Plzz help mee asapp dmxkxksms

Answer:

velocity

Explanation:

The definition of acceleration is: Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.

We are given:

Mass of Na added = 4.35 grams

Mass of water = 105 grams

Mass Percent of Na:

Total mass of the solution = mass of solute + mass of solvent

Total mass of the solution = 4.35 + 105 = 109.35 grams

Mass percent of solute = (mass of solute / mass of solution) * 100

Mass percent of Solute = (4.35 / 109.35) * 100

Mass percent = 3.978 %

Answer:

90.21 J

Explanation:

Given that,

Mass of a rock, m = 26.9 g = 0.0269 kg

Speed of the rock, v = 81.9 m/s

We need to find the kinetic energy of the rock. It can be calculated using the formula as follows :

[tex]E=\dfrac{1}{2}mv^2\\\\E=\dfrac{1}{2}\times 0.0269\times 81.9^2\\\\E=90.21\ J[/tex]

So, the kinetic energy of the rock is 90.21 J.

Answer:

NO3-

Explanation:

Given the reaction equation;

Au(s) + 3NO3-(aq) + 6H+(aq)→Au3+(aq) + 3NO2(g) + 3H2O (l).

We can consider the oxidation states of species on the left and right hand sides of the reaction equation;

Au is in zero oxidation state on the left hand side and an oxidation state of +3 on the righthand side.

NO3- is in oxidation state of +5 on the righthand side and NO2 is in + 4 oxidation state.

H+ is in + 1 oxidation state on both the left and right hand sides of the reaction equation.

Since reduction has to do with a decrease in oxidation number, it follows that NO3- was reduced in the reaction.

Answer:

B. The collisions release heat, which results in the heating and subsequent melting, sinking, and rising of materials.

Explanation:

Got it correct on edge

Answer:

the answer is B: The collisions release heat, which results in the heating and subsequent melting, sinking, and rising of materials.

Explanation:

I took the test

Answer:

The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons.  The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of each isotope is multiplied by the abundance of that particular isotope.

Answer:

C. phosphate group

Explanation:

took quiz on edg

Answer:

C

Explanation:

EDGE 2022

Answer:

In the atmosphere carbon is found as carbon dioxide

Explanation:

Answers:

Fission breaks apart nuclei

Fusion puts them together.

======================================================

Explanation:

The term "fission" is related to the term "fissure" which means "a cut or divide", often describing a geologic feature of the earth (eg: a crack in the rock).

Fusion is the idea of putting things together, which is the opposite of fission. The term doesn't have to apply to nuclear fusion. It could be something like the fusing of two ideas to create one new idea.

Answer:

the 2nd one

Explanation:

Answer:

No

Explanation:

The gas will have more volume compared to the liquid.

Gases have no definite shape and no volume. They simply assume the shape of any container they are placed into. They will fill up the entirety of the bottle they are placed into.

Liquids have fixed volume although they do not have fixed shape. As they are held with weak intermolecular interactions, they are limited in space.

Therefore, they will maintain that initial volume at which they were introduced into the container.

Answer:

Yes. u can because its easy to tell if an item will sink or float usually by the weight or the width

Explanation:

Answer:

b) stoichiometry

Explanation:

Stoichiometry is the study of quantitative relationships between the amounts of reactants and products.

Answer: I saw the other question with screen shot Thanks

4. Answer, Like gases, plasmas have no fixed shape or volume, and are less dense than solids or liquids. But unlike ordinary gases, plasmas are made up of atoms in which some or all of the electrons have been stripped away and positively charged nuclei, called ions, roam freely.

5. Answer The energy associated with an object's motion is called kinetic energy. A speeding bullet, a walking person, and electromagnetic radiation like light all have kinetic energy. Another example of kinetic energy is the energy associated with the constant, random bouncing of atoms or molecules.

6.Answer is solid

Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles.

7. Answer Water behaves differently to most other substances because, in its solid state (ice), its particles are less densely packed than in its liquid state. This is why ice floats.

8. Answer 212 degrees F.

Sea Level: Water boils at 212 degrees F. and simmers at 190 degrees F.

9. Answer When an object is heated the motion of the particles increases as the particles become more energetic. If it is cooled the motion of the particles decreases as they lose energy.

10. Answer CHEMISTRY TERM                            PHASE CHANGE

Fusion/Melting Freezing Vaporization/Boilin    Condensation Sublimation Deposition                                                            Solid to a Liquid Liquid to a Solid Liquid to a Gas Gas to a Liquid Solid to a Gas Gas to a Solid

11.  Answer is Energy is consumed (endothermic) to melt ice (solid to liquid) so the opposite process (liquid to solid) must be exothermic.

12.In simple terms, the endothermic reactions absorb energy from the surrounding that is in the form of heat. On the other hand, an exothermic reaction releases energy into the surrounding of the system.

ok alright. But where’s the question?

Answer: Temperature

Explanation: Temperature is a measure of average kinetic energy of particles in an object. The hotter the substance, higher is the average kinetic energy of its constituent particles. When we heat a substance, the particles that constitute the substance gain some energy and begin to move faster.

Answer:

6.02×10^23atoms of au

Answer:

i think 3

Explanation:

Answer:

answer is gonna be B

Explanation:

NaCl+F2= NaF+Cl2

Answer:

Explanation:limestone

CO2 is emitted from the calcination process of limestone, from combustion of fuels in the kiln, as well as from power generation.

Answer:

96.

Explanation:

Explanation:

A reaction with another element

other choices are physical property

Answer:

A. reaction with another element

Answer:

D) Covalent Bonds

Explanation:

Quizlet says so

Among the given options the intramolecular force is covalent bonding. Covalent bond is formed between two nonmetals by sharing of electrons. All other given forces are intermolecular.

A covalent bond is formed between two non-metals through sharing of valence electrons between atoms. For example carbon and oxygen are non metals forming the covalent compound CO.

The number of shared pair of electron depends on the valence of each atoms. For example in HCl, both atoms shares one electron to each other.

In a covalent compound, if the difference in electronegativity between two atoms is significant, the shared pair of electrons attracts towards the highly electronegative atom and resulting charge separation make them polar compounds.

Find more on covalent compounds:

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The elements with standard temperature ,pressure, are the diatomic molecules like hydrogen, nitrogen, chlorine and oxygen.

Two atoms are chemically linked in order to create diatomic molecules. They make up a homonuclear diatomic molecule if the two atoms are the same, such in the oxygen molecule (O2), for example in the case. If the atoms are different.

Diatomic molecules are two-atom-only molecules, which can contain the same or different chemical components. A diatomic molecule is a structure made up of two atoms that were already connected together. Examples include carbon monoxide, oxygen, nitrogen, and hydrogen (H2) (CO).

Thus, hydrogen, oxygen, nitrogen are the element exists as a diatomic molecule at STP.

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Answer:

76.5 grams

Explanation:

Solubility of sodium chloride = [tex]\dfrac{30.6}{100}=0.306\ \text{g/mL}[/tex]

Now volume of water is 250 mL

We have to find the amount of NaCl that can be dissolved in the above mentioned amount of water

Let the mass of NaCl that can be dissolved be m so

[tex]\dfrac{m}{250}=0.306\\\Rightarrow m=250\times0.306\\\Rightarrow m=76.5\ \text{g}[/tex]

The mass of NaCl that can be dissolved is 76.5 grams.

The answer is TRUE

Protons do have positive charge while electrons have a negative charge

Answer:

52.068 amu

Explanation:

To calculate the average atomic mass of chromium, you have to first multiply the abundance of an isotope with its mass.

49.946 × 0.0435 = 2.173

51.941 × 0.838 = 43.527

52.941 × 0.0235 = 1.244

53.939 × 0.095 = 5.124

Next, add up all of the values, and you will get the average atomic mass.

2.173 + 45.527 + 1.244 + 5.124 = 52.068 amu

Answer:the answer is D

Explanation:

I have already taken the exam. Hope this helps

The kinetic energy of the ball is transmitted to the catcher's mitt and the total energy remains conserved.

It is defined as the capability of a body for doing work. Its SI unit is joules. Example - Kinetic energy, potential energy, heat energy etc.

Given is that a ball hits the catcher's mitt.

Now, when ball is in the motion in the air than it is moving with some velocity. Assume that velocity to be v m/s. Then, its kinetic energy will be -

E[K] = 1/2mv²

Therefore, it has kinetic energy. Now as the ball is caught by the player, the ball stops and its kinetic energy is transmitted into the player's mitt. From law of conservation of energy

E[K] + E[mitt] = E[mitt] + E[K]

1/2mv² + 0 = 1/2mv² + 0

So the energy is conserved and transferred.

Thus, the kinetic energy of the ball is transmitted to the catcher's mitt.

Therefore, the kinetic energy of the ball is transmitted to the catcher's mitt and the total energy remains conserved.

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