will mark BRAINLIEST!!!

Answer:

Helium

Radon

and Neon

Explanation:

Answer:

(SrSe) | SeSr - PubChem.

Explanation:

Answer:

Yeah take a pic or somethin

Explanation:

Answer:

Cambrian

Explanation:

The fossil from the Cambrian is older than the one from the Triassic. This is because in the geologic time scale, the Cambrian is older than the Triassic.

Answer:

[tex]\huge\boxed{\sf Acid}[/tex]

Explanation:

An acid has the following properties:

=> Is corrosive to Iron and reacts with it.

=> Has a sour taste.

=> Produces a burning sensation when touched.

So, Substance A is an acid.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

The number of atoms on both sides of the expression is not balanced

Explanation:

Stated equation:

         KClO₃  →   KCl    +  O₂

The equation above does not obey the law of conservation of mass because the atoms on both sides of the expression are not the same.

The law of conservation of mass states that "in a chemical reaction, atoms are neither created nor destroyed, but are transformed by combining with one another";

                                                             Number of atoms

       Elements            Left hand side                                Right hand side

             K                             1                                                         1

             Cl                            1                                                         1

              O                            3                                                        2

We see that the number of oxygen on both sides of the expression differs.

Answer: It is B.) 1s^22s^12p^1

Explanation: mind giving me brainliest? :)

Answer:

ñanamaisañia ñanamaisañia

Explanation:

n

Answer:

Saturated is the answer you are looking for

Explanation:

This is saturated's meaning: holding as much water or moisture as can be absorbed; thoroughly soaked.

"a mass of saturated air decreases in temperature as it rises in the atmosphere" Hence why the answer is saturated! :)

Hope this helps! :)

Answer: Saturated

Explanation: On Edge!!!!!!!!!!!!!

Explanation:

An atom is made up of three fundamental subatomic particles which are:

Protons are the positively charged particles in an atom. They are found in the nucleus of the atom.

Neutrons do not carry any charges, like the protons, they occupy the tiny nuclear space.

Electrons are positively charged particles and they occupy the extra-nuclear space of the atom.

Answer:

Depends, you have to give us a table, let me explain how to answer this.

Explanation:

“Inside the nucleus,” because the particle is a proton

For this to be true, it has to have a mass (amu) of 1 and it has to have a positive charge

“Inside the nucleus,” because the particle is a neutron

For this to be true, it has to have a mass (amu) of 1 and it has to have a neutral charge

“Outside the nucleus,” because the particle is a proton

This is instantly wrong because protons are located in the nucleus

“Outside the nucleus,” because the particle is an electron

For this to be true, it has to have a mass (amu) of 1/2000 and it has to have a negative charge

Answer:

positively charged -protons

Negatively charged-electrons

Answer:

Different objects float at different levels in the water because as most regular objects are lowered into the surface of water, the upward push of the water steadily increases until it is in balance with the weight force of the object, and the object then continues floating at this level with the two forces in balance.

A.  Acceleration is positive and speed is increasing.

The motion performed by a runner is part of a uniformly accelerated motion with constant acceleration.

Equation used  

[tex]\tt \boxed{\bold{v_f=v_i+at}}[/tex]  

vf = final velocity  

vi = vo = initial velocity  

When a runner moves from rest, his speed will increase from being at rest (vi=0) and then move with a constant acceleration(a), and as soon as he crosses the finish line his acceleration will decrease (experience a deceleration ⇒a=- ) and decrease his speed until it finally stops

Velocity and speed are different because velocity itself is a vector quantity that takes into account direction and displacement, while speed is a scalar quantity (only distance).

So the speed does not take positive or negative values because it involves direction, while acceleration takes positive and negative values (deceleration) because it takes direction.

Answer:

B

Explanation:

because an atom is the smallest particles that have electrons, neutron and protons

a. The symbol [tex]\tt _{11}^{23}Na[/tex], [tex]\tt _{18}^{40}Ar[/tex], [tex]\tt _{15}^{31}P^{3-}[/tex], [tex]\tt _{13}^{27}Al^{3+}[/tex]

b. Isotope of Na

Atomic number=number of protons=number of electrons(neutral atom)

Number of neutrons=mass number-atomic number

Mass number=protons+neutrons

B. atomic number=11, mass number=11+12=23⇒Sodium

[tex]\tt _{11}^{23}Na[/tex]

C. atomic number=18, mass number=18+22=40⇒Argon

[tex]\tt _{18}^{40}Ar[/tex]

D. atomic number=15, mass number=15+16=31, charge -3(electron-proton)⇒Phosphor

[tex]\tt _{15}^{31}P^{3-}[/tex]

E. atomic number=13, mass number=13+14=27, charge +3(proton-electron)⇒Aluminium

[tex]\tt _{13}^{27}Al^{3+}[/tex]

Isotope=the same atomic mass, different neutron(mass number)

So the atom⇒isotope of Sodium(Na)

Answer:

2.3 / yes

Explanation:

edg 2020

Answer: 2.3 and yes

Explanation:

Answer:

B

Explanation:

It is B because it's neatly cut into two parts, 50 and 50. That still adds up to 100 its the same total amount just cut up. So, 100 kg

Answer:

its B. 100 cleanly cut in half is 50/50. but it's still gonna be 100 total.

Explanation:

Answer:

A substance that is present at the end of a chemical reaction.

Respuesta:

16 gramos de vitamina C y 8 gramos de colorantes.

Explanation:

Debemos multiplicar el porcentaje de cada componente por la cantidad total (100 %) de zumo.

800 g de zumo = 100%

- Tenemos un 2 porciento (2 en 100 o 2/100) de vitamina C. Por lo tanto, la cantidad en gramos de vitamina C es:

2/100 x 800 g = 16 g

- Tenemos un 1 porciento de colorantes en el zumo (1/100). Por lo tanto, la cantidad en gramos de colorantes es:

1/100 x 800 g = 8 g

Answer:

Answer is C because in exothermic reactions, energy releases.

in Cellular respiration,

ATP+H20 (water) = ADP+ Pi + Energy

So celullar respiration is exothermic and releases energy

Answer:

yes it is

Explanation:

because what ever you mix in it it would explode and give a chemical reaction

Answer:

Newtons Second law of motion

Explanation:

Answer:false

Explanation:matter cannot be created or destroyed in a chemical reaction it is rearranged

Answer: A. a large nail rusting

Explanation:

Answer:

Q = 5350.2 Joules.

Explanation:

Given the following data;

Mass, m = 26. 5g

Initial temperature, T1 = 0°C

Final temperature, T2 = 48.3°C

Specific heat capacity of water, c = 4.18 J/g°C.

*To find the quantity of heat*

Heat capacity is given by the formula;

[tex] Q = mcdt[/tex]

Where;

dt = T2 - T1

dt = 48.3 - 0

dt = 48.3°C

Substituting the values into the equation, we have;

[tex] Q = 26.5*4.18*48.3[/tex]

Q = 5350.2 Joules.

Therefore, the amount of heat absorbed is 5350.2 Joules.

Answer:

This question is incomplete

Explanation:

This question is incomplete as the volume of the base that was used during the titration was not provided. However, the completed question is in the attachment below.

The formula to be used here is CₐVₐ/CbVb = nₐ/nb

where Cₐ is the concentration of the acid = unknown

Vₐ is the volume of the acid used = 25 cm³ (as seen in the question)

Cb is the concentration of the base = 0.105 mol/dm³ (as seen in the question)

Vb is the volume of the base = 22.13 cm³ (22.1 + 22.15 + 22.15/3)

nₐ is the number of moles of acid = 1 (from the chemical equation)

nb is the number of moles of base = 2 (from the chemical equation)

Note that the Vb was based on the concordant results (values within the range of 0.1 cm³ of each other on the table) of the student

Cₐ x 25/0.105 x 22.13 = 1/2

Cₐ x 25 x 2 = 0.105 x 22.13 x 1

Cₐ x 50 = 0.105 x 22.13

Cₐ = 0.105 x 22.13/50

Cₐ = 0.047  mol/dm³

The concentration of the sulfuric acid is 0.047  mol/dm³

When the North Pole of one bar magnet is near the South Pole of another bar magnet, they will attract each other. So, the correct option is C, attraction. This is because opposite magnetic poles attract each other, while like magnetic poles repel each other.

A magnetic field is a region in space where a magnetic force can be detected. It is created by the movement of charged particles, such as electrons, protons, and ions. A magnetic field can be produced by a magnet, an electric current, or a changing electric field.

When the North Pole of one bar magnet is near the South Pole of another bar magnet, they will attract each other. This is because the magnetic field lines of the two magnets interact in such a way that they try to align with each other. Since opposite magnetic poles attract each other, the North Pole of one magnet will be attracted to the South Pole of the other magnet.

The magnetic force between the two magnets depends on the strength of the magnetic field and the distance between the magnets. The closer the magnets are, the stronger the magnetic force will be.

Therefore option C, attraction is correct.

To learn more about The magnetic field:

https://brainly.com/question/23096032

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