A geologist visits Jessica’s classroom. He shows the class a diagram of different landforms. Which of the landforms is created by earth materials being deposited?
A. Cave
B. River delta
C. Canyon
D. Mountain

Answer:

Explanation:

2 or 3 is correct

Answer: 3.0 moles

Explanation:

Answer:

The three main cycles of an ecosystem are the water cycle, the carbon cycle and the nitrogen cycle. These three cycles working in balance are responsible for carrying away waste materials and replenishing the ecosystem with the nutrients necessary to sustain life.

Explanation:

cycles such as the water cycle keep the earth hydrated by feeding rain to trees, plants, etc.

Answer:

I think these are the 5 periodic tables.

Answer and Explanation:

D. I think..

Answer:

15.4 moles

Explanation:

15.4 moles

Answer:

The major function of the vertebral column is protection of the spinal cord; it also provides stiffening for the body and attachment for the pectoral and pelvic girdles and many muscles. In humans an additional function is to transmit body weight in walking and standing.

Explanation:

MARK ME BRAINLIEST :)

Answer:

[tex]K_{2}CrO_{4} + Pb(NO_{3})_{2} >> 2 KNO_{3} + PbCrO_{4}[/tex]

Reactions:

[tex]K_{2}CrO_{4} + Pb(NO_{3})_{2} >> KNO_{3} + PbCrO_{4}[/tex]

Explanation:

In the reaction, the CrO4(Chromate)  is a compound NO3(Nitrate) is a compound as well.

Ignore the number in front of the reaction first, calculate how many K, Cr, O, Pb and N in the equation for both left and right side.

Left side:   K=2, Cr=1, Pb=1, N=2, O=10

Right side: K=1, Cr=1, Pb=1, N=1, O=7

So we need 3 more oxygen, 1 more nitrogen and 1 more potassium on the right.

If we add a 2 in front of KNO3, there will be 2 potassium, 2 Nitrogen and 6 oxygen, which the reaction complete.

Conclusion:

[tex]K_{2}CrO_{4} + Pb(NO_{3})_{2} >> 2 KNO_{3} + PbCrO_{4}[/tex]

Answer:

63.546

Explanation:

The Average atomic mass is calculated using the formula:

sum of the product of the atomic masses and their relative abundances all divided by 100 or total abundance

Answer:

False

Explanation:

Many abused drugs are prescription drugs.

Answer:

The Northern Hemisphere is tilted toward the Sun in summer is the correct answer.I hope this helps

Explanation:

Day turns into darkness as the Earth spins, and summer turns into winter when the Earth completes its whole cycle. Therefore, the Northern Hemisphere is tilted toward the Sun in summer. The correct option is option B.

The circular motion of an item about its center is referred to as rotation. Things can spin in a variety of ways.  When a round, three-dimensional object rotates around an imaginary line inside of its center, it is a relatively common type of rotation. This focal point is known as an axis.

The Earth's rotation and revolution effect wind patterns, temperature, ocean currents, and precipitation, which together determine our local weather and the planet's overall climate. the Northern Hemisphere is tilted toward the Sun in summer.

Therefore, the Northern Hemisphere is tilted toward the Sun in summer. The correct option is option B.

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Answer:

gold has 79 protons

Explanation:

i looked it up lol

Phosphoric acid, also known as orthophosphoric acid or phosphoric(V) acid, is a weak acid with the chemical formula H3PO4.

Answer:

disminuyne

Explanation:

Answer:

its a

Explanation:

Answer:

c

Explanation:

Answer:

B.

lithium and chlorine

Explanation:

Ionic bonds are typically formed between a metal and nonmetal. Lithium is an alkali metal in group one and chlorine is a halogen from group seven. They will bond to form the salt, lithium chloride.

Answer: the heat is rapidly changing

Explanation: as the heat continues to rapidly change so does the chemical as it also starts to change, so in a way you could use the example of a skateboard moving. This is because theres also friction in the skateboard which is made from the two things moving together and the heat is slowly increasing causing a reaction to the skateboard wheels so in a way it can cause more rapid changes

With the increase in heat or temperature, the rate of reaction will increase as more molcules will get kinetic energy for effective collisions.

The rate of reaction can be d as defined the speed at which the products are fromed from the reactants. The rate of a reaction provides information on how much time under which a chemical reaction can be completed.

The rate of a chemical reaction can be defined as the speed of the conversion of the reactants into products with time. Some reactions are instantaneous, while some chemical reactions take time to achieve the final equilibrium.

In some reactions, a catalyst can be used to increase the rate of the reaction.  The catalyst provides the speed to the reaction in both forward and backward reactions by lowering the activation energy.

The pressure of the gaseous reactants increases, and the concentration of gases results in an increase in the rate of reaction.  With an increase in the temperature, the average kinetic energy of the reactant molcules will be raised.

Therefore, more molecules will go under effective collisions. Therefore, the rate of reaction will be increased.

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Answer:yes

Explanation:

Because modern periodic table is designed in such a way that it can accomodate any new elemet which may be discovered in future

We have that for the Question "when and if element 119 is discovered predict where it would be placed on the modern periodic table" it can be said that With the existing information the element 119 will most likely be i the 8th period and the first group of the periodic table

From the question we are told

when and if element 119 is discovered predict where it would be placed on the modern periodic table

Generally

The Periodic table is naturally designed to accommodate new elements based on there properties

Therefore

With the existing information the element 119 will most likely be i the 8th period and the first group of the periodic table

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Answer: (D) it is not spontaneous.

Answer:

A

Explanation:

because they both belong to the Same group eight

Answer:

yeast

Explanation:

sorry if incorrect

Answer:

For Q1: H+

For Q2: OH-

for Q3: Apple juice

For Q4: bleach

For Q5: 0-6

For Q6: 8-14

For Q7: Sour

For Q8: Corrosive

For Q9: Slippery

for Q10: Bitter

Explanation:

Answer:

Pb3O4

Explanation:

According to this question, 3.425g of lead oxide was reduced to form 3.105g of lead in an experiment. Since lead oxide contains both lead (Pb) and oxygen (O) element,

Mass of lead oxide = 3.425g

Mass of lead = 3.105g

Mass of oxygen = (3.425g - 3.105g) = 0.320g

Next, we convert each mass value to mole by dividing by respective molar mass

Pb = 3.105g ÷ 207.2 = 0.0149mol

O = 0.320g ÷ 16 = 0.02mol

Next, we divide each mole value by the smallest (0.0149)

Pb = 0.0149mol ÷ 0.0149mol = 1

O = 0.02mol ÷ 0.0149mol = 1.342

Multiply each ratio value by 3 to get:

Pb = 1 × 3 = 3

O = 1.342 × 3 = 4.026

The whole number ratio, approximately, of Pb and O is 3:4, hence, their empirical formula is Pb3O4.

Answer:

c

Explanation:

Answer:

94.15

Explanation:

Answer:

c

Explanation:

because the sun is at the center of the universe the planet orbit the sun its basically a simple answer so if you need more help im right here

The sun and the planets are part of the solar system. The sun is in the center of the system, and the planets revolve around it. Thus, option C is correct.

A solar system is a part of the Milky Way galaxy that includes the planets, stars, sun, moon, asteroids, etc. The Sun is the star that is fixed at the center of the system.

The planets are not fixed and revolve in orbit around the sun and rotate on their axis. The sun and planets are made up of gases and have different atmospheres.

Therefore, option C. sun is at the center around which the planets revolve.

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The matter is made up of various types of particles which have a physical state and have inertia.

1. Matter is colour less. (false)

2. Matter is hard in structure. (true)

3. Matter is soluble. (true)

4. Matter can not conduct electricity. (false)

5. Matter has boiling point but not melting point. (false)

6. Matter has both boiling and melting point. (true)

7. Matter has not the density. (false)

8. Matter has the malleability. (true)

Matter is made up of different kinds of particles which can occupy space and they have some mass. All the matters are made up of the elements. The elements contain specific physical and chemical properties. the matter can not be broken by any ordinary chemical reaction.

So we can conclude that the matter is made up of various types of particles which have a physical state and have inertia.

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Answer:

forms an ionic bond. Potassium and iodine have very different electronegativities. The two atoms would form an ionic bond since ionic bonds form between atoms with a large difference in electronegativity

Explanation: look it up