pls help ill mark as brainliest

Q8. Na2CO3 Na2O + CO2

is this combustion, synthesis, single replacement, double replacement, or decomposition ?

Answers

Answer 1

Answer:

Decomposition

Explanation:

First, you have one compound, then they break up, or decompose, into two compounds.


Related Questions

Which describes 5 molecules of water?
1. 2 H2O
2. H2O3
3. 5 H2O

Answers

5 molecules of water is  5 H2O.

One water , H2O. molecule consist of one oxygen atom bonded with two atoms of hydrogen.  The structure of water molecule is bent. Water is a polar compound. Oxygen is more electronegative than the hydrogen atom. The oxygen atom get partial negative charge and the hydrogen atoms get partial positive charge. Water is a universal solvent.  The hydrogen and oxygen atoms are held together by a covalent bond . covalent bond is formed by the sharing of electrons between the two atoms. water The chemical name of water is Dihydrogen monoxide.

Thus, 5 molecules of water is  5 H2O.

To learn more about H2O here

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At the top of a hlgh mountaln, the welght of an object Is:
O the same as that at sea level
O less than at sea level
Ogreater than at sea level​

Answers

the last one because it’s higher

How many molecules are there of the following compound?

5NaNO3

Answers

Answer:

84.99467

Explanation:

This should be the answer.

5 molecules Na is 1 N is 1 and O3 is 3 molecules so thats a sum of 5 molecules

lol someone help me with this

Answers

Answer:

Its saying how many electronics are in your house.

Explanation:

Such as a tablet or a tv.etc

What is the main difference between gases and liquids

Answers

Answer:

1.Liquids have less force of attraction between molecules than solids and more than gases; gases have a very weak force of attraction between the molecules which is the least amongst the three states of matter. 2.Liquids have definite volume; gases do not have definite volume.

Explanation:

:) HOPE THIS HELPS

Answer:

particles

Explanation:

particles are buzzing around very quickly when in a gas, but when in a liquid they vibrate.

How many atoms in 134 moles of an element B?

Answers

Answer:

8.06966961e+25

Explanation:

Atom = Mole / 6.0221415E+23

1 Mole = 6.0221415E+23 Atom

Answer:

8.06948e+25 atoms

Explanation:

mole = number of particles/avogadro number

number of atoms = mole × avogadro number

number or atoms = (134) x (6.022× 10²³) = 8.06948e+25 atoms

Which element am I? Give my symbol ONLY! What a robber says as he's running away! ​

Answers

Answer:

ummmmmmmmmmmmmmmm..mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Explanation:

ummmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm.................... candyunicorns1999 has left the chat

Answer:

Bi

Explanation:

In Bohr’s model of the atom, where are the electrons and protons located?

Answers

The electrons move around the protons, which are in the center of the atom.

please help if you can. thank you.​

Answers

Answer:

[tex]a. BaF_{2} \\b. SnCl_{4}\\ c.Cr_{2} O_{3} \\d. FeO\\e. Li_{3} P[/tex]

Explanation:

Hey, just for a quick tip..you can use a cross to determine which ion will have how many atoms. check the image attached.

MAJOR AMOUNT OF POINTS

What is the chemical formula of wood?

Answers

Answer:

C₆H₁₀O₅

Explanation:

In chemistry, we denote any molecule with carbons, hydrogens, and other elements combined together as organic compounds. This is where get get "Organic Chemistry" from.

Wood is going to be an organic compound.

Answer:

C₆H₁₀O₅

Explanation:

Which of the following has the smallest atomic radius?

A. Astatine
B. Bromine
C. Fluorine
D. Iodine

Answers

Answer:fluorine

Explanation:

One fitness magazine suggested that the food that you eat is like a battery because it has energy. Do you think that
the banana that Mila ate had energy? Explain why you think this

Answers

Answer:

Explanation:

In this case, the fitness magazine compared the food we eat with a battery because the food provides energy for the human body to perform its daily activities.

The banana is an excellent source of energy, as it is a fruit with a high content of carbohydrates and fructose, it is an excellent food to be eaten before physical exercise, as it provides the muscles with enough energy to increase performance before and after exercise. , is a fruit rich in potassium, magnesium, phosphorus, and vitamins a and c, which gives greater strength and energy.

What causes the change within every twenty four hours from day to night on Earth?
A)
Earth's rotation on its axis
the tilt of Earth on its axis
Tarth's revolution around the sun
the distance from Larth to the Sun
Tamashenomena on the top of the sun that appear as dark spots compar
Please answer

Answers

Answer:

Earth's rotation.

Explanation:

Most of the options are obviously incorrect, with the exception of tilt. However, tilt is the cause of seasons, not days.

Answer: Earth's rotation on its axis

Explanation:

Ciara’s bike has rusted, which means that the iron in the metal changed to rust.
What has occurred?

an energy formation
an exothermic reaction
a chemical reaction
a precipitate formation

Answers

Answer:

C

Chem Reaction

Explanation:

Cuz it big brain time

The iron in the metal changed to rust, which is a chemical reaction. Therefore, option (C) is correct.

What is the rusting of iron?

The rusting of iron is an oxidation reaction in which the iron combines with oxygen in the air in the presence of water to produce Fe₂O₃.xH₂O, a hydrated iron (III) oxide.

This hydrated iron (Ill) oxide is rust and the color of rust is reddish-brown. This reddish-brown rust can be seen on iron nails, pipes, and railings. on. Rust is formed when the iron is exposed to oxygen in the presence of moisture and is not an instantaneous reaction. Rusting of iron takes place over a long period of time.

Fe (s)  +  O₂ (g)  + xH₂O (l) →   Fe₂O₃. xH₂O (s)

The oxidation state of iron increases which is followed by the loss of electrons as a result of the rusting reaction. Iron(III) oxide or ferric oxide has the iron atom has an oxidation state of +3.

Learn more about rusting of iron, here:

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1Which statement about plant cells is true? A A plant cell cannot contain both a nucleus and chlorophyll. Incorrect answer B A plant cell can contain both chlorophyll and a nucleus. Incorrect answer C A plant cell must contain chlorophyll, but can have no nucleus. Incorrect answer D A plant cell has neither a nucleus nor chlorophyll.

Answers

Answer:

B A plant cell can contain both chlorophyll and a nucleus.

Explanation:

All plants are eukaryotic organisms i.e the cells of all plants possess a membrane-bound nucleus that houses their genetic material (DNA). In addition to this, most plant cells also contain a unique organelle called CHLOROPLAST, which they use to capture the energy from sunlight in order to perform a process called PHOTOSYNTHESIS.

According to this question, plant cells can contain both chlorophyll and a nucleus. They can possess chlorophyll because chlorophyll is a pigment in their chloroplast that captures the light energy.

the product of 173.06 times 0.21 should be reported as what using proper number of sig figs?

Answers

Answer:

36.3

Explanation:

The full answer would be 36.3426, but because of the 0.21, you round it down to 3 sig figs.

List and describe six forms of energy.

Answers

Answer:

Gravitational energy, electric energy, magnetic energy, nuclear energy, thermal energy, chemical energy.

Explanation:

gravitational energy - the energy resulting from the attraction of two masses to each other

electric energy - energy from a static or moving electrical charge.

magnetic energy - energy from the attraction of opposite magnetic fields, repulsion of like fields, or from an associated electric field

nuclear energy - energy from the strong force that bonds protons and neutrons in an atomic nucleus

thermal energy - also called heat, this is energy that can be measured as temperature. It reflects the kinetic energy of atoms and molecules

chemical energy - energy contained in chemical bonds between atoms and molecule

mechanical energy - the sum of the kinetic and potential energy

radiant energy - energy from electromagnetic radiation, including visible light and x-rays (for example)

Which choice is not an example of a molecule?

Answers

You just put the question and not the answer they put for

An atom can have 2.5 protons, as long as it also has 2.5
electrons.
TRUE. Or
FALSE

Answers

I also think it’s true

A graduated cylinder is filled to 10.0 mL with water and a piece of granite is placed in the cylinder displacing the level to 23.7mL . what is the volume of the granite piece in cubic centimeters?

Answers

Answer:

13.7 cubic centimeters

Explanation:

23.7-10=13.7mL

1. A teacher instructs her students to measure out 50.0 mL of hydrogen
peroxide for three trials of an experiment. A student measures out 37.2 mL,
38.7 mL, and 36.9 mL.
Use this information to answer the questions below (1a and 1b).
3 points
1a. Calculate the percent error for each measurement and include them
below. (For example: 1%, 2%, 3%) *

Answers

Answer:

by measuring the teacher gets to 1590

Explanation:

ndnmv drf

In an ionic bond
a. electrons are shared equally
b. protons are transferred
c. electrons are shared unequally
d. electrons are transferred

Answers

Answer: a chemical bond; in which one atom donates an electron to another atom

Explanation:

PLZ HELP ME I WILL MARK BRAINLIEST. This is my THIRD time posting my question because people keep on putting random answers. If you do not know the question please do not answer it and leave it to someone else. Thank you, and my question is on the attached image below

Answers

Answer:

Are you looking for seasons on earth as it revolves around the sun? If so A is the spring equinox, C is the summer solstice, E is the autumn equinox and G is the winter solstice

Explanation:

Earth Layers: describe each layer of makeup, location, and physical properties.be sure to include which layers are compositional and watch are mechanical

Answers

Answer:

Ok so the earth layers are

Crust, the surface of the earth

Mantle, where the lava usually comes from or how volcanos form due to the tectonic plates moving

outer core

inner core is the hottest

if you are asking for the compositional and mechanical layers that would be

Crust, mantle, core, Lithosphere, Asthenoshpere, Mesosphere, out core, and inner core

Mechanical: Lithosphere, Asthenosphere, mesosphere, outer and inner core

Compostional: Crust, Mantle, and core

Which types of reactions would result in the production of gas?
PLEASE HELP NOW!! worth lots of points

Answers

Answer:

farts

Explanation:

Do you think MgO has a higher or lower
melting point than NaCl? Why?

Answers

Answer:

Magnesium Oxide (MgO) has a higher melting point than Sodium Chloride (NaCl) which is around 2,800 degrees Celcius. This is because its Mg2+ and O2- ions have a greater number of charges, and so form stronger ionic bonds, than the Na+ and Cl– ions in Sodium Chloride.

What is the mass of 1.2 mol IrI3?​

Answers

Answer:

690 g IrI₃

Explanation:

To convert from moles to grams, you have to use the molar mass of the compound. The molar mass of IrI₃ is 572.92 g/mol. You use this as the unit converter in this equation:

[tex]1.2molIrI3 * \frac{572.92g}{1mol} = 687.504 g IrI3[/tex]

Round to the lowest number of significant figures which is 2 to get 690 g IrI₃.

What is true of neutrons?
They are negatively charged and are located inside the nucleus.
They have no charge and are located outside the nucleus.
They have no charge and are located inside the nucleus.
They are negatively charged and are located outside the nucleus.

Answers

Answer:

C. They have no charge and are located inside the nucleus

Explanation:

This is correct and can I have brainliest

Answer:

your dad and i don't care if i have been warned

Explanation:

he left for some milk

How many neutrons does protium have? ​

Answers

The atomic mass of protium is about 1.00794 amu.

I NEED HELP!!! How is continental crust different from oceanic crust?


Oceanic crust is thinner and more likely to sink.


Oceanic crust is thicker and more dense.


Continental crust is more dense and lighter.


Continental crust is thicker and more likely to sink.

Answers

Answer:

A

Explanation:

Oceanic crust is thinner and more likely to sink

Answer:

The answer is A Oceanic crust is thinner and more likely to sink.

Explanation:

I hope this is right sorry if it's not.

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