Chemistry High School

When is Africa's Serengeti plains herbivores migrate across this area following pls pls help me out

When Is Africa's Serengeti Plains Herbivores Migrate Across This Area Following Pls Pls Help Me Out

Answers

Answer 1
It will be grasses I guess

Related Questions

Mikala pours a tablespoon of salt into a beaker of water. Diffusion will cause the salt molecules to dissolve in the molecules of water. How could Mikala increase the diffusion rate of the salt molecules?
A. Mikala could remove all sources of light from the beaker.
B. Mikala could slowly pour more water into the beaker.
C. Mikala could decrease the temperature of the solution.
D. Mikala could increase the temperature of the solution.

Answers

Answer- D. Mikala could increase the temperature of the solution.

Explanation- diffusion rates increase at higher temperatures!

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A scientist made the following table showing the number of eggs laid by two different salmon. Based on this data, which fish has the best chance of their offspring surviving, and what type of adaptation is this?


A) Salmon #1, life cycle adaptation
B) Salmon #1, physical adaptation
C) Salmon #2, life cycle adaptation
D) Salmon #2, behavioral adaptation

Answers

It’s d I did this before

Answer:

C

Explanation:I got it correct on a quiz I did that had this question

PLEASE HELP ME EASY
List three household products that should go to a secure landfill site instead of regular sanitary landfill.

Answers

Answer:

plastic, glass, and electronics

Explanation:

those take longer to erode than normal trash.

What element should I do a project on?

Answers

Answer:

Project scope statement?

Explanation:

it's good one just do research on it

SHOW ALL WORK AND INCLUDE UNITS
How much heat is required to raise the temperature of 10.0 g of iron from 25°C to 100.°C? The specific heat capacity of iron is 0.46 J/g°C.

Answers

Answer:

345J

Explanation:

-mass of iron (m) = 10.0 g

-temperature (ΔT) = final temperature- initial temperature= 100-25=  75 degree Celsius

-Specific Heat capacity of iron (c)= 0.46J/g°C.

Heat (Q)=?

Solution:

Formula for Heat is :

Q=m x c x ΔT

Q= 10 x 0.46 x 75

Q= 345 J.  

so, 345 joules of heat are needed to increase the temperature of 10 grams of iron.

From the above formula, all other questions can easily be solved from the same procedure.

345 joules of heat is required  to raise the temperature of 10.0 g of iron from 25°C to 100°C.

How we calculate the required heat in any reaction?

Required heat of any reaction can be calculated as:

Q = m x c x ΔT, where

In the question given that:

m = mass of iron = 10g

c = specific heat capacity of iron = 0.46J/g°C

ΔT = change in temperature = final temperature- initial temperature= 100-25=  75 degree Celsius

Now putting all these values in the above equation, we get

Q= 10g x 0.46J/g°C x 75°C = 345J

Hence, 345 joules of heat is required.

To know more about required heat of a reaction, visit the below link:

https://brainly.com/question/878982

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Answers

Answer:

3 i am pretty sure make me brainy i gust

Explanation:

Sea water contains 2% salt (NaCl) by weight. Given that water has a

density of 1g/mL. Determine the concentration of salt in:


(a) mg/L , (b) ppm.

Answers

Answer:

a) Concentration of salt in mg/L = 2g/100mL

b) concentration in ppm = 20000 ppm

Explanation:

Percentage composition of salt by weight in water = 2%

Density of water = 1 g/mL

100 mL of water will has a mass of 100 g

Mass of salt in 100 g of water = 2% ×100 g = 2 g

Therefore, 2 g of salt is dissolved in 100 mL of solution

Concentration of salt in 100 mL of solution = 2g/100mL

a) Concentration in mg/L

Mass of salt = 2 g = 2000 mg

Volume of solution = 100 mL = 0.1 L

Concentration in mg/L = 2000 mg/0.1 L

Concentration in mg/L = 20000 mg/L

b) Concentration in ppm

1 ppm = 1mg/L

Therefore, concentration in ppm = 20000 ppm

Sodium chloride is a ____ substance because the atoms within are arranged in repeating patterns.


work bank
- crystalline
- hydrogen bonds
- hydrophilic
- hydrophobic
- polar molecule
- solvent

Answers

An ionic solid is a crystalline solid composed of ions (even if the ions are polyatomic). NaCl is an example of an ionic solid

Но Water Lewis steucture​

Answers

what are asking commet it and I might be able to help

5. What kind of model is represented in the image below?"

A. mathematical
B. physical
C. virtual

Answers

Answer:

virtual

Explanation:

because we cannot touch or sense it

I believe the answer is C. Virtual

Calculate the pH after 0.10 mol of NaOH is added to 1.0 L of a solution that is 0.40 M CH3NH2 and 0.80 M CH3NH3Cl. WebAssign will check your answer for the correct number of significant figures. Calculate the pH after 0.10 mol of HCl is added to 1.0 L of a solution that is 0.40 M CH3NH2 and 0.80 M CH3NH3Cl. WebAssign will check your answer for the correct number of significant figures.

Answers

Answer:

E

Explanation:

will mark BRAINLYIST
please help

Answers

1.00mol is the correct answer

A gas tank contains 2.5 moles of oxygen, 7.0 moles of nitrogen and 0.5 mole of water vapor. The total pressure of the mixture is 852 torr. Calculate the partial pressure of each gas. Show work.

Answers

Answer:

The partial pressure of each gas is:

Oxygen= 213 torrNitrogen= 596.4 torrWater Vapor= 42.6 torr

Explanation:

The pressure exerted by a particular gas in a mixture is known as its partial pressure. So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:

PT = PA + PB

This relationship is due to the assumption that there are no attractive forces between the gases.

Dalton's partial pressure law can also be expressed in terms of the mole fraction of the gas in the mixture. The mole fraction is a dimensionless quantity that expresses the ratio of the number of moles of a component to the number of moles of all the components present.

The mole fraction of a gas in a gas mixture is given by:

XA = nA / nT

This fraction will always be less than 1.

So in a mixture of two or more gases, the partial pressure of gas A can be expressed as:

PA = XA * PT

In this case, you know:

number of moles of oxygen= 2.5 molesnumber of moles of nitrogen= 7.0 molesnumber of moles of water vapor= 0.5 moles

So, the number of total moles nT is calculated as:

nT= number of moles of oxygen + number of moles of nitrogen +number of moles of water vapor

Then:

nT= 2.5 moles + 7.0 moles + 0.5 moles

nT= 10

So, the mole fraction of the gas in the mixture is:

mole fraction of oxygen = [tex]\frac{2.5 moles}{10 moles}[/tex] = 0.25mole fraction of nitrogen = [tex]\frac{7 moles}{10 moles}[/tex] = 0.7mole fraction of water vapor = [tex]\frac{0.5 moles}{10 moles}[/tex] = 0.05

Being the total presurre (PT) equal to 852 torr, then:

Poxygen= 0.25*852 torr= 213 torrPnitrogen= 0.7*852 torr= 596.4 torrPwater vapor= 0.05*852 torr= 42.6 torr

The partial pressure of each gas is:

Oxygen= 213 torrNitrogen= 596.4 torrWater Vapor= 42.6 torr

Which of the following describes an exothermic reaction?

Answers

An exothermic reaction is described by ΔH(reactants) is greater than ΔH( products) and the correct option is option A.

What is Exothermic reaction?

The word exothermic means “releasing heat.” Energy, often in the form of heat, is released as an exothermic reaction proceeds.

Enthalpy of a reaction is defined as the heat energy change (Δ H) that takes place when reactants go to products. If heat is absorbed during the reaction, Δ H is positive; if heat is released, then Δ H is negative.

ΔH value negative –> energy released –> exothermic reaction

ΔH value positive –> energy absorbed –> endothermic reaction

Therefore, an exothermic reaction is described by ΔH(reactants) is greater than ΔH( products) and the correct option is option A.

Learn more about Exothermic reactions, here:

https://brainly.com/question/10373907

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Which of the following best support the claim that the cycling of matter and energy in Earth's interior affects
Earth's surface? Select all correct answers!!!!

A)Tectonic plates move together, apart, and past each other.
B)Lava can be observed rising to Earth's surface in some places.
C)The Earth's crust is much cooler than the Earth's interior.
D)The Earth's inner core is composed mostly of solid iron.

Answers

Answer:

am not sure but I think it c

Answer:

it’s A and B and the last one I still am trying to figure out.

Explanation:

The orbits of the planets in our solar system are
not
a Elliptical, circular
b Circular, elliptical
C Circular, oval
d None of the above

Answers

Answer:

A

Explanation:

I don't know how to say how I got it.

Answer:

d

Explanation:

the orbits of the planets in our circular elliptical and circular

Earthquakes are common at ocean-continent convergence zones but not ocean-ocean convergence zones. TRUE FALSE Check it​

Answers

Answer:

FALSE

Explanation:

The earthquakes are common in both types of convergences is oceanic and continental and ocean to oceanic convergence. As the process of subduction takes places at the oceanic - oceanic boundary and resultant plate slide down other plate leading to recycling of the crust, volcanic eruptions and this leads to the formation of a volcanic arc, trenches, and faults.

What is a catalyst and why is it used in chemical reactions?

Answers

Answer:

A catalyst is a substance that can be added to a reaction to speed up the process without being absorbed by it. Catalysts usually work by lowering the activation energy or modifying the mechanism of a reaction. Proteins that act as catalysts in biochemical reactions are known as enzymes.

Explanation:

Catalysts speed up a chemical reaction by lowering the amount of energy you need to get one going. Catalysis is the backbone of many industrial processes, which use chemical reactions to turn raw materials into useful products.

It’s cold outside and you decide to cook some pasta. As you boil the noodles, the kitchen window begins to fog up. Which processes are at work here?


boiling and freezing

vaporization and condensation

evaporation and thawing

condensation and evaporation

Answers

Answer:

condensation and evaporation

Explanation:

condensation forms when warm humid air contacts cold surface. during cold months.

Iron + --> iron sulphate + copper What is missing ? Iron sulphate Copper sulphate Copper oxideIron oxide

Answers

Answer:

Copper Sulphate is missing

2.00 L of a gas is collected at 25.0°C and 745.0 mmHg. What is the volume at 760.0 mmHg
and 273K?*

Answers

1.7960L

Explanation:

the mass of the gas is constant in both instances

pv/T=constant(according to pv=nRT)

745mmHg*2L/298K=760mmHg*v/273K

v=1.7960L

define acidic salt with example​

Answers

Acid salts are a class of salts that produce an acidic solution after being dissolved in a solvent. Its formation as a substance has a greater electrical conductivity than that of the pure solvent. An acidic solution formed by acid salt is made during partial neutralization of diprotic or polyprotic acids.

Answer:

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Acidic Salt

Acid salts are a class of salts that produce an acidic solution after being dissolved in a solvent. Its formation as a substance has a greater electrical conductivity than that of the pure solvent. An acidic solution formed by acid salt is made during partial neutralization of diprotic or polyprotic acids.

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Explanation:

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What is the symbol for entropy? S ΔH H ΔS

Answers

Answer:

S

Explanation:

The symbol for entropy is S, and a change in entropy is shown as “delta” S or ΔS. If the entropy of a system increases, ΔS is positive. If the entropy of a system decreases, ΔS is negative.

Molarity and Dilution

How many moles are needed in a 100. mL solution of a 0.10M CuSO4 5H2O solution?

Answers

Answer: The moles needed are 0.01.

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

[tex]Molarity=\frac{n\times 1000}{V_s}[/tex]

where,

n = moles of solute [tex](CuSO_4.5H_2O)[/tex] = ?  

[tex]V_s[/tex] = volume of solution in ml  

Now put all the given values in the formula of molarity, we get

[tex]0.10=\frac{n\times 1000}{100}[/tex]

[tex]n=\frac{0.10\times 100}{1000}=0.01[/tex]

Therefore, the moles needed are 0.01.

can someone help ill give 30 extra points if its right

Answers

Answer:

sweating

Explanation:

why do I need 20 words

someone help ,, I'll give brainliest lolll .

Answers

Answer:

the correct answer is c, how easily something catches flames

what is the name of the part of a cell that allows molecules in in, such as glucose and oxygen?

Answers

Answer:

A plasma membrane is permeable to specific molecules that a cell needs. Transport proteins in the cell membrane allow for selective passage of specific molecules from the external environment. Each transport protein is specific to a certian molecule (indicated by matching colors).

3 – Simple Diffusion Across the Cell (Plasma) Membrane: The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down their concentration gradient, by simple diffusion.

Or Cell Membrane

Explanation:

Hope This HElp??

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why is it necessary to specify temperature when giving Ka value​

Answers

Answer:

Because the equilibrium constant is only at constant at temperature. Changing the temperature changes the Ka.

Acidified water is electrolysed by using carbon electrodes. What is produced
at Negative carbon electrode

Answers

Answer:

Hydrogen gas

Explanation:

During electrolysis of acidified water, H+ ions are reduced to H2 gas at the negative carbon electrode (cathode) and hence hydrogen gas is liberated at cathode.

What would be the volume, in liters, of 85.5 grams of carbon monoxide at STP?

Answers

the volume in liters of 85.5 grams of carbon monoxide at STP would be —— 68.4L
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2. What are three factors that affect birth and/or death rates? asap Waste water from nuclear power plants is generally:coldmuddyradioactivewarm The authority of a court to be the first to hear a case is known as:AAppellate JurisdictionB.Original JurisdictionC.Concurrent jurisdictionD.Preliminary Jurisdiction what would be the translations in Japanese? 1. Are you listening to musie?2 i am going to drink tea3. I am not going to return home4. I am going to read hiragana5. I am not going to eat sushi6. I am going to speak Japanese7. I am not going to watch a movie8. I am going to Hunter's house.9. i am not going to do karate10. I am going to get up at 6.11. I am not coming to school12. I am going to study Japanese How did mass production change the way products were created? Check all of the boxes that apply.Unskilled workers could make products.Factories took longer to create products.Factories needed more skilled workers.Fewer tasks were done by hand.Inventions made production less time consuming. 1) Mike invests $2,316 in a retirementaccount with a fixed annual interest rate of3% compounded continuously. What willthe account balance be after 17 years? (The Alchemist) Choose ONE of the quotes provided below. Copy it into your answer box. Then, write 5 sentences about how YOU relate to that quote or what it means to you.Everyone seems to have a clear idea of how other people should lead their lives, but none about his or her own (p. 18). . . . when you really want something, its because that desire originated in the soul of the universe. Its your mission on Earth (p. 24). 20 POINTS!!!!!! HELP PLEASE!!!!!!! Think of an object , person or place at home that functions similar to the chloroplast. Find the missing angle of the parallelogram.V52?60 Read this excerpt from The First Men in the Moon.What is this spirit in man that urges him forever to depart from happiness and security, to toil, to place himself in danger, to risk even a reasonable certainty of death?In at least 150 words, explain how the quote above relates to one of the themes in The First Men in the Moon. Use details from the text to support your explanation. PLEASE ASAPDales young son does not know much about his dads job but he does know that his dad works at the Chevy Manufacturing Plant. Dale explains to his son that he works in Quality Control. How might Dale simply describe the place that he works in and some of the tasks he performs to his son? How might Dale explain the jobs of other people in his plant? conceited or self confident? why? What changes if any should be made in sentence 2 Predict what will be observed in each experiment below. experiment predicted observation.1. 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We also know how to make machines and devices that make life easy forus. Scientists dedicate their lives to knowledge, but even with alifetime commitment, sometimes scientists fail to find all the answers. One mystery that still remains unsolved is whywe yawn-what makes us yawn andwhat purpose it serves.Recent studies suggest that we yawn when we get tired as a way to encourage our brains. The theory is that yawning helps cool the brain, allowing it towork more efficiently. According to WebMD's article about these studies, when you yawn, your jaw muscles get stretched, increasing blood flow to yourneck face, and head. Also a deep breath during the yawn forces spinal fluid and blood down from the brain. The cool air then cools down these fluids.Other scientists believe, however, that yawning is a form of communication. This theory attempts to explain why yawning seems to spread from person toIS person. This kind of behavior is called *contagious yawning" and carries with it a possible socialmessage. Scientists are not yet sure what exactly themessage is, but they believe people who have more social empathy are more likely to start yawning when they see someone else yawning.Scientists will continue to investigate the mystery of the yawn. Is it a leftover behavior from before humans had language? Was it a "Hey, I'm sleepy. Let'sgo to sleep" message? Or is it really just a way to keep our brains cool? While this is behavior still is largely a mystery, one thing is certain: you are probablyfighting the urge to yawn right about now.According to the text, what is one purpose of the yawn?TO encourage the brainO To find all the answersO To wake up the bodyO To exercise facial muscles 1. Which word rhymes with (woods)?A) wordB) swordsC) mudD) hoods2. Which word rhymes with (mouse)?A) miceB) houseC) ratD) fuse3. Which word rhymes with (thumb)?A) crumbB) climbC) thumpD) bomb4. Which word rhymes with (fall)?A) fellB) wallC) maleD) stair5. Which word rhymes with (thief)?A) creepB) sleeveC) leafD) deaf In New York City at the spring equinox there are 12 hours 8 minutes of daylight. The longest and the shortes days of the year vary by 2 hours 53 minutes from the equinox. In this year the equinox falls on March 21. In this task you'll use a trigonamic function to model the hours of daylight hours on certain days of the year in New York City wich is the correct?