Which element, represented by X, reacts with oxygen to produce the compound X2O?

Aluminum

Calcium
Argon
Lithium

Answers

Answer 1

Answer:

lithium

Explanation:

this is because lithium has a valency of 1 and oxygen has a valency of 2 thereby exchanging valency to create Li²0


Related Questions

Need help. Is this correct

Answers

Answer:

Yes, that is correct!

Explanation:

Answer:

Yes

Explanation:

A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are simultaneously attracted by the two atomic nuclei. A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions.

A whale is swimming in the ocean. It communicates with another whale by sending out a sound. Which of the following best
describes how the sound gets to the other whale?
A.
All of the sound absorbed by water changes to heat before getting to the other whale.
В.
The sound is transmitted through water until it reaches the other whale.
C.
All of the sound is diffused in
the water until only a faint sound reaches the other whale.
.D
The sound is reflected in the water before it gets to the other whale.

Answers

Answer:

A.

The sound is transmitted through water until it reaches the other whale.

Explanation:

When one whale makes a sound, the sound is transmitted through water until it reaches the other whale. The sound causes a ripple-like effect in the water, producing waves that travel in the water. The waves are heard in all directions. This is why humans can hear the sounds animals make underwater.

The statement which best describes how the sound gets to the other whale is that all of the sounds absorbed by water change to heat before getting to the other whale. Thus, the correct option for this question is A.

How sound may transmit from one place to another?

The transmission of sounds is generally carried out through a medium in the form of waves. These sound waves involve the pattern of disturbance caused by the movement of energy.

In an aquatic environment, when one whale successfully constructs a sound, the sound is effectively transmitted through the medium that is known as water.

It remains in the form of waves until it reaches the other whale. The sound in a waveform provokes a ripple-like effect in the water and travels in the water. The waves are effectively heard in all directions.

Therefore, the correct option for this question is A.

To learn more about Transmission of sound in water, refer to the link:

https://brainly.com/question/18451537

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please Help and Thanks!

Answers

The one that’s already circled in the picture (B)

Deoxyribonucleic acid is also referred to as

Answers

The answer is nucleic acid

Answer:

(DNA) is a molecule that encodes an organism's genetic blueprint

Explanation:

Deoxyribo Is the D

nucleic Is the N

acid Is the A

{DNA}

Hope that helps :)

. Which of the following natural disasters is likely to cause the most widespread damage in a coastal ecosystem?​

Answers

Answer:

Wildfire

Explanation:

Fire go brrrr

A tropical cyclone is a  natural disaster which  is likely to cause the most widespread damage in a coastal ecosystem.

What is ecosystem?

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.

Learn more about ecosystem,here:

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The correct name for P5O2 is

Answers

Answer:

phosphorous(iii) oxide

Explanation:

Hope this helps! :)

What is energy? Write a paragraph describing the following forms of energy: mechanical energy, chemical energy, Sound energy and radiant energy. Include examples of each in your paragraph.

Answers

                                         Answer and Explanation

According to Science J Rank,

__________________________________________________________

Heat Energy

Heat energy is the movement of energy from one object to another. It is also called thermal energy. It can move in three ways: through conduction, convection, or radiation.

__________________________________________________________

Conduction occurs when heat moves directly from one object to another. What happens when you leave your car parked in a sunny parking lot on a hot day? The heat of the sun passes directly through the metal of the car and heats the air (and seats) on the inside.

__________________________________________________________

Energy Hot vehicles in the summer are a form of heat energy.

Convection is the movement of hot liquids or gases. For example, when you boil water, the liquid nearest the flame heats up first. As it gets hot, it rises, and the cooler water goes to the bottom where it gets heated. This continues until the water is boiled.

__________________________________________________________

Radiant Energy

Radiant energy is the energy created through electromagnetic waves, such as light, heat, or radio waves. The sun is our major source of radiant energy because it gives off a great amount of heat and light. Scientists use the electromagnetic spectrum to discuss the types of radiant energy. The electromagnetic spectrum lists all the types of radiant energy by the length of their waves. The shorter the wave, the more energy and heat are created.

__________________________________________________________

Electrical Energy

A huge maze of wires in every house carries electrical energy to do many different jobs, from lighting your home to cooking food.

Electricity starts at the atomic level. Atoms are made up of a nucleus, protons, and electrons. We create electricity by forcing electrons to move from atom to atom. Electrical energy is the movement of electrons through a conductor. A conductor is a material that can carry electricity, like the wiring in homes.

__________________________________________________________

Generators create the electricity used in our everyday lives, but other forms of electric energy occur naturally.

Lightning occurs when electrons are discharged from a cloud. Lightning is so powerful that if we could capture the electricity in a single bolt, it could power our entire home for days.

__________________________________________________________

Static Electricity occurs when an object (or person) gets charged with electrons. You may have experienced this when scuffing your feet on a carpet and then touching a doorknob. The electrons you built up jump from your hand to the metal of the doorknob, causing a powerful shock!

__________________________________________________________

Chemical Energy

Chemicals contain stored, or potential, energy to hold their atoms together. When chemicals are mixed together, a reaction can occur. Chemical energy is the energy released through a chemical reaction.

We can use the heat that these reactions give off. We can use it to cook, to heat our homes, and to burn the gasoline that moves our cars.

One of the major uses of chemical energy is to help produce electrical energy. Coal, gas, and other fuels are burned to run electric generators.

The chemical energy in batteries is changed into the electrical energy we need to run everything from flashlights to toys.

__________________________________________________________

Nuclear Energy

Atoms are so small that until recently even the most powerful microscopes could not see them. Yet when we split the nucleus of an atom, a tremendous amount of energy is released. Nuclear energy is the potential energy stored in the nucleus of an atom.

In a nuclear power plant, a reactor is used to split uranium atoms. This heat is used to turn water to steam. The steam powers a generator that creates electricity.

Nuclear power plants create about 20 percent of the electricity in the United States. Coal, oil, and natural gas help produce the rest.

__________________________________________________________

Hope this helps! <3

__________________________________________________________

Many of the lunar craters are due to volcanic eruptions true or false

Answers

Answer:

false

Explanation:

Craters on the Moon are caused by asteroids and meteorites colliding with the lunar surface. The Moon's surface is covered with thousands of craters. ... It also has very little geologic activity (like volcanoes) or weathering (from wind or rain) so craters remain intact from billions of years.

what atoms are in Au(NO2)2​

Answers

Au, N, O ( give me brainliest please)

What do both plants and animal cells break down for energy?

Answers

Answer:

both plant and animal cells must break down food molecules to get energy from them

Plants and animal cells break down stores glucose & oxygen for energy.

What happens yo temperature in your layer as u you go higher in altitude?

Answers

Answer:

Temperatures decrease with increasing height as the ozone layer is left behind and the air thins out with increasing altitude. The lowest portion of the low-pressure mesosphere is heated by the warm air of the upper stratosphere. This heat radiates upward, getting less intense as altitude increases.

Explanation:

Brainliest please?

Which statement about the alkali metals is correct?
A. They are usually gases.
B. They are extremely unreactive.
C. They are located in the left-most column of The Periodic Table
D. They form negative ions with a -1 charge

Answers

Answer:

its c they are located in the left most column of the periodic table

Please Help! I Really Really Need It!

Answers

Answer:

The picteure isnt lodeing

Explanation:

mark brainly

Please help
As the temperature increases, the molecular motion of the molecules decreases and it
becomes difficult to overcome the polar attractions.
a. TRUE
b. FALSE

Answers

true
step by step explanation:

What are the three types of protist and how are they similar and how are they different (this is science but there is no tab for it)

Answers

Answer:

They are eukaryotic, which means they have a nucleus. Most have mitochondria

Which part of an atom is used to form bonds with other atoms?

Answers

Answer:

valence electrons

Explanation:

valence electrons

Answer:

Covalent bonding

Explanation:

Covalent bonding occurs when pairs of electrons are shared by atoms.

atomic concept map. help me fill this out with the terms on the right. 40 points.

Answers

Answer:

can you like number them please? it would make it a lot easier

Explanation:

Give an example of a trait and explain how a genetic trait is passed down from
parent to offspring in animals.
Your answer

Answers

Explanation:

Parents pass characteristics such as hair color, nose shape, and skin color to their offspring. Not all of the parents' characteristics will appear in the offspring, but the characteristics that are more likely to appear can be predicted.

I'm just trying to answer questions. T^T

Which of the following shows the correct order of the levels of classification form Largest to smallest

Answers

could you put the answee choicesv

d = 24 g/ml
v = 1200 ml
m = ?

Answers

Answer:

28,800 g

Explanation:

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

mass = Density × volume

From the question we have

mass = 24 × 1200

We have the final answer as

28,800 g

Hope this helps you

Please help RN!! It’s due in 10 mins T^T I’ll give brainliest !!

Select the correct location on the image.

Which of these four elements is the most reactive metal?

Answers

Explanation:

the answer is rubidium

Answer:

the answer is Rb

Explanation:

i got it right

True Or False? A magnet slows down because it created an opposing electric force as it fell.

Answers

Answer:

faules

Explanation:

truck it

1, If the “R” under the group title represent the elements in that group, then how any atoms of Na (sodium) will react with 1 atom of O (oxygen).
2. If the “R” under the group title represent the elements in that group, then how any atoms of Na (sodium) will react with 1 atom of H (hydrogen).

Answers

Answer:

NaH one atom of sodium react with one hydrogen to form sodium hydride

Explanation:

boron phosphite
Formula please help fast please please help me please please help

Answers

Answer: The formula for boron phosphite  is  BP

Explanation:

The answer would be BP

Hope this helped!

What is specific heat? How are the factors affecting it?

Answers

Answer : “Amount of heat needed to raise the temperature of 1 kg of a material by 1 c or k.”

Equation used to solve: Q=mc^T

- Change in temp
- Mass of the system
- Subtance and phase of substance

Answer:

Specific heat, ratio of the quantity of heat required to raise the temperature of a body one degree to that required to raise the temperature of an equal mass of water one degree.

Explanation:

by dividing the heat capacity by the quantity of substance in a body, the resulting specific heat capacity is a function of the structure of the substance itself. In particular, it depends on the number of degrees of freedom that are available to the particles in the substance, each of which type of freedom allows substance particles to store thermal energy.

Explain how cross cutting principles (intrusions, inclusions, faults) help to determine the relative age of a rock layer.

Answers

Answer:

The principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts through. ... So the fault must be the youngest formation that is seen. The intrusion (D) cuts through the three sedimentary rock layers, so it must be younger than those layers

Explanation:

The energy that plants need for photosynthesis comes from
OA.
minerals,
OB. sunlight
OC.
oxygen
OD.
water.

Answers

Answer:

OB sunlight

Explanation:

it grows with it

Sodium is a soft, white metal that reacts violently with water. Chlorine is a poisonous yellow-green gas. During the chemical reaction between sodium and chlorine, table salt is produced. Which of the following statements correctly compares and contrasts the reactants with the resulting products used in a chemical equation?

A. The reactants are dangerous and the product can be eaten
B. The reactants and the products observe the law of conservation of mass
C. The reactants are a solid and a gas and the product is a gas
D. The reactants and the products are the same color

Answers

Answer:

B. The reactants and the products observe the law of conservation of mass

Explanation:

The reaction equation is given as:

            2Na  +  Cl₂  →   2NaCl

Such a chemical reactions usually obeys the law of conservation of mass. The law states that "in a chemical reaction, matter is neither created nor destroyed but bonds are rearranged".

So, the most correct thing is that reactants and products observe the law of conservation of mass. The number of atoms on both sides of the expression will be the same. Therefore, option B is correct.  

A rectangular box has the following dimensions on the inside: 5 cm x 5 cm x 10 cm. What volume can the box hold, in milliliters?

- 20 mL
- 259 mL
- 25 mL
- 50 mL

Answers

Answer:

The volume in milliliters is 250mL

Explanation:

The volume of a rectangle is obtained using the equation:

Volume = Length * Width * Height

In the problem, we can take length as 5cm, width as 5cm and height as 10cm. Thus, volume of the rectangular box is:

Volume = 5cm * 5cm * 10cm

Volume = 250cm³

1mL = 1cm³.

That means the volume in milliliters is 250mL

What is the speed of a car that has traveled 100 miles in 20 hours?
|

Answers

Answer:

5 mph

Explanation:

100 miles, 20 hours (divide by 2)

50 miles,    10 hours (divide by 2)

25 miles,    5 hours (divide by 2)

divide both sides by 5

5 miles,     1 hour

Answer:2

Explanation:

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