Science helPPPPPPPPP MEEEEEEEEE RIGHT NOW

Answer:

true.

Explanation:

Carbon is an essential element for all life forms on Earth. Whether these life forms take in carbon to help manufacture food or release carbon as part of respiration, the intake and output of carbon is a component of all plant and animal life. Carbon is in a constant state of movement from place to place.

Answer:

Tbh I rlly don’t kno why

Explanation:

These ppl are waxk

Answer:

partially filled d sublevels

Explanation:

Answer: Stays the same

Explanation:

The amount of water on the earth never leaves or runs out, so there will always be water. When water disappears, its just the process of evaporation. When water is evaporated into water vapor (gas state of matter), and the molecules are scattered through the air. Making the air humid, although you can not see the molecules, not even with a microscope.

In the modern periodic table, the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).

hey there ! :

Density = 8.94 g/mL

mass = 34 g

Volume = ??

Therefore:

D = m / V

8.94 = 34 / V

V = 34 / 8.94

V = 3.803 mL

Hope this helps!

Answer:

Nuclear reactions involve a change in an atom's nucleus, usually producing a different element. Chemical changes involve only a rearrangement of electrons.

Explanation: Hope this helps

Brainliest?

Answer:

Chemical Reaction

Atoms are rearranged during a chemical change to create a new substance The new substance is formed during a chemical reaction cannot be changed back to its original state During a chemical reaction, the chemical bonds are broken and new chemical bonds form

Nuclear Reactions

Nuclear reactions are defined as the reaction in which there occurs change in the nucleus of an atom due to change in number of protons or neutrons of an atom.

Explanation:

Answer:

Artistic expression

Explanation:

Think of it as the control panel of our personality and our ability to communicate

Answer:

All systems work together to stabilize the body.

Explanation:

Homeostasis refers to the ability of the body to maintain a stable internal state despite the changes in the external environment. Among the options, option A, explains it bests.

Option B: This answer is partly correct in the sense that stability is achieved, however the systems work together and not independently.

Option C: This option is wrong. Stability is the goal and not matching the external environment.

Option D: This option is wrong. Stability is the goal and not matching the external environment.

The best explains how the body maintains homeostasis is all systems work together to stabilize the body.

Homeostasis is a condition in which a biological system changes its condition suitable to the environment. It is needed to survive and function properly.

Thus, the correct option is A.

Learn more about homeostasis

https://brainly.com/question/3888340

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Carbon can react with oxygen to form carbon dioxide. Which of the following statements about this chemical change is true? ... Carbon and oxygen atoms are destroyed as new atoms are formed. Carbon and oxygen atoms have the same properties as molecules of carbon dioxide.

Answer:

25

Explanation:

This questoin about physics but solution is there

Kinetic energy = 1/2 . m. V. V

m=weight

V=velocity

1/2 . 2. 25 = 25

Answer:

That they are miscible in one another

Answer:

dang this hard I don't understand...

Answer:

Evaporation

Explanation:

Answer:

Boiling

Explanation:

The temperature at which a liquid begins to boil is called the boiling point (bp).

Answer:

could you please provide more info for the question you want an answer for?

Explanation:

Answer:

With the addition of heat, liquid particles move faster, decreasing viscosity. However, the addition of heat to gas particles causes them to collide with each other more often, increasing the viscosity. ... Particles with larger size and shape collide more often, increasing internal friction.

Explanation:

hope this helps you !!

Answer:

4

Explanation

It states there is two before the Li, and I ruled out three because four is the only number that goes after the particles that stands alone, the three means that there are three particles of N4

Answer:

True

Explanation:

Answer:

This question lacks options. The options are:

A. The two substances underwent a physical change

B. The two substances were melting

C. A new substance was forming

D. A change in the mass of the two substances

The answer is C

Explanation:

Changes in chemistry can either be physical or chemical. A physical change as the name implies does not alter the chemical content of the susbtances involved. However, chemical changes affect the chemical composition of the substances, hence, new substances are produced.

A chemical change is also characterized with a color change, temperature change, gas evolution etc. In this question, Mia mixed two substances in a test tube and noticed that the test tube became warm, gas came out from the test tube. This implies a CHEMICAL CHANGE, LEADING TO THE FORMATION OF NEW SUBSTANCES.

Answer:

the positivity charged protons in the nucleus attract the negatively charged elections.bas the number of protons in the nucleus increases, the electronegativity or attraction will increase

Answer:

The law of the conservation of mass states that matter is neither created nor destroyed, only converted to other forms. Therefore, the mass never changes, even if its appearance does.

Explanation:

Answer:

[tex]d=1.69\times 10^{-3}\ g/mL[/tex]

Explanation:

Given that,

Mass, m = 0.186 g

Volume occupies, V = 110 mL

We need to find the density of Nitrogen gas. The mass per unit volume is called density of an object. It is given by the formula as follows :

[tex]d=\dfrac{m}{V}\\\\d=\dfrac{0.186\ g}{110\ mL}\\\\=1.69\times 10^{-3}\ g/mL[/tex]

So, the required density is [tex]1.69\times 10^{-3}\ g/mL[/tex].

Answer:

6

Explanation:

Answer:

0.32mole

Explanation:

Given parameters:

  Mass of tin cup  = 38.1g

Unknown:

Number of moles in the cup  = ?

Solution:

To find the number of moles, use the expression below;

 Number of moles  = [tex]\frac{mass}{molar mass}[/tex]

Molar mass  = 118.7g/mol

  So;

 Insert the parameters and solve;

Number of moles  = [tex]\frac{38.1}{118.7}[/tex]   = 0.32mole

Answer:

I believe it is the last option: atoms

Answer:

The Answer to your question is

A. the metal mixture began to separate

Explanation

Just took the quiz

Answer:

the answer is C in usatestprep 1,11,and 111

Explanation:

Answer:

During the recharge process, the water infiltrates at the land's surface and flows through the unsaturated zone. It then crosses the water table and enters the groundwater system. Chloride (NaCl) is important and necessary because the sodium ions are held loosely and exchanged easily with calcium and magnesium ions.

Explanation:

Answer:

mountains and continental drift seafloor spreading

Explanation:

A

B

C

Answer: The electrons move around between the two atoms. their positive nuclei repel each other. A covalent bond is an electric force of attraction between two atoms that share outer electrons.

Explanation: I hope that helps.

For better understanding let's explain what the statement means.

From the above we can therefore say that the answer the movement of the electrons different when the atoms are close because when two atoms are very close to each other, the electrons of each atom will then be attracted to both nuclii. If the atoms tries to get two close then the nuclii will repell each other is correct

Learn more about Electron movement from:

https://brainly.com/question/772555

Answer:

96.11 g/mol

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

(NH₄)₂CO₃

Step 2: Identify

Molar Mass of N - 14.01 g/mol

Molar Mass of H - 1.01 g/mol

Molar Mass of C - 12.01 g/mol

Molar Mass of O - 16.00 g/mol

Step 3: Find

Molar mass of (NH₄)₂CO₃ - 2(14.01) + 8(1.01) + 12.01 + 3(16.00) = 96.11 g/mol

Answer: 96 g is the molar mass of (Nh4)2CO3

Explanation: