help me i will chose brainiest

Answer:

B. Istope

Explanation:

Answer:

no

Explanation:

Answer:

Excited state

Explanation:

Answer:

here is your answer

Explanation:

1. sodium sodium is very reactive metal

2. when it exposed in air it automatically form Na2O.

3. when when it put in water it reacts visoroustly and start burning on water.

( due to this it is called active element)

Answer:

the answer I am pretty sure is A

Explanation:

Because the way that a generator works is moving electric current around a wire and using magnets to make more energy. please tell me if I am wrong.

Answer: A

Explanation: Because the way that a generator works is moving electric current around a wire and using magnets to make more energy.

Answer:

C.. one enegry level..

Answer:

chemical energy

Explanation:

cordless power saw has rechargeable battery attached to it.

and we know storage energy in battery is chemical hence cordless power saw has chemical energy present in it.

When the saw is operated, the chemical energy is converted into electrical energy which causes the motor fitted in power saw to move.

Thus,

in cordless power saw

chemical energy is converted into electrical energy

electrical energy is converted into mechanical energy.

Answer:

uhm-

Explanation:

chile, anyways so-

Answer:

80C

Explanation:

As a substance gets hotter, or as a substance gets closer to the state of gas, the particles in the substance move faster, become more spread out and have more energy. This is why Gas has the most energy while solids have the least. Therefore, the hotter a substance is the more energy it has.

A glass of water at 80°C will have the most amount of energy

Explanation:

So, from this, we can conclude that glass with water at a higher temperature that is 80°C will have a  higher amount of energy than a glass of water at 20°C.

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Answer:

8.4 m/s

Explanation:

Initial velocity of the object is 0 as it was at rest.

We need to find the object’s average velocity during the 3 second to 5 second.

We can see from the graph that from 3 s to 5 s, the graph is a straight line. If we take the slope we can find the average velocity during the 3 second to 5 second.

Displacement between 3 s to 5 s is :

D = 24.8 m - 8 m = 16.8 m

Time = 5 s - 3 s = 2 s

Now,

Average velocity,

[tex]v=\dfrac{\Delta y}{\Delta x}\\\\y=\dfrac{16.8\ m}{2\ m}\\\\y=8.4\ m[/tex]

So, the object’s average velocity during the 3 second to 5 second is 8.4 m/s.

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume}\\[/tex]

From the question

mass = 57.9 g

volume = 3 cm³

We have

[tex]density = \frac{57.9}{3} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

  liquid

Explanation:

If there are no s-waves, the interior must be liquid, where s-waves cannot travel.

Answer:

The Moon’s appearance changes during its orbit around Earth. These changes are called phases.

Explanation:

Answer:

position, speed and acceleration

Answer:

1

Explanation:

Asexual reproduction is the ability of an organism to produce offspring identical to themselves.

In asexual reproduction,  the number of parents is one, and the generation of offspring is genetically identical to a single parent. Therefore, row (1) best describes asexual reproduction.

Asexual reproduction can be described as a mode of reproduction in which a new offspring is generated by a single parent. The new individuals generated are genetically and physically identical to each of their parents. Asexual reproduction can be defined as the mode of reproduction in which the production takes place of offspring by a single parent.

Asexual reproduction can be observed in both multicellular and unicellular organisms. This process does not include gamete fusion and no change in the number of chromosomes either. Asexual reproduction will inherit the same genes as the parent.

Characteristics of Asexual Reproduction are single parent, no fertilization takes place, occurs in a very short time, and grows rapidly. The offspring in asexual reproduction is genetically similar.

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Answer:

Breathe. Breathing is the number one thing every human does, and their bodies need it. Think about going in a pool in 6 feet. You realize that its kinda hard to breathe and it feels like something is holding your chest down really hard. Water pressure and air pressure can affect the breathing habits of a human and can also cause suffocation to the lungs.

Explanation:

please give brainlyest

Answer:

pints

Explanation:

Answer:

B: pints

fl.oz.

Explanation:

Answer:

It's pitch

Explanation:

I play violin and it would be the same. Pitch is how high a note is. A B in treble clef is higher than a G

Answer:

I just finished a unit on Scientific Method in my science class! Anyway, it's defined in the screenshots below. Hope this helps!

Answer:

If you increase the concentration of a reactant, there will be more of the chemical present. More reactant particles moving together allow more collisions to happen and so the reaction rate is increased. The higher the concentration of reactants, the faster the rate of a reaction will be.

The geometry of PBr₃ is trigonal pyramidal. Therefore, option A is correct.

Trigonal pyramidal geometry refers to the molecular geometry around a central atom in a molecule or ion where there are three bonded atoms and one lone pair of electrons. This geometry is commonly found in molecules with a central atom surrounded by three bonding pairs and one non-bonding pair of electrons.

The term "trigonal" refers to the arrangement of the three bonding pairs, which are positioned in a flat, triangular shape around the central atom. The term "pyramidal" indicates that the lone pair of electrons occupies the fourth position, giving the molecule a three-dimensional pyramid-like shape.

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Answer:

the analysis of the relationships between different physical quantities by identifying their base quantities and units of measure and tracking these dimensions as calculations or comparisons are performed.

Explanation:

Answer:

C. Asthenosphere

Explanation:

If a large office building is 1.07 x 10^2 meters long, 31 meters wide. and 4.25 x 10^2 meters high, then the volume of the building would be 1409725 meters cube.

It can be defined as the mass of any object or body per unit volume of the particular object or body. Generally, it is expressed as in gram per cm³ or kilogram per meter³.

As given in the problem we have to calculate the volume of a large office building having the dimensions of  1.07 x 10 ^2 meters long,  31 meters wide, and 4.25 x 10^2 meters high.

The volume of the office building = length × width × height

                                                        =107 × 31 × 425

                                                        =140925 meters cube

Thus, the volume of the building would be 140925 meters cube.

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Answer:

C. I

Explanation:

The elements are categorized in groups and periods. The periods are horizontal and the groups are vertical. The elements in the same group (vertical) have very similar characteristics.

Answer:

5 g/cm^3

Explanation:

density = mass/volume

20/4 = 5

Answer:

d. compounds and elements

Explanation:

a pure substance is when something is made up of one type of thing, whether it be elements, where they are made up of one type of atom or a compound, where its atoms are chemically bonded and cannot be broken down by physical means

Answer:

Your lungs deliver oxygen and remove carbon dioxide from your blood in a process called gas exchange. Gas exchange happens in the capillaries surrounding the alveoli, where the oxygen that is breathed in enters the circulatory system and carbon dioxide in the blood is released to the lungs and then breathed out.

Answer:

bonding electron

Explanation:

because they will bond together.