Plz help I’m getting timed

Answer:

Boiling water- When water boils, the heat passes from the burner into the pot, heating the water at the bottom. This hot water rises and cooler water moves down to replace it, causing a circular motion. ... ice melting - Ice melts because heat moves to the ice from the air.

Explanation: mark me brainlliest pls (also hopes this helps!!)

A radioactive decay is occurring by the emission of charged particles such alpha or beta to form a new stable atom with changes mass number and atomic number.

Heavy unstable radioactive elements undergo nuclear decay by which they form a stable isotope or new atom with changed atomic number. There are two types of nuclear decays mainly. They are alpha decay and beta decay.

During alpha decay isotopes with higher mass number undergo alpha emission and forming a new species with mass number reduced by 4 units and atomic number reduced by 2 units.

In the case of beta- decay, electrons are emitted from the atom and then forming a new atom with atomic number increased by one unit. For an electron capture process, an electron is captured to the atom forming an element with atomic number reduced by one.

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the products are:

CaCO3 Calcium Carbonate

CO2 carbon dioxide

NaCI Sodium chloride

H2O​ Water

Answer:

When oil and lye are combined and heated, the result is soap. This chemical reaction is called saponification. Without lye, saponification isn’t possible, so lye is necessary to create soap.

Answer:

The substances present after the reaction are called products.

Explanation.

They are called reactants at the start of the reaction.

Answer:

In the first law, an object will not change its motion unless a force acts on it

In the second law, the force on an object is equal to its mass times its acceleration

In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

Explanation:

Hope this helped :)

Answer:

K₃PO₄ + 3HCl ⇒ 3KCl + H₃PO₄

Explanation:

practice these, it gets easier. goal is to match the amount of reactants and products on both sides of the equation. cheers!

Answer

We are currently working on a dataset of war and large-scale violent events over the long run. If you want to contribute to this research please get in touch.

Explanation:

Answer:

atoms 1 and 4

Explanation:

Answer:

a weighing balance, a measuring cylinder, a spatula, a beaker/flask, and a stirrer

Explanation:

The lab apparatus that would be needed to prepare a solution of sodium chloride would be a weighing balance, a measuring cylinder, a spatula, a beaker/flask, and a stirrer.

The weighing balance would be used to weigh out the required amount of sodium chloride. The beaker or flask would be placed on the weighing balance and its weight zeroed. The spatula would then be sued to take out the sodium chloride from its container into the beaker till the required amount is reached. The measuring cylinder would then be used to measure out the required volume of water which would be added to the salt in the beaker. The stirrer would then be used to stir the mixture in order for the salt to dissolve.

Answer:Alaska

Explanation:

Answer:

The principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts through. ... So the fault must be the youngest formation that is seen. The intrusion (D) cuts through the three sedimentary rock layers, so it must be younger than those layers

Explanation:

Answer:

The charge is +3

Explanation:

In Fe₂(SO₄)₃ the global charge is 0.

As we know, the sulfate ion, SO₄, has a charge of -2, as there are 3 SO₄ ions in the molecule, the global charge is -2*3 = -6. To solve for the charge of Fe we can use:

2Fe - 6 = 0

2Fe = +6

Fe = +3

Answer:

+3

Explanation:

Answer:

In chemistry, a product is a substance that is formed as the result of a chemical reaction. In a reaction, starting materials called reactants interact with each other.

Explanation:

Answer:

water, H20

Explanation:

From the given choices, only water has two unshared or lone pairs of electrons in its central atom.

The formula of water is:

              H₂O

H is hydrogen with 1 electron

O is oxygen with 8 electrons and 6 valence electrons

To form the covalent bond, the 6 valence electrons are involved. Two out of the 6 bonds with the two oxygen.

The remaining 4 gives the two lone pairs.

Answer:

c. 2

Explanation:

The alkaline earth family is the second most reactive group, and it's elements can't be found free in nature. They are called "alkaline" earth metals because they form "alkaline" solutions, hydroxides, when they react with water

Answer:

A. 140,800 J

Explanation:

Specific heat of a material is defined as the amount of energy required to increase in 1°C 1kg of the material. For wood there are required 1760J perkg per °C.

The equation is:

Q = C*m*ΔT

Where Q is heat in Joules,

C is specific heat (1760J/kg°C),

m is mass (2kg)

ΔT is change in temperature (50°C - 10°C = 40°C)

Replacing:

Q = 1760J/kg°C*2kg*40°C

Q = 140800J

Right option is:

Answer:

A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere. Plate size can vary greatly, from a few hundred to thousands of kilometers across; the Pacific and Antarctic Plates are among the largest.

Answer:Using a makeshift workspace, Marie Curie began, in 1897, a series of experiments that would pioneer the science of radioactivity, change the world of medicine, and increase our understanding of the structure of the atom

Explanation:

Answer: B

Explanation:

Answer:

I would give the person I care about the most all my love, time, attention, and respect. It's the only thing that I can give to anyone.

Explanation:

Answer:

I would give it to my mom.

Explanation:

I would give her a lot tbh, but something not too crazy... would be a really nice/pretty necklace or some sort of jewelry.

i would give her a lot, because she deserves so much, she shouldn't have been through the things that she did. And I love her a lot! soo... yeah!

Have a nice day! ( ﾟдﾟ)つ Bye

And make sure that she is, and some other people are always happy, because they deserve so much better

Answer:

0.0000098 should be the answer

Explanation:

Answer:

Atomic number

Explanation:

Because atomic number is unique for each element and never changes

Answer:

net force. sjiejsnssjwjehw

Answer:

net force or result force

Explanation:

mark brainliest please

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question we have

mass = 24 × 1200

We have the final answer as

Hope this helps you

Electron is negatively charged particle. When building electric circuits electron flow along the path. so, option C is correct.

Electrons are fundamental to many physical processes, including gravity, electromagnetic interactions, weak interactions, electricity, magnetism, chemistry, and thermal conductivity.

The outer shells of atoms in the common items you encounter are made up of matter particles called electrons.

A negatively charged subatomic particle known as an electron can either be free or attached to an atom (not bound). One of the three main types of particles within an atom is an electron that is bonded to it.

The other two are protons and neutrons. The nucleus of an atom is made up of electrons, protons, and neutrons together.

Thus, Option C is correct.

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