10. Circle the letter of each sentence that is true about how ocean currents influence climates.
a. Ocean currents influence many marine climates.
b. Only warm ocean currents influence climates.
c. The North Atlantic Drift gives Ireland a warm climate for its latitude.
d. The California Current gives the West Coast a warm climate for its latitude.​

Answer:

C) Chalk powder

Explanation:

that's why it's often used in gymnastics ~~sweaty hands yk

In an ecosystem in the hilly areas the should built its factory away from the river so that pollution does not reach the river.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Answer:

c

Explanation:

The commercial technology commonly uses plasma is a television. The correct option is c.

Commercial technology is any technology that is employed in the business world, including electric power, radio, television, phones, and other similar devices. These items are employed commercially in a variety of fields. An electrical gadget called television is used to watch entertainment.

Plasma is a substance found in televisions; these gas-filled pockets receive electricity to transform into plasma screens. The UV rays that these plasmas then emit create a picture as they pass through the phosphorus cells.

Thus, the correct option is c. a television, regarding a commercial technology that commonly uses plasmas.

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0.0989 grams of KOH is needed to neutralize 12.6 mL of 0.14 M HCl in stomach acid.

Volume of HCl solution = 12.6 mL = 0.0126 L

The concentration of HCl solution = 0.14 M We have to find the amount of KOH required to neutralize the given volume and concentration of HCl.

In order to calculate the amount of KOH, we need to first calculate the number of moles of HCl using the formula of Molarity;

Molarity = (Number of moles of solute) / (Volume of solution in liters)0.14 M = n(HCl) / 0.0126L0.14 × 0.0126 = n(HCl)n(HCl) = 0.001764 moles of HCl

Now, the balanced chemical equation for the reaction of KOH with HCl is;KOH + HCl → KCl + H₂OOne mole of KOH reacts with one mole of HCl.

Therefore, the number of moles of KOH required to neutralize the given amount of HCl would be equal to 0.001764 moles. Now, let's calculate the amount of KOH in grams.

Molar mass of KOH = 39.1 + 16.00 + 1.008 = 56.108 g/mol0.001764 moles of KOH would weigh = 0.001764 × 56.108 = 0.0989

hence, the amount of KOH required to neutralize the given volume and concentration of HCl would be 0.0989 grams.

Thus, 0.0989 grams of KOH is needed to neutralize 12.6 mL of 0.14 M HCl in stomach acid.

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The correct formula for the compound formed between barium and sulfur is BaS. Ba

The correct formula for the compound formed between barium and sulfur is BaS. Ba represents the chemical symbol for barium, and S represents the chemical symbol for sulfur. When barium and sulfur combine, they form an ionic compound with a 1:1 ratio of barium ions (Ba2+) and sulfide ions (S2-). The compound BaS indicates that one barium atom combines with one sulfur atom to form an ionic compound. In BaS, barium has a 2+ charge (Ba2+), and sulfur has a 2- charge (S2-).

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Balance the chemical equation, which involves the terms "balance" and "equation". Here's the balanced equation for the reaction: Ca(C₂H₃O₂)₂(aq) + Na₂CO₃(aq) → CaCO₃(s) + 2 NaC₂H₃O₂(aq)

In this equation, calcium acetate (Ca(C₂H₃O₂)₂) reacts with sodium carbonate (Na₂CO₃) to form calcium carbonate (CaCO₃) and sodium acetate (NaC₂H₃O₂). To achieve balance, coefficients are added before the chemical formulas to ensure that the number of atoms of each element is equal on both sides of the equation. In this case, the balanced equation has a coefficient of 2 in front of sodium acetate (NaC₂H₃O₂) on the product side. This ensures that the number of atoms of each element is conserved throughout the reaction, adhering to the principle of mass conservation in chemical reactions.

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Grizzly bears are omnivores, meaning that they consume both plant and animal matter. This study, which analyzed nitrogen content in bear fur samples, indicates that bears that consume more animal matter have a higher nitrogen content in their diet and are therefore more active.

Nitrogen is an essential nutrient for building proteins and is found in higher amounts in animal matter compared to plant matter. Therefore, bears that consume more animal matter may have more energy and be more active.
Hi! Based on your question, it seems that you want to know which type of food, when consumed by grizzly bears, leads to higher activity levels, as indicated by nitrogen content in their fur samples. Grizzly bears are omnivores, meaning they eat both plants and animals. Nitrogen content in their fur samples can be used as an indicator of the bear's diet. Typically, higher nitrogen content is associated with a diet richer in animal protein. Therefore, we can conclude that grizzly bears consuming more animal protein are more active.

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Grizzly bears are omnivores. this data (taken from bear fur samples to determine nitrogen content in their diet)x indicates that bears that consume ___ are more active

Grizzly bears are omnivores, which means that they consume both plants and animals. The data taken from bear fur samples to determine nitrogen content in their diet indicates that bears that consume more animal protein are more active. Animal protein provides bears with the necessary energy and nutrients to support their active lifestyles, including hunting, scavenging, and defending their territories.

However, it is important to note that the amount of animal protein consumed by grizzly bears varies depending on factors such as season, location, and availability of food sources.

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Answer:

(1) See below, (2) About 8.4 pH, (3) About 3.981 * 10⁻⁶ mol dm⁻³

Explanation:

1. A buffer is a solution that resist pH when adding a basic or acidic compound. It's purpose is to neutralize added acids and bases.

2. Remember that the formula for pH is -log [H+]. We have a 0.1 M solution of baking soda in water with [H+] of about 4.0 × 10⁻⁹. Therefore we can calculate the pH as follows...

pH = -log (4.0 × 10⁻⁹)

pH = -(-8.39794...) = (About) 8.4 pH of 0.1 M of baking soda

3. This question has a similar set up...

pH = -log [H+]

[H+] = inverse of log^- pH

[H+] = 10^-5.4 = (About) 3.981 \(*\) 10⁻⁶

The compound CS₂ is called carbon disulfide in chemistry.

With the chemical formula CS₂ and the structural formula S=C=S, carbon disulfide (commonly known as carbon disulfide) is a significant inorganic molecule in chemistry. It is a white liquid that serves as a component in the synthesis of organic compounds.

Several industries utilise carbon disulfide. Many compound like Rubber, viscose rayon, cellophane are made up of it.

The group of inorganic substances known as other non-metal sulfides includes CS₂. These are inorganic compounds with a sulfur atom in an oxidation state of 2, where the most massive atom linked to the oxygen is a member of the other non-metals group.

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Answer:

.-.

Explanation:

Answer:

The acid will be neutralized overtime

Explanation:

The presence of the pyrites leads to the leaching of large amounts of sulphuric acid, however the basic carbonates neutralizes the acid according to the reaction equation;

CaCO3 + H2SO4 ---> CaSO4 + CO2 + H2O.

This will prevent all the deleterious consequences associated with the leaching of the acid in the abandoned coal mine.

Answer:

It's a Planarian

Explanation:

Answer above

Answer:

A

Explanation:

Answer:

Atomic mass is never an integer number for several reasons

Answer:

The amount of energy that would be burnt in climbing stairs all day is approximately 52,738,560 Joules

Explanation:

The question is with regards to an experiment with details that can be obtained from the U Oregon website

The given parameters of the question are;

The energy consumed by a human each day =  2,500 kcal = 10,450,000 J

The required parameters obtained from U Oregon website are;

The average weight of a student, W ≈ 60 kg × 9.81 m/s² = 588.6 N

The average time it takes a student to run up a flight of stairs = 5.4 s

The height of the stairs, h = 0.2 m × 28 = 5.6 meters

Therefore, we get;

Work done in climbing up the stares = W × h = 588.6 N × 5.6 meters = 3,296.16 J

The height the student can climb in a day is given as follows;

The time of 1 day in seconds, t = 86,400 s

The height the student climbs in 5.4 s = 5.6 m

∴ Vertical velocity, \(v_y\) = 5.6 m/(5.4 s) = (28/27) m/s

The vertical height the student climbs in a day, \(h_{(v \, all \, day)}\) = \(v_y\) × t

∴ \(h_{(v \, all \, day)}\) = (28/27) m/s × 86,400 = 89,600 m

The work done all day = W × \(h_{(v \, all \, day)}\) = 588.6 N × 89,600 m = 52,738,560 J

The amount of energy in joules that would be burnt in climbing stairs all day = The work done all day = 52,738,560 Joules

Radioactive isotopes decay over time due to the process of radioactive decay. During this process, a nucleus of an atom emits radiation (alpha, beta, or gamma particles) and transforms into a different form. This process can cause it to form a different isotope.

What is Radioactive isotopes?

Radioactive isotopes are atoms that contain an unstable combination of neutrons and protons. This makes them unstable and they emit radiation in the form of alpha particles, beta particles, or gamma rays as they decay into a more stable form. Radioactive isotopes are used in many applications, including cancer treatments, medical imaging, and geologic dating.  They can also be used to detect and measure hazardous materials, such as asbestos in the environment.

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Answer: D

Explanation:

Amorphous

Answer:D

Explanation:

took the apec test

Answer:

5.45 mL

Explanation:

Archimedes' principle tells us that the volume of water an object displaces when it is submerged is equal to the object's volume.

This means that in order to calculate the object's volume, we can calculate the amount of water it displaced:

Thus the volume of the object is 5.45 mL.

Answer:

The answer is P(AR) 27Kpa

The compounds that would end in  "-ide" are;

1) Na₂S

2) CO2

3) AIP

We know that chemical compounds can be identified by the name of the compound. Also, the name of the compound reflects the kind of species that we have in the compound. The task that we have here is that we need to find out the three compounds that would have the ending  "-ide" in their names.

We have to know that the names of chemical compounds are often chosen by the International Union of Pure and Applied Chemistry (IUPAC). These rules are revised from time to time and are thus updated in order to help us to identify compounds.

It is important to note that the compounds whose names are most likely to end in the term  "-ide" would be the binary compounds that are composed of the metals and the non metals.

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Nitration is the process by which an nitro group (-NO2) is introduced to a chemical compound. Electrophile is a molecule that has a tendency to acquire electrons and hence it is attracted towards the electron-rich centers to neutralize the charge imbalance.

During the nitration of methyl benzoate, the reaction is carried out with nitronium ion (NO2+), which is highly electrophilic and attacks the aromatic ring. The nitration of methyl benzoate occurs in the presence of a mixture of concentrated sulfuric acid and concentrated nitric acid (nitrating mixture).The nitrating mixture is used to prepare the nitronium ion, NO2+. This is the electrophile which carries out the nitration of methyl benzoate.Nitronium ion is formed as follows: HNO3 + H2SO4 → NO2+ + HSO4− + H2OWhen sulfuric acid is added to nitric acid, the acid becomes protonated and undergoes an equilibrium reaction as shown below:HNO3 + H2SO4 ⇌ NO2+ + HSO4− + H2OThe product that is formed is nitronium ion, NO2+. Thus, by adding sulfuric acid, the concentration of NO2+ increases which increases the electrophilicity and leads to the formation of more electrophile. Therefore, the concentration of the nitronium ion can be increased by adding more sulfuric acid to the reaction mixture, which will make the solution more acidic, increasing the amount of nitronium ion, NO2+.

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A. The ionic formula for the compound formed between Na⁺ and O²⁻ is Na₂O.

B. The ionic formula for the compound formed between Br⁻ and Al³⁺ is AlBr₃.

What is an ionic formula?

Ionic formula, also known as chemical formula, is a representation of a chemical compound that shows the relative number and types of ions present in the compound. It is the shorthand notation that is used to describe the ionic compound in a simple and concise manner. Ionic compounds are composed of positively charged ions (cations) and negatively charged ions (anions) held together by electrostatic forces of attraction.

The ionic formula shows the ratio of ions in the compound, with the cation written first and the anion written second, using subscripts to indicate the number of each ion present. For example, the ionic formula for table salt (sodium chloride) is NaCl, which indicates that one sodium ion (Na+) is present for every one chloride ion (Cl-) in the compound. The ionic formula is essential in understanding the composition and properties of ionic compounds and is widely used in chemical nomenclature, chemical equations, and chemical reactions.

This is because sodium (Na⁺) has a valency of +1, while oxygen (O²⁻) has a valency of -2. To form a neutral compound, two sodium ions are needed for every one oxygen ion, resulting in the formula Na₂O.

This is because aluminum (Al³⁺) has a valency of +3, while bromine (Br⁻) has a valency of -1. To form a neutral compound, three bromine ions are needed for every one aluminum ion, resulting in the formula AlBr₃.

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Based on the calculations, the total pressure of the final products is equal to 1.76 atm.

From the information provided about this chemical reaction, we can logically deduce the following parameters:

Next, we would write the properly balanced chemical equation for this chemical reaction:

                               I₂ + 5F₂   ⇒  2IF₅

Also, we would determine the number of moles of each atom of I₂ and F₂:

\(Number \;of \;moles = \frac{mass}{molar\;mass}\)

Substituting the given parameters into the formula, we have;

Number of moles = 63.45/253.8

Number of moles = 0.25 moles.

Assuming I₂ were limiting, we would need:

5 × 0.25 = 1.25 moles of F₂.

For fluorine gas, we have:

PV = mRT/MM

Mass, m = PVMM/RT

Mass, m = 2.5(5.00)(38)/(0.0821 × 298)

Mass, m = 475/24.4658

Mass, m = 19.42 grams.

Number of moles = 19.42/38

Number of moles = 0.51 moles.

The total number of moles = 0.25 + 0.51 = 0.76 mol.

For the mole fraction of I₂, we have:

Mf = 0.25/0.76

Mole fraction = 0.33.

For the mole fraction of F₂, we have:

Mole fraction = 1 - 0.33 = 0.67.

Next, we would determine the total pressure of the two elements by applying Dalton's law:

Total pressure = 0.33 × 0.27 + 0.67 × 2.5

Total pressure = 1.76 atm.

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Answer: When you add an electron to zinc, it needs some extra energy. This is because zinc atoms naturally don't like having an extra electron. The extra electron and the electrons already present in zinc repel each other due to their negative charges. So, you have to give some energy to the zinc atom to overcome this repulsion and make it accept the additional electron. Basically, energy input is required to make zinc accept an extra electron because the electron doesn't fit easily and needs some force to be added.

Explanation: hope this helps