The diagram shows the thermohaline circulation, also known as the ocean's
conveyor belt.
4
What causes the water in the blue currents to sink?
OA. Water in the blue currents is colder, saltier, and denser than water
in the red currents.
OB. Water in the blue currents contains less salt and heat than water in
the red currents.
O C. Water in the blue currents is warmer than water in the red
currents.
O D. Water in the blue currents receives more wind and sunshine than
water in the red currents.

Answer:

H^+(aq) + OH^-(aq) ------->H2O(l)

Explanation:

Neutralization is a reaction that occurs between an acid and a base to yield salt and water only.

The net ionic equation shows the species that are directly involved in a reaction. It eliminates the spectator ions.

Recall that a strong acid and a strong base ionizes completely in solution to yield hydrogen and hydroxide ions respectively.

The net ionic equation for the neutralization of a strong acid and a strong base is; H^+(aq) + OH^-(aq) ------->H2O(l)

Answer:

a machine capable of carrying a person through time, and he returns at dinner the following week to recount a remarkable tale, becoming the new narrator.

In the new narrative, the Time Traveller tests his device. At first he thinks nothing has happened but soon finds out he went five hours into the future. He continues forward and sees his house disappear and turn into a lush garden. The Time Traveller stops in A.D. 802,701, where he meets the Eloi, a society of small, elegant, childlike adults. They live in small communities within large and futuristic yet slowly deteriorating buildings, and adhere to a fruit-based diet. His efforts to communicate with them are hampered by their lack of curiosity or discipline. They appear happy and carefree but fear the dark, and particularly moonless nights. Observing them, he finds that they give no response to mysterious nocturnal disappearances, possibly because the thought of it alone frightens them into silence. After exploring the area around the Eloi's residences, the Time Traveller reaches the top of a hill overlooking London. He concludes that the entire planet has become a garden, with little trace of human society or engineering from the hundreds of thousands of years prior, and that communism[16] has at last been achieved.

Returning to the site where he arrived, the Time Traveller is shocked to find his time machine missing and eventually concludes that it has been dragged by some unknown party into a nearby structure with heavy doors, locked from the inside, which resembles a Sphinx. Luckily, he had removed the machine's levers before leaving it (the time machine being unable to travel through time without them). Later in the dark, he is approached menacingly by the Morlocks, ape-like troglodytes who live in darkness underground and surface only at night. Exploring one of many "wells" that lead to the Morlocks' dwellings, he discovers the machinery and industry that makes

Explanation:

The least uncertainty in any simultaneous measurement of the momentum component px of this electron is 5.92 × 10⁻²⁸ kg m/s. Planck's constant, h = 6.626 x 10^-34 J s.

To determine the least uncertainty in any simultaneous measurement of the momentum component px of this electron. The Uncertainty Principle is a fundamental principle in quantum mechanics, also known as the Heisenberg Uncertainty Principle. The principle stipulates that it is impossible to know the exact position and momentum of a subatomic particle simultaneously with absolute precision.

The Heisenberg Uncertainty Principle mathematically expresses the relationship between position and momentum of a particle given by the following equation:Δx Δp ≥ h/4πwhere Δx is the uncertainty in position, Δp is the uncertainty in momentum, h is Planck's constant, and π is a mathematical constant that approximates to 3.1416.

To know more about constant visit:

https://brainly.com/question/31730278

#SPJ11

If adding ammonia to the magnesium hydroxide solution it will encourage the precipitation of Mg(OH)₂.

Adding ammonia NH₃ to the solution increases the hydroxide concentration.

NH₃ (aq) + H₂O (l) → NH₄⁺ (aq) + OH⁻ (aq)

Increasing the hydroxide concentration will encourage the precipitation of Mg(OH)₂ so that the hydroxide concentration is maintained in the solution.

Ammonia is widely used in the urea production process, the chemical industry, and the pulp and paper industry. Ammonia is an inorganic compound that is needed as an energy source in the nitrification process of aerobic bacteria.

Learn more about adding ammonia to the magnesium hydroxide at https://brainly.com/question/14546162

#SPJ4

The two statements that are true regarding the memory module labeled pc2-6400 are:

The module has a peak transfer rate of 6400 MB/s: The term "pc2-6400" indicates the peak transfer rate of the memory module. Here, "pc2" refers to the type of memory technology (DDR2), and "6400" indicates the peak transfer rate in megabytes per second (MB/s).

The module is compatible with a motherboard that supports DDR2 RAM: Since the memory module is labeled as DDR2, it is compatible only with motherboards that support DDR2 RAM. PC2-6400 indicates that the memory has a peak transfer rate of 6400 MB/s, which is a standard for DDR2 RAM.

earn more about memory here:

https://brainly.com/question/14829385

#SPJ11

Given :

Half-life of Iodine , \(t_{0.5}=8 \ days\) .

Initial concentration , \([A_o]=100\ mg\) .

To Find :

The amount of sample remains after 32 days .

Solution :

Rate constant is given by :

\(k=\dfrac{0.693}{t_{0.5}}\\\\k=\dfrac{0.693}{8}\ s^{-1}\\\\k=0.086625\ s^{-1}\)

Now , by rate law :

\([A]=[A_o]e^{-kt}\)

Putting all given values, we get :

\([A]=100\times e^{-(0.086625)\times 32}\\\)

\([A]=6.25\ mg\)

Therefore , the remaining sample after 32 days is 6.25 mg .

Hence , this is the required solution .

Answer:

1. Steric Hindrance: The size of ligands, metal ions and the coordination number must be considered while determining stability.

2. Charge: Charge balance is important to maintain stability in metal complexes. The overall charge of the complex should be neutral, and the ligands must balance the charge of the metal ion.

3. Chelate Effect: Metal complexes with chelating ligands generally show higher stability due to the formation of a ring structure that enhances the stability of coordination bonds.

4. Solvent: The nature of the solvent and its polarity affect the stability of metal complexes. An appropriate solvent should be chosen to ensure optimum stability of the complex.

5. Acid-Base Equilibria: The acidity or basicity of the ligands affects metal complex stability.

6. Temperature: The stability of metal complexes is also temperature-sensitive. A change in temperature can alter the stability of metal complexes.

7. Presence of Other Ions: The presence of other ions such as salts, counter-ions, or other metal ions can affect metal complex stability.

8. Steric Crowding: The presence of bulky groups in ligands can hinder coordination, leading to decreased stability.

Answer:

Please elaborate. Maybe if you had actual answer choices

Explanation:

...

Since 273 k – 243 k equals 30, the temperature change for an object going from 273 k to 243 k is 30 k.

Colors and temperatures can both be measured in Kelvin: A temperature unit commonly used in science is the Kelvin scale. Lord Kelvin created the scale after realizing the need for one with absolute zero as the zero point, which translates to 0 K as the lowest attainable temperature, or -273,15 °C.

On the Kelvin scale, a body's temperature cannot be negative. Since the Kelvin scale's absolute zero represents the lowest temperature that may exist, it is impossible for it to be negative.

To learn more about Kelvin scale visit:

brainly.com/question/29151720

#SPJ4

Answer:

See explanation

Explanation:

Crystallization is a separation technique used to obtain pure crystals of a substance from an impure mixture of solid substances.

The impure solid is dissolved in an appropriate hot solvent. This hot solvent is able to effectively dissolve the solid. However, as the solution is allowed to cool, the pure solid separates out of the solution as crystals.

The solid is now filtered to obtain the pure solid. The solid is also washed and dried to remove any solvent contaminant.

Answer:

Its a or d if im stupid my b

Explanation:

Binary ionic compounds consist of atoms of only two atoms  and hence the term binary is given to them.

Ionic compounds or electrovalent compounds are  the type of compounds which are  formed between two elements when there is an exchange of electrons which takes place between  the atoms resulting in the formation of ions.

When the atom looses an electron it develops a positive charge and forms an ion called the cation while the other atom gains the electron and develops a negative charge  and forms an ion called the anion.

As the two atoms are oppositely charged they attract each other which results in the formation of a bond called the ionic bond and the compound is called ionic compound.

When the compounds consist of atoms  of only two elements the compound is called as a binary ionic compound.

Learn more about ionic compounds,here:

https://brainly.com/question/9167977

#SPJ6

Answer:

B

Explanation:

Oxidation

Zn---> Zn2+ 2e

Reduction

Cu2+ + 2e ---->Cu

The major ionic constituents of sea salt are typically found to be sodium and chloride ions, as well as smaller amounts of other minerals and elements.

These ions are the result of the evaporation of seawater, leaving behind the dissolved salts and minerals that make up sea salt.

These two ionic constituents make up the majority of sea salt, forming the well-known compound sodium chloride (NaCl).

Sodium chloride, which aids in controlling blood pressure and fluid balance in the body, makes up the majority of sea salt.

It has certain minerals like potassium, iron, and calcium because it has undergone minimal processing. This is one reason why it's frequently thought to be more nutrient-dense than table salt, which has been severely processed and most of its nutrients removed.

However, there are very little levels of nutrients in sea salt.

To learn more about sea salt, visit:

https://brainly.com/question/30105881

#SPJ11

Answer:

Explanation:

There's a great many assumptions in this question. We have to assume  that the rod was completely immersed. We also have to note that we can read the volumes to 3 places accurately. School graduated cylinders are not that accurate.

Leaving those objections aside,  here is how the question should be done.

Final volume = 15.0 mL

Initial volume = 10.0 mL

Water displaced = 5.0 mL

The amount of water displaced is the same as the volume of the metal rod.

Finally the mass of the rod is 12.0 grams.

Density = mass / volume

Density = 12.0 grams / 5.0 mL

density= 2.4 grams / mL   a mL and a cc^3 are the same thing.

density = 2.4 grams / cc^3

The balanced half-reaction in acidic solution for the conversion of MnO4-(aq) to MnO2(s) is:

MnO4-(aq) + 4H+(aq) + 3e- → MnO2(s) + 2H2O(l)

To balance the half-reaction, we need to ensure that the number of atoms of each element and the overall charge are the same on both sides of the equation. In this case, we can see that Mn, O, and H are involved in the reaction.

First, we balance the oxygen atoms by adding water molecules (H2O) on the product side. Then, we balance the hydrogen atoms by adding H+ ions on the reactant side. Finally, we balance the charges by adding electrons (e-) on the reactant side.

The final balanced equation shows that 1 mole of MnO4- reacts with 4 moles of H+ and 3 moles of electrons to form 1 mole of MnO2 and 2 moles of H2O.

Learn more about acidic solution

brainly.com/question/12411990

#SPJ11

Answer:

1.24×10^6/6.2×10^-3

200

acc to scientific notation: 0.2×10^3 is the answer

Explanation:

pls mark me as brainlest

Answer

1Ca3N2 + 6NaCl ---> 3CaCl2 + 2Na3N

Explanation

Given the following equation:

___ Ca3N2 + ___NaCl -->CaCl2+__ + Na3N

Step 1: on the left there are 3 Ca, but on the right, there is one Ca, add 3 infront of CaCl2

Ca3N2 + NaCl ---> 3CaCl2 + Na3N

Step 2: on the right, there are 6 Cl, on the left there is only 1, therefore add 6 infront of NaCl

Ca3N2 + 6NaCl ---> 3CaCl2 + Na3N

Step 3: Now balance N, there are 2 N on the left and one on the right.

Ca3N2 + 6NaCl ---> 3CaCl2 + 2Na3N

Answer:

valence electrons get closer but rest of them are remain same

Answer:

0.087 g/cm^3

Explanation:

Density is Mass : Volume.

Volume = 12 x 8 x 9 = 864 cm^3

Mass = 75 g

Density = 75g/864 cm^3 = 0.087 g/cm^3

The density of a 75 g block of wood measuring 12 cm x 8 cm x 9 cm is 8.6 x 10⁻⁵ Kg/cm³.

Density is defined as the mass per unit volume of the body. Mathematically-

ρ = M/V

Given is a 75 g block of wood measuring 12 cm x 8 cm x 9 cm.

We can write -

Mass = [m] = 75 g = 75/1000 = 0.075 Kg

Volume = [V] = L x B x H = 12 x 8 x 9 = 864 cm³

Therefore, the density of the object will be -

ρ = M/V

ρ = 0.075/864

ρ = 8.6 x 10⁻⁵ Kg/cm³

Therefore, the density of a 75 g block of wood measuring 12 cm x 8 cm x 9 cm is 8.6 x 10⁻⁵ Kg/cm³.

To solve more questions on density and mass, visit the link below-

https://brainly.com/question/2900792

#SPJ2

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume = 0.94 mL

density = 7.3 g/mL

We have

mass = 7.3 × 0.94 = 6.862

We have the final answer as

Hope this helps you

Answer:

because battery have it's own voltage in it's composition

Answer:

Rubidium (Rb).

Explanation:

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

Electronic configuration => 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s¹

Name of element =?

To know the name of the element with the above electronic configuration, we shall determine the atomic number of the element. This can be obtained as follow:

Number of electrons = 2 + 2 + 6 + 2 + 6 + 2 + 10 + 6 + 1

Number of electrons = 37

Next, we shall determine the number of protons. This can be obtained as follow:

From the question given above, the element has no charge. Hence the element contains equal numbers of protons and electrons.

Number of electrons = 37

Number of protons = number of electrons = 37

Next, we shall determine the atomic number. This can be obtained as follow:

The atomic number of an element is simply defined as the number of protons present in the atom of the element. Thus,

Atomic number = proton number

Proton is = 37

Therefore,

Atomic number = 37

Finally, we shall determine the name of the element by comparing the atomic number of those in the periodic table.

Thus, the element with the above electronic configuration is Rubidium (Rb) since no two elements have the same atomic number

Answer:

Option C. 2000 cm³.

Explanation:

We'll begin by calculating the number of mole in 2 g of Mg. This is illustrated below:

Molar mass of Mg = 24 g/mol

Mass of Mg = 2 g

Mole of Mg =?

Mole = mass /Molar mass

Mole of Mg = 2/24

Mole of Mg = 8.33×10¯² mole.

Next, we shall determine the number of mole of H2 produced from the reaction. This is illustrated below:

Mg(s) + 2H^+ (aq) —› Mg^2+(aq) + H2 (g)

From the balanced equation above,

1 mole of Mg reacted to produce 1 mole of H2.

Therefore, 8.33×10¯² mole of Mg will also produce 8.33×10¯² mole of H2.

Finally, we shall determine the volume of H2 produced. This is illustrated below:

1 mole of H2 occupy 24000 cm³ at room temperature and pressure.

Therefore, 8.33×10¯² mole of H2 will occupy = 8.33×10¯² x 24000 ≈ 2000 cm³ at room temperature and pressure.

Therefore, 2000 cm³ of H2 were obtained from the reaction.

Answer:

A)

B) They are all compound substances

Explanation:

The salad and the glass of water with oil have two phases because their elements do not mix, we can see them separately. In the case of coffee with milk, there is only one phase because we can not see all the components separately, they are mixed in the solution.

They are all compound substances due to the fact that they are made of more than one element.

Answer:

wind is just high and low pressure of air, when a high pressure comes and crashes into a low pressure air pocket than it can form a wind storm.

Explanation:

The Uneven heating of the Earth's surface. Earth's rotation and unequal heating of the Earth's surface. air pressure towards regions of lower air pressure. ... air moving from areas of high pressure to areas of low pressure.

This is what will most likely cause a sudden wind to start blowing.

Answer:

ExplanationWhat are the properties of potassium?

Image result for give one other difference between the properties of copper and potassium

Potassium metal is soft and white with a silvery lustre, has a low melting point, and is a good conductor of heat and electricity. Potassium imparts a lavender colour to a flame, and its vapour is green. It is the seventh most abundant element in Earth's crust, constituting 2.6 percent of its mass.:

Difference between copper and potassium is the valence electron of sodium is in the 3s orbital whereas the valence electron of potassium is in the 4s orbital.

Potassium metal is soft and white with a silvery luster, has a low melting point, and is a good conductor of heat and electricity.

It is malleable, ductile, and an extremely good conductor of both heat and electricity. It is softer than zinc and can be polished to a bright finish.

Learn more about the copper and potassium here: brainly.com/question/15987580

#SPJ2

The Highlands consist of constantly erupting volcanoes.

The Highlands formed by uplifting volcanic activity.

The Highlands consist of constantly erupting volcanoes and the lands formed by uplifting of regions due to volcanic activity are the factors that are responsible for the unusual ecosystem of the Ethiopian Highlands.

There are eight types of ecosystem are present in Ethiopia. All these ecosystems are formed due to Volcanoes and volcanic activity which make the unusual ecosystems in the highlands of Ethiopia so we can conclude that volcanoes and volcanic activity is responsible for unusual ecosystems in Ethiopia.

Learn more about ecosystem here: https://brainly.com/question/15971107

Learn more: https://brainly.com/question/26131844

Answer:

The Highlands experience large amounts of average yearly rainfall.

The Highlands formed by uplifting volcanic activity