohesive in nature?
O It is a non-polar molecule with weak hydrogen boding.
O It has a linear molecular structure with H-O-H arranged in a straight line.
O It has a huge electronegativity difference between its atoms.
O It requires a high amount of heat to raise or drop its temperature.

Answer:

a chemical reaction occured

Explanation:

bubbling and fizzing after adding a substance, most offten means a chemical reaction is happening

Answer:

equation (D) is not balanced

balanced

2NaCl + H2SO4 —> Na2SO4 + 2HCl

The chemical equation not balanced is:

NaCl  +  H₂SO₄  →  Na₂SO₄  +  HCI

A chemical equation can be described as the reactants involved in the reaction, products produced, and an arrow denoting the direction of the chemical reaction. The chemical equation is a way to represent the chemical reaction in a short way.

A balanced equation in which the number of atoms of each element is equal on both sides of the chemical equation.

The law of conservation of mass is needed to follow while balancing the equation. The total mass of the elements on both sides (reactant and product side) in a balanced chemical equation.

NaCl  +  H₂SO₄  →  Na₂SO₄  +  HCI is not a balanced chemical equation as the number of hydrogen and sodium on both sides. The balanced chemical equation will be:

2 NaCl  +  H₂SO₄  →  Na₂SO₄  + 2 HCI

Learn more about the balanced chemical equation, here:

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1. Closest

2. Million

3. All

4. Sunlight

5. Heat

6. Are

7. Faster

8. Million billion

9. Protection

10. Moon

11. Never

12. Tiny

13. Living

14. Explosions

15. Solar

Have a nice day!

Answer:

1. Closest

2. Million

3. All

4. Sunlight

5. Heat

6. Are

7. Faster

8. Million billion

9. Protection

10. Moon

11. Never

12. Tiny

13. Living

14. Explosions

15. Solar

give the other person brainliest

have a good day :)

Explanation:

Answer:

0.716

Explanation:

First, write the balanced equation:

3 H2CO3 + 2 Fe(OH)3 ----> Fe2(CO3)3 + 6 H2O

Second, go from the molarity of H2CO3 to liters of Fe(OH)3

(Pull mole ratio from balanced equation)

1.22/1L  x  0.0880/1  x  3molH2CO3/2molFe(OH)3 x 1/0.225L

Use calculator, and you end up with 0.7157333

Round to 0.716

Answer:

c

Explanation:

yxyyyxyxxyxxy yy y gg ff ff d d f t r rr rr rr rr r r t tt t

Answer:

all of the above

Explanation:

Answer:

All of the above

Explanation:

Prior to the montreal CFC production ban, all of these products released CFCs into the atmosphere. Some old air conditioner still release CFC so please be sure to dispose of them as CFC kills the ozone layer.

Answer:

0.25 liter

Explanation:

Trust

Answer:

0.375 mols

Explanation:

mol:mass

1 : 44

x :16.5

cross multiply and get the answer

Answer:

Pistil

Explanation:

I believe it is the pistil, because the pistil is part of the female reproductive system of a flower. A stamen is for the male reproductive system.

Answer:

is this done on a chrombook? it looks like it pls i need points to get to 1000 points so please just leave my answer

Explanation:

Answer:

I believe its F: 2.55

Explanation:

I know I'm very late, positive you're past this question, I'd hope at least.

Answer:

The electric force between them decreases

Explanation:

The force between two charged particle is given by :

[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]

Where

r is the distance between charges

If the distance between the charges is increased, the electric force gets decreased as there is an inverse relation between force and distance.

Hence, the correct option is (c) "The electric force between them decreases"

Answer:

I think the w/w% of this question is 10.

The w/w% of a solution that contains 10 grams of solute and 100 grams of solvent is 9.09%

Mass percentage is another name of w/w % or weight /weight % .

To determine the weight/weight % of a solution :

we divide the mass of solute by mass of the solution (solute and solvent together) and multiply by 100 to obtain per cent.

[tex]\dfrac{w}{w} \; \%\; =\;\rm\dfrac{mass \;of\; solute}{mass\; of \; solute\;+\;mass\;of\;solvent} \times 100[/tex]

It is given that , mass of solute = 10 grams and mass of solvent = 100 grams

So,

[tex]\dfrac{w}{w} \; \%\; =\;\rm\dfrac{10}{10+100} \times 100[/tex]

[tex]\dfrac{w}{w} \; \%\; =\;\rm\dfrac{10}{110} \times 100\\\\\dfrac{w}{w} \; \%\; =\;\rm\dfrac{100}{11}\\\\\dfrac{w}{w} \; \%\; =\; 9.09 \;\%[/tex]

The w/w% of a solution that contains 10 grams of solute and 100 grams of solvent is 9.09% .

To know more about mass percentage :

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the answer would be 150 m because you just add 60 and 90

Answer: Tires air condenses and when it condenses it takes up less room.

Explanation: Hope that helps!

Answer:

2.96 x 10^-19 J

Explanation:

I just took the test

Answer:

1.8 L

Explanation:

According to Avogadro;

1 mole of CH4 contains 6.02 * 10^23 molecules of CH4

x moles of CH4 contains 2.50 x 10^22 molecules of CH4

x = 1 * 2.50 x 10^22 molecules/ 6.02 * 10^23 molecules

x = 0.04 moles of CH4

2 moles of H2 yields 1 mole of CH4 gas

x moles of H2 gas yields  0.04 moles of CH4

x = 2 moles * 0.04 moles / 1mole = 0.08 moles of H2

x = 0.08 moles of H2

Since 1 mole of H2 occupies 22.4 L

0.08 moles of H2 occupies 0.08 moles * 22.4 L/ 1 mole

= 1.8 L

Answer:

The answer to your question is B

Answer:

C. 9.70

Explanation:

Hello,

This problem is a simple dilution problem which utilizes the formula M1V1= M2V2 (where M is molarity, V is volume). I have attached a helpful image as well.

M1 V1 = M2 V2

(18) (x) = (0.35) (500)

x = 9.72mL which is close enough to option C.

Explanation:

Sodium Chloride or NaCl is made up of two elements, sodium (or Na) and chlorine (or Cl). A molecule of sodium chloride, NaCl, consists of one atom each of sodium and chlorine. Hence, each molecule of NaCl has 2 atoms total.

Answer:

C Region

Explanation:

C Region contains all the liquids as 0 °C is the freezing point of water (Crystals of water are formed leaving it no more in the liquid state) and 100 °C is the boiling point (The water boils leaving it no more in the liquid state).

Hence, All liquids are contained in the C region.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

15.5 moles

Explanation:

Applying,

PV = nRT.................. Equation 1

Where P = pressure, V = Volume, n = number of mole, R = molar gas constant, T = Temperature.

Make n the subject of the equation

n = PV/RT............... Equation 2

From the question,

Given: P = 0.899 atm, V = 425 L, T = 24 °C = (273+24) K = 297 K.

Constant: R = 0.083 L.atm/K.mol

Substitute these values into equation 2

n = (0.899×425)/(297×0.083)

n = 15.5 moles

Answer:

Im pretty sure you use mass

Explanation:

Answer:

Los químicos eligen definir la AMU como 1/16 de la masa promedio de un átomo de oxígeno que se encuentra en la naturaleza; es decir, el promedio de las masas de los isótopos conocidos, ponderado por su abundancia natural. Los físicos, por otro lado, lo definieron como 1/16 de la masa de un átomo del isótopo oxígeno-16 (16O).

Answer:b

Explanation:

Correct dot

Answer: Pressure of the gas in the tank is 9.8 atm.

Explanation:

Given: Moles = 2.0 moles,     Volume = 5.0 L

Temperature = [tex]25^{o}C = (25 + 273) K = 298 K[/tex]

Formula used to calculate pressure is as follows.

PV = nRT

where,

P = pressure

V = volume

n = no. of moles

R = gas constant = 0.0821 L atm/mol K

T = temperature

Substitute the values into above formula as follows.

[tex]PV = nRT\\P \times 5.0 L = 2.0 mol \times 0.0821 L atm/mol K \times 298 K\\P = \frac{2.0 mol \times 0.0821 L atm/mol K \times 298 K}{5.0 L}\\= 9.8 atm[/tex]

Thus, we can conclude that pressure of the gas in the tank is 9.8 atm.

Answer:

A) 3.115 mol

B) 11.60 g h2

Explanation:

From the equation

2 mol Li gives 1 mol H2

Then 6.23 gives??

6.23 /2 = 3.116 mol H2

B) moles of Li =mass! molar mass

= 80.57/ 6.941 = 11.6 mol Li

Then moles of H2 = 11.6 /2 = 5.8 mol H2

Mass of H2 = mol * molar mass

5.8*2 =11.6 g h2

The moles of hydrogen formed with 6.23 moles of Li have been 3.115 moles. The mass of hydrogen formed with 80.57 grams of Li has been 11.60 grams.

From the balanced chemical equation,

2 moles Li = 1 mole Hydrogen

(a) The given moles of Li = 6.23 mol .

6.23 mol of Li = [tex]\rm \dfrac{1}{2}\;\times\;6.23[/tex] moles of hydrogen

6.23 mol Li = 3.115 moles of hydrogen.

The moles of hydrogen formed with 6.23 moles of Li have been 3.115 moles.

(b) The moles can be expressed as:

Moles = [tex]\rm \dfrac{weight}{molecular\;weight}[/tex]

Moles of Li in 80.57 grams:

Moles of Li = [tex]\rm \dfrac{80.57}{6.941}[/tex]

Moles of Li = 11.60 moles

The amount of Hydrogen formed:

2 moles Li = 1 mole Hydrogen

11.60 mol of Li = [tex]\rm \dfrac{1}{2}\;\times\;11.60[/tex] moles of hydrogen

11.60 mol Li = 5.803 moles of hydrogen.

Mass =  moles × molecular mass

Mass of 5.803 moles of Hydrogen = 5.803 × 2

Mass of hydrogen = 11.60 grams

The mass of hydrogen formed with 80.57 grams of Li has been 11.60 grams.

For more information about the moles formed, refer to the link:

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Answer:

2.5

Explanation:

From the question given above, the following data were obtained:

Molarity of NaOH = 3.0x10¯³ M

pOH =?

Next, we shall determine the concentration of the hydroxide ion in the solution. This can be obtained as follow:

NaOH (aq) —> Na⁺ (aq) + OH¯ (aq)

From the balanced equation above,

1 mole of NaOH produced 1 mole of OH¯.

Therefore, 3.0x10¯³ M NaOH will also produce 3.0x10¯³ M OH¯.

Finally, we shall determine the pOH of the solution. This can be obtained as illustrated below:

Concentration of hydroxide ion [OH¯] = 3.0x10¯³ M

pOH =?

pOH = – Log [OH¯]

pOH = – Log 3.0x10¯³

pOH = 2.5

Thus, the pOH of the solution is 2.5

Answer:

Low-pressure system and clear weather.

Explanation: