Which factor is responsible for the dry period

Answers

Answer 1

Answer:

drought

Explanation:

because it looses all of the water in the aria / desertification

Answer 2
Drought that’s the reason why

Related Questions

How many kilo joules of heat are required to the decompost 1.96 mol Nah I 3(s)

Answers

Heat required = = 126.42 kJ

Further explanation

Given

1.96 mol NaHCO₃(s)

Required

Heat needed

Solution

Reaction( decomposition of Baking soda (NaHCO₃) :

2NaHCO₃ (s) + 129 kJ ⇒ Na₂CO₃ (s) + H₂O (g) + CO₂ (g)

For 2 mol NaHCO₃ , heat needed = 129 kJ

conversion factor :

[tex]\tt \dfrac{129~kJ}{2~mol}[/tex]

So for 1.96 mol :

= 1.96 mol x (129 kJ/2 mol)

= 126.42 kJ

Is my answer correct?? Please correct me
Thank you!

Answers

Answer:

you are right

Explanation:

The theory of _______ of matter states that cannot be created or destoryed

Word bank: Matter Volume Element Conservation Mass Atoms Properties

Answers

Answer:

mass pic is explanation hope it helps

What mass of oxygen combines with 2.81 mol
of magnesium in the reaction
2 Mg(s) + O2(g) → 2 MgO(s)?

Answers

Answer: 22.48 g


Reason: Because Mg reacts with O2 in a 2:1 ratio you would divide 2.81 by two. 2.81/2=1.405 You would then multiply 1.405 by the molar mass of O2 which is 15.999 and get the final answer of 22.48 g.

22.48 g. mass of oxygen combines with 2.81 mol of magnesium in the reaction. For the reaction 2 Mg(s) + O2(g) → 2 MgO(s).

What do you mean by molar mass ?

The term molar mass is defined as the mass of 1 mole of that particular substance and number of grams per mole of a compound.

In other words, the molar mass is the total mass in grams of all the atoms that make up a mole of a specific molecule. As a result, the molar mass units are grams/mole.

The balance chemical equation is as follows :

2 Mg(s) + O2(g) → 2 MgO(s)

The metal Mg reacts with Oxygen in a 2:1 ratio you would divide 2.81 by two.

Now, we get,

2.81 / 2 = 1.405

You would then multiply 1.405 by the molar mass of Oxygen which is 15.999

= 1.405 × 16

= 22.48 g.

Thus, 22.48 g. mass of oxygen combines with 2.81 mol of magnesium in the reaction.

To learn more about the molar mass, follow the link;

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Leon is creating a model using the items in the picture below. How could he best improve his model?
O
Earth
Moon
Sun
Make the earth larger than the sun
Make the moon larger than the sun
Make the sun smaller than the earth
Make the moon smaller than the earth

Answers

Make the moon smaller than the Earth.

Help please!!! How many grams are in 3.46 moles of Sulfur?

Answers

Answer:

The answer is: 78.04454 grams

Explanation:

Answer:

IHi the answer is 32.065 grams

True/False: There are about 400 known elements

Answers

Answer: false

Explanation:

there are no more then 112 known elements.

Answer:

false

Explanation:

their are only 118 element

Multiple Choice
Identify the choice that best completes the statement or answers the question.
1. Pressure is the force
per
unit
a. volume.
b. surface area.
c. length
d. depth

Answers

Answer:

A or B

Explanation:

a letter stating three things that need urgent fixing in your school



Answers

Answer and Explanation:

Computers ( The computers are very old and very slow, and we have to notice that almost everyone are using computers at the same time at the school, which makes it even harder for it to load up assignments. )The Rick Rolling ( Everyone keeps sending links to teachers and students saying that it is part of some assignment but then you have to listen to Rick Astley, they should really block these links. )The lockers ( The lockers are also very old and they are breaking down and rusting a lot from the moisture in the hallways. One of the lockers even broke down today!!! I hope they can fix this so no one else gets hit with a locker door. )

Hope this helps! ;)

Ethylene glycol (C2H6O2) is used as an antifreeze in cars. If 250 g of ethylene glycol is added to 3.00 kg of water, what is the molality? Calculate how much the freezing point of water will be lowered. The freezing-point depression constant for water is Kf = –1.86°C/m. Show your work.

Answers

Answer:

2,909 M

Explanation:

molair mass is of.ethylene is 26,04 g/mol

first you need to calculate how much mL 3 kg is. You can do this by using the density of ethylene: 1,1 g/mL.

3000 g x 1.1 = 3300 mL = 3,3 L

Next you need to calculate the amount of moles:

250 g / 26,04 g/mol = 9,60 mol

Now you can calculate the molarity:

9,6/3.3 = 2,909 M

I don't know the answer for the second question. I'm sorry.

Which two subatomic particles have an equal, but opposite charge?

Answers

Answer:

Electrons have a negative charge. The charge on the proton and electron are exactly the same size but opposite. Neutrons have no charge. Since opposite charges attract, protons and electrons attract each other.Hope that helps

Explanation:

How many molecules are contained in 125 grams of water, H20?

Answers

Answer:18.015 g

Explanation:

Water has a molar mass of 18.015 g/mol . This means that one mole of water molecules has a mass of 18.015 g . So, to sum this up, 6.022⋅1023 molecules of water will amount to 1 mole of water, which in turn will have a mass of 18.015 g

Convert 12.04 x 1023 atoms of helium to moles

Answers

Moles of Helium = 2

Further explanation

Given

12.04 x 10²³ atoms of helium

Required

moles

Solution

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

moles Helium :

n = N : No

n = 12.04 x 10²³ : 6.02 x 10²³

n = 2

Which element has the larger ionization energy element E or Element M???

Answers

Answer: helium has the largest first ionization energy, while francium has one of the lowest.

Explanation:

The ionization energy decreases from top to bottom in groups, and increases from left to right across a period. Thus, helium has the largest first ionization energy, while francium has one of the lowest.

Answer:

Helium has the highest

Explanation:

please answer this for me shehsh

Answers

Answer:

ih2706

Explanation:

If a balloon containing 3000 L of gas at 39°C and 99 kPa rises to an altitude where the pressure is 45.5 kPa and the temperature is 16°C,
the volume of the balloon under these new conditions would be calculated using the following conversion factor ratios:

( the one I have marked, I’m not sure if that’s the answer or not )

Answers

[tex]\tt =3000~L\times \dfrac{289}{312}\times \dfrac{99}{45.5}[/tex]

Further explanation

Given

3000 L of gas at 39°C and 99 kPa to 45.5 kPa and 16°C,

Required

the new volume

Solution

Combined with Boyle's law and Gay Lussac's law  

[tex]\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}[/tex]

T₁ = 39 + 273 = 312

T₂ = 16 + 273 = 289

Input the value :

V₂ = (P₁V₁.T₂)/(P₂.T₁)

V₂ = (99 x 3000 x 289)/(45.5 x 312)

or we can write it as:

V₂ = 3000 L x (289/312) x (99/45.5)

Approximately what percentage of a human's DNA is used for coding Information for the synthesis of proteins?
O 5%
O 25%
О 99%
O 95%

Answers

I’m pretty sure it is 25 % :))

One percent  of a human's DNA is used for coding Information for the synthesis of proteins.

What is DNA?

DNA  is a hereditary material which is present in human beings as well as all other living organisms.  Every cell which is present in an organism's body has DNA  which is the same. Most of the DNA is situated in the cell's nucleus  and small amount of it can be found in the cell's mitochondria as well.

Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.

DNA bases are capable of pairing up with each other. Adenine pairs with thymine and guanine pairs up with cytosine .Each base is also attached to a sugar molecule  and a phosphate group. A base, phosphate  sugar are together called as nucleotides.

Learn more about DNA,here:

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Your question is incomplete, but most probably your full question was,approximately what percentage of a human's DNA is used for coding Information for the synthesis of proteins?

5%

25%

99%

95%

1%

Which of the following requires more energy then they produce?
Exothermic
Endothermic
(the subject is science but it wasn’t an option)

Answers

Answer:

The answer is endothermic

why sometimes the electrons of an atom transfer to higher energy level​

Answers

Answer:

According to Bohr, the amount of energy needed to move an electron from one zone to another is a fixed, finite amount. ... The electron with its extra packet of energy becomes excited, and promptly moves out of its lower energy level and takes up a position in a higher energy level. This situation is unstable, however.

Isotopes of the same element must have the same
A. atomic number
B. mass number
C. number of nucleons
D. number of neutrons

Answers

Answer:

D. number of neutrons

Explanation:

Isotopes of the same element must have the same number of neutrons. Neutrons of an atom are the uncharged particles within the nucleus.

Isotopy is the existence of two or more atoms of the same element having the same atomic number but having different mass number due to the differences in the number of neutrons in their various nuclei.

Therefore, isotopes differs based on the number of neutrons they contain.

Answer:

D. number of neutrons

Explanation:

Two isotopes of the same element have the same number of protons in the nucleus, but differ in the number of neutrons. The nucleon number is equal to the total number of protons and neutrons in the nucleus. ... The atomic mass number A is equal to the total number of protons and neutrons.

Select the correct answer.

Which statement best describes how chemical equations demonstrate conservation of mass?

A.
The number of reactants is the same as the number of products.
B.
The compounds are the same on each side of the reaction.
C.
The number of atoms of each element is the same on each side of the equation.
D.
The state of matter is the same on each side of the equation.

Answers

Answer:

All of the Above

A.The number of reactants is the same as the number of products.

B.The compounds are the same on each side of the reaction.

C.The number of atoms of each element is the same on each side of the equation.

D.The state of matter is the same on each side of the equation.

Explanation:

Answer:

C

Explanation:

I did the test

WHICH VIRAL REPRODUCTION CYCLE HAD THE VIRUS PUTTING ITS GENETIC MATERIAL INTO THE CELL
A. lytic cycle
B. lysogenic cycle
C. both

Answers

B lysosgenic hhhhhjjj had to make answer longer

Calculate the vapor pressure (in torr) of a 35°C solution of ethanol and propanol where the mole fraction of propanol is .75.
Assume ideal behavior.
P°ethanol = 100 torr
P°propanol = 36 torr

Answers

Answer:

i wish i know

Explanation:

What type of chemical reaction is the following reaction:
carbon monoxide and oxygen yield carbon dioxide

Answers

Answer:

decomposition reaction

Carbon Tetrahydride reacts with Oxygen gas to form Carbon Dioxide gas and Dihydrogen Monoxide gas.

Explanation:

Does gases have a kinetic attraction? Yes or no.

Answers

Answer:

No

Explanation:

There are no interactive forces (i.e., attraction or repulsion) between the particles of a gas.

The average kinetic energy of gas particles is proportional to the absolute temperature of the gas, and all gases at the same temperature have the same average kinetic energy.

Question 9(Multiple Choice Worth 1 points)
(05.03 LC)
Which of the following stars usually shine with the dimmest of light?
O Dwarfs
O Giants
O Main sequence stars
O Supergiants

Answers

main sequence starts maybe
Not sure but I think the main sequence stars

Which statement below best describes the difference between an orbit and an orbital?
a. An orbit is a fixed path around the nucleus where an electron must be found; an orbital is a probability region where an electron is likely (but
not necessarily) going to be found
b. An orbit and an orbital are the same thing
c. An orbital is a fixed path around the nucleus where an electron must be found; an orbit is a probability region where an electron is likely (but
not necessarily) going to be found

Answers

Answer:

An orbit is a fixed path around the nucleus where an electron must be found; an orbital is a probability region where an electron is likely (but

not necessarily) going to be found

Explanation:

Orbits are fixed elliptical paths where an electron must be found. The idea of orbits was introduced in the Bohr model of the atom. Electrons were shown to occupy fixed orbitals of quantized energy.

Orbital is an idea introduced by quantum mechanics. It refers to a region in space where an electron may be found. The wave mechanical approach does not view the electron as being found in a fixed orbital but rather defines a region in space around the nucleus where there is a high probability of finding the electron.

Why is biodiversity very important?

Answers

Answer: Biodiversity is important to humans for many reasons. ... Ecological life support— biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services.

Explanation:

Hey! Biodiversity is important because bio means life of course and diversity is always important. Biodiversity is important because all animals in an ecosystem rely on each other, without diversity there would be no food web or chain. And it would be impossible for anything to live. Hope this helped

How many atoms are in 4.72 moles or Ar?

Answers

Answer:

Argon is a chemical element with the symbol Ar and atomic number 18.

Explanation:

Answer:

Avogadro's number is a very important relationshiptoremember: 1 mole = 6.022×1023 6.022 × 1023atoms, molecules, protons, etc.

...

Explanation:

jayfeather friend me

Help please!! I'll name you brainliest!!

Answers

Answer:

magesium di chloride

Explanation:

it has one magnesium and 2 chlorines

Answer:

Magnesium Chloride

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