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Novosadov [1.4K]
3 years ago
11

Which of these statements best explains why the ocean currents in the Northern hemisphere tend to move in the clock-wise directi

on? (2 points) Question 14 options: 1) The currents deflect to the right due to the rotation of Earth. 2) The change in gravitational forces causes currents to move towards right. 3) The deflection of winds to the left causes the currents to move in the opposite direction. 4) The altered wind speed due to Earth's rotation causes the movement of ocean water.Which of these statements best explains why the ocean currents in the Northern hemisphere tend to move in the clock-wise direction? (2 points) Question 14 options: 1) The currents deflect to the right due to the rotation of Earth. 2) The change in gravitational forces causes currents to move towards right. 3) The deflection of winds to the left causes the currents to move in the opposite direction. 4) The altered wind speed due to Earth's rotation causes the movement of ocean water.
Chemistry
1 answer:
Evgesh-ka [11]3 years ago
6 0

Answer: Option (1) is the correct option that is currents deflect to the right due to the rotation of Earth.

Explanation:

The water on the surface of ocean is moved by winds that blow in certain direction because of the Coriolis effect and spinning of the Earth that's why ocean currents in the Northern hemisphere tend to move in the clock-wise direction.

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The reaction between carbon tetrachloride, CCl4, and water, H2O, to form carbon dioxide, CO2, and hydrogen chloride, HCl, has a
Ber [7]

Answer:

1) a) It is a slow reaction kinetically.

2) a) It is a catalyst.

3) c) It lowered the activation energy of the reaction.

Explanation:

<em>1) The reaction between carbon tetrachloride, CCl₄, and water, H₂O, to form carbon dioxide, CO₂, and hydrogen chloride, HCl, has a ΔG° value of -232 kJ/mole, and so is thermodynamically favored. But when you mix carbon tetrachloride with water, no change is observed. What is a possible explanation for this? </em>

<em>a) It is a slow reaction kinetically.</em>  TRUE. This is the most likely explanation of why no change is observed.

<em>b) The activation energy of the reaction is too small.</em>  FALSE. Slow reactions have a large activation energy.

<em>c) The reaction is not spontaneous. </em> FALSE. ΔG° < 0 so the reaction is spontaneous.

<em>d)The reaction is not favored thermodynamically.</em> FALSE. ΔG° < 0 so the reaction is favored thermodynamically.

<em>2) What word best describes the role that the palladium plays in the reaction between propene and hydrogen above?</em>

It is a catalyst because it increases the rate of the reaction without being altered by the end of the reaction.

<em>3) What did the palladium do to increase the rate of the reaction between the propene and hydrogen? </em>

<em>a)It changed the thermodynamic equilibrium.</em>  FALSE. Catalysts don't affect equilibrium

<em> b)It made the Gibbs free energy of the reaction more positive.</em>  FALSE. Catalysts don't affect Gibbs free energy.

<em>c)It lowered the activation energy of the reaction.</em>  TRUE. According to the Arrhenius equation, the lower the activation energy, the higher the rate constant, and the higher the rate of reaction. This is how catalysts act.

<em>d)It increased the activation energy of the reaction.</em> FALSE.

7 0
3 years ago
In a particular case of alpha decay, and isotope of uranium, U with a mass number of 238 and an atomic number of 92 emits and al
grandymaker [24]

Answer:

₉₂U²³⁸   →   ₉₀Th²³⁴  + ₂He⁴  

Explanation:

Alpha beta and gamma radiations are the examples of ionizing radiations. When an atom is an excited state and having high energy, the atom is in unstable state. The excess of energy is released by the atom to get the stability. The released energy is in the form of radiations which may include alpha, beta, gamma, X-ray etc.

Alpha decay:

Alpha radiations are emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. Which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number less than 4  and atomic number less than 2 as compared to parent atom the starting atom.

Properties of alpha radiation:

Alpha radiations can travel in a short distance.

These radiations can not penetrate into the skin or clothes.

These radiations can be harmful for the human if these are inhaled.

These radiations can be stopped by a piece of paper.

₉₂U²³⁸   →   ₉₀Th²³⁴  + ₂He⁴  

3 0
3 years ago
What is the mass of 2.30 ×1022 molecules of NaOH
viva [34]
Molar mass of NaOH = 39.997 g/mol

39.997 g  ---------- 6.02x10²³ molecules
   g --------------- 2.30x10²² molecules

mass = 2.30x 10²² * 39.997 / 6.02x10²³

mass = 9x199^24 / 6.02x10²³

mass = 15.280 g

hope this helps!

4 0
3 years ago
Gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 1.74 g of butane is
xeze [42]

Answer : The mass of CO_2 produced will be, 5.3 grams.

Explanation : Given,

Mass of C_4H_{10} = 1.74 g

Mass of O_2 = 11 g

Molar mass of C_4H_{10} = 58 g/mole

Molar mass of O_2 = 32 g/mole

Molar mass of CO_2 = 44 g/mole

First we have to calculate the moles of C_4H_{10} and O_2.

\text{Moles of }C_4H_{10}=\frac{\text{Mass of }C_4H_{10}}{\text{Molar mass of }C_4H_{10}}=\frac{1.74g}{58g/mole}=0.03moles

\text{Moles of }O_2=\frac{\text{Mass of }O_2}{\text{Molar mass of }O_2}=\frac{11g}{32g/mole}=0.34moles

Now we have to calculate the limiting and excess reagent.

The balanced chemical reaction is,

2C_4H_{10}+13O_2\rightarrow 8CO_2+10H_2O

From the balanced reaction we conclude that

As, 2 moles of C_4H_{10} react with 13 mole of O_2

So, 0.03 moles of C_4H_{10} react with \frac{13}{2}\times 0.03=0.195 moles of O_2

From this we conclude that, O_2 is an excess reagent because the given moles are greater than the required moles and C_4H_{10} is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of CO_2.

As, 2 moles of C_4H_{10} react to give 8 moles of CO_2

So, 0.03 moles of C_4H_{10} react to give \frac{8}{2}\times 0.03=0.12 moles of CO_2

Now we have to calculate the mass of CO_2.

\text{Mass of }CO_2=\text{Moles of }CO_2\times \text{Molar mass of }CO_2

\text{Mass of }CO_2=(0.12mole)\times (44g/mole)=5.3g

Therefore, the mass of CO_2 produced will be, 5.3 grams.

5 0
3 years ago
What is your weight a measure of
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Your weight is a measure of ibs/pounds
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