CHEMISTRY HIGH SCHOOL

Driving cars lowers the pH of the oceans by _______.a.
releasing CO2 that dissolves and forms acid in the oceans
b.
releasing pollutants that lead to smog
c.
releasing CO that dissolves and forms acid in the oceans
d.
releasing pollutants that lead to acid rain

Answers

Answer 1
Answer:

Answer: Option (a) is the correct answer.

Explanation:

When CO_(2) is released from driving cars, some of which is absorbed by the plants but the rest of CO_(2) reacts with the sea or ocean water.

It reacts with water molecules and changes the chemistry of ocean water by lowering its pH. As it is known that when pH becomes lower then the substance becomes acidic in nature.

Thus, we can conclude that driving cars lowers the pH of the oceans by releasing CO_(2) that dissolves and forms acid in the oceans.
Answer 2
Answer: A) releasing CO2 that dissolves and forms acid in the oceans (i think i'm sorry if its wrong)

Related Questions

Which of these statements best explains why the soil around a volcanic region is fertile? Select one: a. Volcanoes always contribute to flooding, which enriches the soil. b. Volcanoes aid in the formation of new rocks, which help form fertile soil. c. Particles released in the air by volcanoes fall to the ground and enrich the soil.
The volume of a gas is 450 mL when its pressure is 1.00 atm. If the temperature of the gas does not change, what is the pressure when its volume is changed to 2.00 L?
Express the answer in scientific notation and with the correct number of significant figures: (6.32 x 10-4) ÷ 12.64
A chemical equation is shown below.CH4 + Cl2 → CCl4 + HCl What are the coefficients that should be added to balance this equation? Use complete sentences to explain your answer. Explain how this chemical reaction demonstrates the conservation of mass.
Iron in the form of fine wire burns in oxygen to form iron (III) oxide. Write the balanced chemical equation.

A build up of electric charge on an object

Answers

Static electricity is build up of electrical charges on the surface of some object materials.

Static electricity just did the test

The reaction between NaOH(aq) and H2SO4(aq) was studied in a constant-pressure calorimeter: 100.0 mL portions of 1.00 M aqueous NaOH and H2SO4, each at 24.0C, were mixed. The volume of the mixture was 200.0 mL. The maximum temperature achieved was 30.6C. Neglect the heat capacity of the calorimeter and the thermometer, and assume that the solution of products has a density of 1.00 g/mL and a specific heat capacity of 4.18 J/(g·K). Calculate H, the heat (enthalpy) of reaction, in kJ per mole of acid. (Hint: You may not have the equivalent amounts of NaOH and H2SO4 in this experiment.)

Answers

Answer:

110,4 kJ / mole of acid

Explanation:

The reaction of NaOH with H₂SO₄ is:

2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

Moles of NaOH and H₂SO₄ are:

0,1000L×1,00M = 0,100 moles of NaOH and 0,100 moles of H₂SO₄. As 2 moles of NaOH reacts with 1 mole of  H₂SO₄, moles of acid that react are 0,100/2 = 0,0500moles of acid.

The produced heat is:

Q = C×m×ΔT

Where C is specific heat capacity (4,18J/gK)

m is mass: 200,0mL×(1,00g/mL) = 200g

ΔT is change in temperature: 30,6°C - 24,0°C = 6,6°C = 6,6K

Thus, Q is:

Q = 4,18J/gK×200g×6,6K

Q = 5518J = 5,52kJ

ΔH in kJ per mole of acid:

5,52kJ / 0,0500moles of acid = 110,4 kJ / mole of acid

I hope it helps!

2. What mass of sodium chloride is produced when chlorine gas reacts with 2.29 grams of sodium iodide? The unbalanced equation is given below: Nal (s) + Cl, (g) → NaCl (s) + 1, (g)​

Answers

Answer:

0.88g

Explanation:

The reaction equation:

         2NaI  + Cl₂   →    2NaCl  + I₂

Given parameters:

Mass of Sodium iodide = 2.29g

Unknown:

Mass of NaCl = ?

Solution:

To solve this problem, we work from the known to the unknown.

First find the number of NaI from the mass given;

   Number of moles  = (mass)/(molar mass)  

          Molar mass of NaI  = 23 + 126.9  = 149.9g/mol

 Now insert the parameters and solve;

     Number of moles  = (2.29)/(149.9)   = 0.015mol

So;

 From the balanced reaction equation;

            2 moles of NaI produced 2 moles of NaCl

          0.015mole of NaI will produce 0.015mole of NaCl

Therefore;

      Mass  = number of moles x molar mass

      Molar mass of NaCl = 23 + 35.5  = 58.5g/mol

Now;

      Mass of NaCl  = 0.015 x 58.5  = 0.88g

The average atomic mass of oxygen is 15.9994 amu. The atomic masses of its three isotopes are as follows: O-16: 15.995 amu; O-17: 16.999 amu; O-18: 17.999 amu Which isotope is most likely to have the greatest abundance in nature?

Answers

Answer:

O-16 isotope is most likely to have the greatest abundance in nature.

Explanation:

Atomic mass of an isotopes of oxygen elements:

  • O-16: 15.995 amu
  • O-17: 16.999 amu
  • O-18: 17.999 amu

Average atomic mass of an oxygen atom = 15.994 amu

Isotope with the value of atomic mass closest to the average atomic mass of the oxygen atom will have the greatest abundance in nature. As it will be found in much more greater extent in nature.

Where as isotope which is least close to the average atomic mass will have less abundance in nature.

O-16 isotope is most likely to have the greatest abundance in nature.

15.995 amu ≈ 15.994 amu

Which factor is generally responsible for high melting points?

Answers

Strong intermolecular ion-ion forces are responsible for high melting points. Thus the solid state requires close proximity and high order to have high melting point. Hope this answer helps. Good luck!

Answer;

Intermolecular forces.

Explanation;

  • Melting point is the temperature at which a solid melts or a solid changes to a liquid.  In liquids melting point is similar to the freezing point.
  • Melting point of a substance depends on the molecular composition, force of attraction between molecules and also the presence of impurities.
  • A strong force of attraction between molecules results in a higher melting point. Such that stronger intermolecular forces results to a higher melting point.
  • For example, the melting point of ionic compounds is higher due to the strong electrostatic forces joining ions.

Which definitions of acids can apply to substances?

Answers

*Acids taste sour. The lemon, vinegar, tamarind contain acids; that's why they are sour.

*The acids change the color of certain substances called indicators. The indicators have the property of changing color as the character acid or basic solutions. The litmus and phenolphthalein are indicators of acids and bases. The solution of phenolphthalein is colorless red in the presence of an acid. Already the blue litmus paper turns red.

*The acids react with bases to form salts and water. This reaction is called neutralization reaction.
hope this helps!
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