Chemistry Middle School

Wind and ocean currents do not move in straight lines; instead, they curve as they move across the planet. What is responsible for this pattern of movement? A.differences in water temperature B. differences in water salinity C.the Coriolis effect D.differences in water density
please help now

Answers

Answer 1
C............................
Answer 2

The correct answer is:    [C]:

____________________________________________

             →  " the Coriolis effect " .

____________________________________________

Hope this helps!

       Best wishes!

____________________________________________

Related Questions

A student is shown a simple model of particles that make up a liquid,as shown.


How should the model be changed to show the particles of a solid?

A. Increase the velocities of the particles, and increase the space between the particles
B. Increase the velocities of the particles, and decrease the space between the particles
C. Decrease the velocities of the particles, and increase the space between the particles
D. Decrease the velocities of the particles, and decrease the space between the particles

Answers

Answer:
            Option-D : Decrease the velocities of the particles, and decrease the space between the particles.

Explanation:
                     The solid state of matter is composed of particles closely packed with a minimum space between them. This closed packing of particles occur due to strong interatomic or intermolecular interactions between particles. Therefore, solids particles have zero translational and rotational motions and only show vibrational motions. So, decrease in velocity and decrease in space between particles is the right answer for making solids.

How many atoms are in 9.008 mol of Carbon?

Answers

5.423 x 10^24 atoms........
 the amount of atoms in 1 mole of carbon 12 is 6.022 x 10^23. So if you have 5 mole, you have: 5 x (6.022 x 10^23) = 3.011 x 10^24 atoms.

Consider the everyday hazardous substances in and around your home. All BUT ONE is a guideline for using, storing and disposing of hazardous household chemicals safely.

Answers

Answer:

D) Clean up any chemical spill immediately. Dispose of cleaning rags immediately by placing them in a sealed plastic bag.

Explanation:

Please, put the answer choices next time, just to simplify things. I really hope I did this right.

Answer:

D) Clean up any chemical spill immediately. Dispose of cleaning rags immediately by placing them in a sealed plastic bag.

Explanation:

Clean up any chemical spill immediately. Dispose of cleaning rags immediately by placing them in a sealed plastic bag. This is partially true. You SHOULD clean up chemical spills immediately. Then allow the fumes in the rags to evaporate outdoors before disposing of the rags by wrapping them in a newspaper and placing them in a sealed plastic bag. Then place the sealed bag in your trash can outdoors.

- thank you

What the significance of “Er” in the diagram
A. Average molecular
B. Threshold energy for the reaction
C. Maximum kinetic energy
D. Minimum kinetic energy

Answers

Answer:

D

Explanation:

What process best explains the astounding variety of dogs at a dog show? A. hybridization B. asexual reproduction C. selective breeding D. genetic engineering

Answers

The answer to your question is C. They selectively breed dogs for dog shows to have a more appealing outcome.

The process best explains the astounding variety of dogs at a dog show is selective breeding. Therefore, option C is correct.

What is the process of selective breeding?

Choose parents from a mixed population who exhibit these characteristics. They have been bred together. To produce the next generation, select the best offspring with the desired characteristics. Repeat the process for many generations until all offspring exhibit the desired characteristics.

Selective breeding within a gene pool can result in more subtle types of breed evolution, which can result in significant changes in breed type over time. In fact, few breeds have not gone through this type of evolution.

This process entails selecting and breeding animals with desirable characteristics, resulting in offspring with the same traits. When selective breeding is taken to its logical conclusion, it can result in the development of genetic disorders.

Thus, option C is correct.

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One method of preparing ClO2 is by the reaction of chlorine and sodium chlorite: Cl2 (g) + 2 NaClO2 (s) → 2 ClO2 (g) + 2 NaCl (s) If you allow 15.0 g of NaClO2 to react with 2.00 L of chlorine gas (Cl2) at a pressure of 1.50 atm and at 21 oC, how many grams of ClO2 can be prepared?

Answers

Final answer:

To determine the grams of ClO2 that can be prepared from the given reaction, use stoichiometry. First, calculate the moles of NaClO2 and ClO2 using their molar masses and given mass. Finally, calculate the mass of ClO2 using the moles obtained.

Explanation:

To determine the grams of ClO2 that can be prepared from the given reaction, we need to use stoichiometry. First, we need to calculate the moles of NaClO2 using its molar mass (74.44 g/mol) and its given mass (15.0 g). moles = mass / molar mass = 15.0 g / 74.44 g/mol = 0.201 mol.

Next, we use the balanced equation to determine the mole ratio between NaClO2 and ClO2, which is 2:2. So, the moles of ClO2 produced are also 0.201 mol.

Finally, we can calculate the mass of ClO2 using its molar mass (67.45 g/mol) and the moles obtained. mass = moles * molar mass = 0.201 mol * 67.45 g/mol = 13.53 g ClO2.

what is the meaning of weight?

Answers

Weight is properly defined as how much gravity acts upon an object.
I hope this helps!
1. (It depends on th example)a body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing."he was at least 175 pounds in weight"synonyms:heaviness, mass, load, burden, pressure, force; More2.a heavy object, especially one being lifted or carried.verb1.hold (something) down by placing a heavy object on top of it."a mug half filled with coffee weighted down a stack of papers"2.attach importance or value to."speaking, reading, and writing should be weighted equally in the assessment"

PLEAAASSEE HELLLLLLPP !!!!!

What is the average size of the exons you used to make the coding region? What is the average size of the introns in the gene?

Answers

the average size is <200 bp and the other answer is 20 bp

A blank is an illustration that shows how animals are connected in their search for food within an ecosystem

Answers

food web, unlike a food chain a food web physically shows the food an animal eats.

1. (10 pt) How are elements arranged in the Periodic Table? A. by their properties B. alphabetically C. by how much they are worth D. in the order they were discovered 2. (10 pt) Which is the correct symbol for the element silicon? A. SI B. S C. Si D. Sil 3. (10 pt) All atoms of an element are ________ . A. flammable B. visible under a microscope C. alike D. different 4. (10 pt) Elements that are usually shiny and good conductors of heat and electricity are known as ________________. A. gases B. metals C. solids D. nonmetals 5. (10 pt) The most recent model of an atom is the _______________. A. Bohr model B. Einstein model C. Nucleus model D. Electron Cloud model 6. (10 pt) Elements that are usually dull, brittle, and do not conduct electricity are known as A. gases B. metals C. solids D. nonmetals 7. (10 pt) Elements join together to form A. compounds B. ions C. protons D. atomic masses 8. (10 pt) Which picture best shows an atom? A. B. C. D. 9. (10 pt) In order for a chemical reaction to take place, a certain amount of _______________ must be present. A. heat B. friction C. chemicals D. energy 10. (10 pt) Enzymes are ____________ in the body that speed up chemical reactions. A. catalysts B. cells C. concentrations D. chloroplasts

Answers

1. Elements are ordered by their properties.
2. The symbol is Si. Elemental symbols have no more than 2 letters(except for unidentified elements), and only the first letter is capitalized.
3. All atoms of an element are alike.
4. Metals are shiny and can conduct. They are found on the left side of the periodic table.
5. The most recent model is the Electron Cloud model, or the Schrödinger model.
6. Nonmetals are dull and don’t conduct.
7. MULTIPLE elements conjoin to form compounds. If all the atoms are the same, it’s still an element.
8. I can’t see the picture, sorry.
9. In order for a reaction to take place, energy must be present. This can be in the form of heat, though, but it’s not universal.
10. Enzymes are catalysts that speed up chemical reactions.

Which group of items all contain a transparent part with at least one curved surface to refract light?

A. A human eye, a diving mask, and a telescope

B. A microscope, a camera, and a window pane.

C. An owl's eye, a smart phone, and a magnifying glass

D. An electron microscope, safety goggles, and eyeglasses

Answers

The answer is C. An owl's eye, a smart phone, and a magnifying glass. All of these are transparent and have a curved shape.

Hope I helped!
Hello Shelbyorozo2012

Answer: C. An owl's eye, a smart phone, and a magnifying glass

I hope I helped
-Chris

if 150g of aluminum react with 101g of sulfuric acid what is the maximum amount of hydrogen gas that can be produced

Answers

2Al + 3H2SO4 -> 3H2 + Al2(SO4)3

First, find your limiting reactant - do this with your moles.

Have:
Al - 5.559mol
H2SO4 - 1.030mol
Need:
Al - 0.6867mol
H2SO4 - 8.339mol

Your limiting reactant is sulfuric acid, so we will use that. 

Use your mole bridge and the calculated HAVE of sulfuric acid to do this.

1.030mol * (3/3) = 1.030mol of H2

If you want it in liters, multiply that by 22.4dm^3. If you want it in grams, multiply it by 2.016. Hope this helps!

how many neutrons does the most common isotope of hydrogen have?

Answers

The far more common hydrogen isotope, protium, has NO neutrons in the nucleus.

The most common isotope of hydrogen, called Protium, has no neutrons, only a single proton in its nucleus. Protium accounts for approximately 99.985% of all hydrogen atoms.

The most common isotope of hydrogen is called Protium. This isotope has only one proton in its nucleus and no neutrons. In contrast, the isotopes Deuterium and Tritium have one and two neutrons respectively. Protium makes up about 99.985% of all hydrogen atoms.

Buffers resist change in pH in a system when?

a) glucose (C6H12O6) is added to the system.
b) hydrogen chloride (HCl) is added to the system.
c) sodium chloride (NaCl) is added to the system.
d) sodium bromide (NaBr) is added to the system.

Answers

The answer to this question is b) hydrogen chloride (HCl) is added to the system. This is the only acid/base on the list. Only acids and bases have the potential to directly change pH as they contribute hydronium and hydroxide ions. Glucose, sodium chloride, and sodium bromide do not affect pH in the first place.
The answer is B.

hope it helps. :))))

Maria said that temperature is energy. Michael said that temperature is the measurement of energy. Make a decision as to who has the correct statement and justify your decision in two or more complete sentences.

Answers

Temperature is energy the measurement of the temperature is measuring the energy

Answer - I would think temperature is a measurement of energy, but I'm probably wrong. If anyone gets the correct answer, please correct me.

Explanation - Temperature is a measure of the average kinetic energy of the particles in an object. When temperature increases, the motion of these particles also increases.

I hope this helps, my apologies if it doesn't.

1) Which statement is TRUE? A) Energy can be created or destroyed. B) Electrical energy is created from other forms of energy. C) Energy in a battery makes new energy called electrical energy. D) Stored energy in a battery can be transformed into electrical energy.

Answers

Hello User

Answer: D. The energy can not be created or destroyed. It can only be transformed from one form to another. This is called the law of conservation of energy. 
I hope I helped
-Chris
The correct answer would be:

A) Energy can be created and destroyed.

This is a false statement because energy can not be created or destroyed. It can be converted to different forms of energy, but not created.

What factor impacts the possible number of ways in which different atoms can be put together

Answers

Answer:

the ability of atoms to combine

Explanation:

binds t? Carbon monoxide poisoning occurs when a dangerous amount of carbon monoxide binds to _____ and reduces the body's ability to use _____ effectively in respiration. A. hemoglobin, oxygen B. oxyhemoglobin, oxygen C. hemoglobin, carbon dioxide D. oxyhemoglobin, carbon dioxide

Answers

Carbon  monoxide  poisoning  occurs  when a dangerous amount of  carbon monoxide  binds to  hemoglobin and  reduces the  body's  ability  to use  oxygen  effectively in respiration

       Explanation
Hemoglobin   a protein in red blood  cells  binds   oxygen in the  lung and distribute  it  throughout  the  body.However  Carbon monoxide  is a very aggressive  molecule., it  has  a greater affinity  for hemoglobin  than   oxygen, thus it  displaces oxygen and quickly   binds therefore  very  little  oxygen  is transported through  the body  cells

curium-243 as a alpha decay equation

Answers

An important thing we must keep note of is that an α-particle (alpha particle) is a helium nucleus. This means that it contains 2 protons and 2 neutrons; giving it a mass number of 4.

During alpha decay, an atomic nucleus emits an alpha particle.
Essentially, it decays into an atom with an atomic number of 2 less than its original amount and a mass number of 4 less than its original amount.

In our case, Curium-243 undergoing alpha radiation decay must abide the following equation:

²⁴³₉₆Cm → ⁴₂He + x

～ The (number at the top/mass number) of x must be
243 - 4 = 239

～ The (number at the bottom/atomic number) of x must be
96 - 2 = 94

～ Element 94 is Pu (Plutonium). Therefore, the equation is:
²⁴³₉₆ Cm → ⁴₂ He +  ²³⁹₉₄ Pu

Hope this helps! ッ

PLEASE HELPPP MEEEE

An unknown substance is cooled from 25 °C to 10 °C. The table below shows the state of the substance at different temperatures.
Time (minutes) Temperature (degrees Celsius) State of matter 0 25 Liquid 2 23 Liquid 4 18 6 18 8 18 10 15 Solid 12 10 Solid

Which statement is correct about the unknown substance?
Its freezing point is 23 °C.
Its freezing point is 18 °C.
The substance sublimes at 23 °C.
The substance exists as a gas at 18 °C.

Answers

The second statment is true and right. Hope this helps!!

Answer: Option (b) is the correct answer.

Explanation:

Freezing point is defined as the point at which liquid state of a substance changes into solid state.

So, in the given table it is shown that at temperature [tex]18^{o}C[/tex] the substance is changing into solid state. Whereas at [tex]23^{o}C[/tex] the substance is in liquid state.

Hence, [tex]18^{o}C[/tex] will be the freezing point of the substance.

Thus, we can conclude that the statement its freezing point is [tex]18^{o}C[/tex], is correct about the unknown substance.

Hypothesis for isotopes and atomic mass

Answers

I think so that hypothesis is for isotopes and atomic mass.

It is becoming less expensive to screen blood samples for DNA. Certain diseases have a genetic basis. What is a possible ethical concern about the availability of inexpensive DNA testing?

people may be treated differently if certain genetic information is known about them.

DNA testing may be too slow to actually be useful to doctors.

Some diseases are not thought to have genetic causes.

Cures for diseases may be developed with help from DNA research.

Answers

Answer:

A

Explanation:

that's the right answer can't think of an explanation but it just make must sense

The results of a genetic test can confirm or rule out a suspected genetic condition. People may be treated differently if certain genetic information is known about them. The correct option is A.

What is DNA testing?

DNA testing also called the genetic testing is a type of medical test which identifies the changes in genes, chromosomes or proteins. It helps to determine a person's chance of developing or passing on a genetic disorder. More than 77,000 genetic tests are currently in use.

Genetic testing is voluntary. Because testing has benefits as well as limitations and risks. The decision about whether to be tested is a personal and complex one. A geneticist can help by providing information about pros and cons of the test.

The main reason for the high cost of genetic testing is the complexity of the process involved. The cost depends on several factors like the nature of the test.

Thus the correct option is A.

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Need help on all PLS HELP DO TOMORROW AND DON’T KNOW WHAT TO DO

Answers

Ecosystem, depends, water, non living, biomes, and millions.
Final answer:

The student's inquiry is too vague - more details about the subject or task are required to provide effective assistance.

Explanation:

Unfortunately, you have not provided enough information for me to be able to assist you effectively. Please provide more detail about the topic, subject, or specific question you need help with. Remember, the more you KNOW about what needs to be done today increases the chance you'll be ready for TOMORROW. Despite the pressure, take your time to understand the task - trying to rush through without fully understanding can lead to mistakes.

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Calculate the {H+}, {OH-}, oh, pOH, and % dissociation of a 1.0x10^-3 M solution of HCl

Answers

Since HCl is a strong acid, it readily dissociates, so we can assume that there are 1.0x10^-3 M of H+ ions. We can use the formula:

pH=-log[H+]
pH=-log(1.0x10^-3)
pH=3

We can find the pOH by subtracting 14-pH:

14-3=11
pOH=11

The [OH-] can be found by using the formula:

pOH=-log[OH-]
11=-log[OH-]
10^-11=[OH-]
[OH-]=1.0x10^-10

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What type of substance would be best for use in a cooling system?


a liquid with a high specific heat


a gas with a low specific heat


Please explain your answer.

Answers

It will a liquid with a high specific heat, because this liquid will take a lot of energy from the environment to become gas, so the environment will cool down greatly.

Answer:

a liquid with a high specific heat

Explanation:

Hugh described two substances which participate in photosynthesis.

Substance A: Source of energy for plant-eating animals
Substance B: Combines with sunlight and carbon dioxide

Which statement is correct?

A. Substance A is water and Substance B is oxygen.
B. Substance A is glucose and Substance B is water.
C. Substance A is water and Substance B is chlorophyll.
D. Substance A is chlorophyll and Substance B is oxygen.

Answers

The answer is B because glucose is an energy source and during photosynthesis, water combines with sunlight and carbon dioxide. You can observe by the chemical equation for photosynthesis : 6CO2 + 6H2O + light energy = C6H12O6 + 6O2

B. Substance A is glucose and Substance B is water.

how does increasing concentration/ temperature/ surface area affect the yield of products in a chemical reaction (not reversible)

Answers

Answer:
             Increasing concentration, temperature and surface area will increase the yield of products.

Explanation:
                   Concentration:
                                            Increase in concentration of reactants will increase the number of reactants per unit volume. Therefore, the probability of collisions will increase hence, it will result in the increase in yield.

                   Temperature:
                                        Increase in temperature increases the kinetic energy of reactants. Therefore, the increase in velocity of reactants results in the collisions with high energy. It makes it feasible for reactants to attain the optimum energy (activation energy) to convert into products with good yield.

                  Surface Area:
                                       The reactants in grinded / powder form reacts fast as compared to solid form. In fact, grinding results in increase of the surface area of reactants. Greater surface area increases the probability of reactants to colloid. Hence, increases the yield.

What is the molar mass of Beryllium

Answers

The mass of beryllium that combines with 1.000g of oxygen to form beryllium oxyde is .5633g. When atomic masses were first being measured, it was thought that the formula of beryllium oxide was Be2O3.

Hope this helped, sometimes I can get a bit overboard with my answers xd :p

If you were scientists examining the DNA sequence of two unknown organisms that you hypothesize share a common ancestor, what evidence would you expect to find?

Answers

If I were a scientist examining the DNA sequence of two unknown organisms that I hypothesize share a common ancestor, I would expect to find similar or almost identical DNA sequence between the two organisms. 

How are ionic bonds formed

Answers

Ionic bonds are formed when a cation and an anion transfer electrons. The anion gains electrons from the cation to finish its shell, and is usually a nonmetal or a metalloid. A cation gives the anion its electrons to get rid of its partial shell. Cations are metals.

Answer:

Ionic bonds are formed by the transfer of valence electrons (those that can move free) between certain type of atoms, these exchange generates two iconic atoms with opposite charge.

So, basically, the transfer of this electrons is how is formed.

Other Questions
A basketball is thrown upwards. The height f(t), in feet, of the basketball at time t, in seconds, is given by the following function: f(t) = -16t^2 + 16t + 32 Which of the following is a reasonable domain of the graph of the function when the basketball falls from its maximum height to the ground?A: 0.5 < t < 1B: 0.5 < t < 2C: 1 < t < 2D: 1 < t < 1.5 if 150g of aluminum react with 101g of sulfuric acid what is the maximum amount of hydrogen gas that can be produced Find the volume of the figure the diameter of the base is 4 cmThe figure is a cylinder that has d= 4 cm and h= 2.5 with a hemisphere on the top that has the same diameter as the cylinder (4 cm)Please help! Thanks!Answer Choices:A. 22 cm^3B. 152/3 cm^3C. 62/3 cm^3D. 46/3 cm^2 April spots the boy that she has a crush on sitting with his friends. her heart begins to pound, her hands get sweaty, and her cheeks feel hot. april's _______________ has been activated. during _____, the cell uses information from messenger RNA to produce proteins When 14.0 g of zinc metal reacts with excess hcl, how many liters of h2 gas are produced at stp? when 14.0 g of zinc metal reacts with excess hcl, how many liters of h2 gas are produced at stp? 9.60 l 4.80 l 0.208 l 0.416 l? Fertilization usually takes place in the select one:a. vagina.b. uterus.c. cervix.d. pelvic cavity.e. upper part of an oviduct. What is the relationship between the acts and EHR as it impacts your role as a Medical Assistant? Mi ____ es el hijo de mi hijo. nieto padrastro yerno What type of cell helps to stimulate b cells to produce antibodies? Juan has had his corpus callosum cut. When he touches something with his right hand, what happens? Convert. If necessary, round to the nearest tenth. (Recall: 1 mi 1.61 km) km/h ~ 10 mi/h Which of these island nations has the highest percentage of arable land? which of these island nations has the highest percentage of arable land? new zealand australia french polynesia papua new guinea federated states? What is the attribute being measured? A. PsiB. StressC. glass rodsD. number of rods Billy is flying his new radio-controlled helicopter around town. He is using a map in which each grid line is equivalent to 100 feet. Billy releases the helicopter from the library parking lot, at (2, 6) on the map. He gets it to cruising altitude and then starts measuring its flight. Billy flies the helicopter in a direct line to the town pool, at (6, 9) on the map. How far has the helicopter flown? Segment KL is tangent to J. If KLJK, what is mJ? The image is of a circle with centre P and having a sector KJM. KL is tangent to the circle. Points J, M and L are joined to form a horizontal line and thus a triangle KJL is formed. ____ idss/ipss monitor activity on network segments. essentially, they sniff traffic as it flows over the network and alert a security administrator when something suspicious occurs. Given the equation, c2h4(g + 3o2(g ? 2co2(g + 2h2o(l +1411 kj, how much heat is released when 8.00 g of o2 react? Read the excerpt from On the Road. I began to learn from him as much as he probably learned from me. As far as my work was concerned he said, Go ahead, everything you do is great. He watched over my shoulder as I wrote stories, yelling, Yes! Thats right! Wow! Man! and Phew! and wiped his face with his handkerchief. Man, wow, theres so many things to do, so many things to write! What does this excerpt demonstrate about Kerouacs connection to the literary movement of the beat generation? Is copping someone answer from Brainly show up as plagiarism for the teacher?