who Organized elements into four groups based on propertie

Answers

Answer 1
The answer to this is Mendeleev

Related Questions

please help timed !! due today rn!!what does thermal equilibrium mean

Answers

the condition under which two substances in physical contact with each other exchange no heat energy.

how many grams of oxygen gas are produced when this sample is heated?

Answers

Answer:  2.92%

Explanation:

Is 2.92% which I clearly believe

The capability of a substance to be stretched into thin wires without breaking is known as —
A malleability
B conductivity
C luster
D ductility

Answers

the answer is ductility

Answer:

The answer is D, ductility

Explanation:

The definition of ductile is "(of a metal) able to be drawn out into a thin wire."

Are the oldest rocks in the canyon found near the bottom

Answers

Answer: yes they are

Explanation:

because its so hot and the heat just stays at the bottom

what is the electron configuration for gallium

Answers

Answer:

[Ar] 3d^104s^24p^1

[AR] 3d10 4s2 4p1 is the configuration

6. What is one way a star with much more mass than the sun can end up?
white dwarf
red giant
neutron star
red dwarf

Answers

Red dwarf is the answer

Answer:

neutron star

Explanation:

A massive star (More massive than the star) will undergo a supernova explosion. If the remnant of the explosion is 1.4 to about 3 times as massive as our Sun, it will become a neutron star. The core of a massive star that has more than roughly 3 times the mass of our Sun after the explosion will do something quite different

Why is hydrogen peroxide sold in opaque plastic bottles?

Answers

it's not a very stable compound

How many days will pass between a new moon and a full moon?

Answers

Answer:

30

Explanation:

im smart

Answer:

The longest duration between full moon to new moon (or new moon to full moon) lasts about 15 days and 14.5 hours, while the shortest duration between full moon to new moon (or new moon to full moon) lasts only about 13 days and 22.5 hours. New Moon appears higher on summer solstice than on winter solstice.

C12H7Cl3FNaO2 what are them elements in that chemical formula

Answers

assuming you are asking for the names of the elements in that formula , the answer is

carbon
hydrogen
chlorine
fluorine
sodium
oxygen

A snicker bar has 300. Kcal, how many Joules of energy does it contain?

Answers

Answer:

1255200J

Explanation:

1 cal = 4.184 J

1kcal = 4184 J

thus, 300 kcal= 4184 × 300

= 1255200J

= 1255.2 kJ

= 1.2552 MJ

why is diamond said to be hard

Answers

Answer: Diamond is said to be the hardest element because it is unbreakable by humans. These diamonds are mined, and they are very hard. A miner knows when they have found diamond when they feel something super hard.

Hope this helps you!

Using the em figure what color is the wavelength 436 nm

Answers

Answer:

Blue

Explanation:

What type of reaction is the equation 2NaCl → 2Na +Cl2?

Answers

Answer:

Synthesis reaction

Explanation:

This is a synthesis reaction. When you combine sodium metal (Na) with chlorine gas (Cl), you form sodium chloride or kosher salt (NaCl).

Hope this explanation helps!

Snakes and similar animals are members of a group called reptiles.

How do reptiles differ from other animals?

Answers

Answer:

They have skin covered with scales.

The relative formula mass (M) of a Group 2 metal carbonate is 197
Relative atomic masses (Ar): C = 12
O = 16
Calculate the relative atomic mass (Ar) of the Group 2 metal in the metal carbonate
Name the Group 2 metal.​

Answers

The relative atomic mass (Ar) : 137 and the element : Ba

Further explanation

The naming of chemical compounds is giving a special name to a compound that aims to facilitate the classification of compounds and facilitate the identification of a compound. The rules for naming chemical compounds have been determined by the IUPAC (International Union of Pure and Applied Chemistry)

This nomenclature includes the naming of ion compounds, covalent compounds, and polyatomic

The molar mass of a compound is given by the sum of the relative atomic mass of Ar  

M AxBy = (x.Ar A + y. Ar B)  

Group 2 metals have a +2 charge : M²⁺

So the compound of metal carbonate : MCO₃

Ar C = 12, O = 16

M MCO₃ = (1.Ar M + 1. Ar C+ 3. Ar O)  

[tex]\tt 197=1. Ar~M+1.12+3.16\\\\197=Ar~M+12+48\\\\Ar~M=137[/tex]

The element with relative atomic masses 137 is Ba

So the compound : BaCO₃

In which of the following physical states are the particles in constant motion?
1. Solid
II. Liquid
III. Gas (Vapor)
I and Ill only
O I. II and III
Oil and ill only
Ill only

Answers

Answer:

cgeh

Explanation:salamat

Which particle changes to create a new element?
A.proton
B.neutron
C.electron

Answers

Answer: A

Explanation:

Explain what a cold front is.

Answers

Answer:

A cold front is a boundary or zone that separates two air masses. The cooler more dense mass replaces the warmer.

hope this helps :)

Explanation:

Answer:

A cold front is a boundary or zone that separates two air masses. The cooler more dense mass replaces the warmer.

Explanation:

i am smart.....( i think )

6. How is energy transferred to the earth?I

Answers

Answer:

Energy is transferred between the earths surface and atmosphere.Energy move place to place

I need help what is the Find the value of x

Answers

Answer:

45 degrees

Explanation:

as you can see, the box in the corner states that both the angles together are 90 degrees, and half of that is 45. 90/2=45

So, for his this value of x would be 45.

How does a cold trap catch pollutants in smog?

Answers

Answer:

A temperature inversion occurs when air near the ground is relatively cool, and there is a layer of warmer air above it. That upper layer of warm air keeps the cooler air from rising, and traps all of the pollution in the cooler, lower layer.

Explanation:

Hope this helps

Crown me as brainliest:)

Please answer correctly !!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!! And explain please !!!!!!!!!!!!

Answers

Copper(II) chloride is a blue-green solid. When placed in water, the crystals turn bright green with a slight blue tinge in the water above the crystals. When stirred, the crystals dissolve and form a light blue solution

Hope this is your answer i wasn't able to see he full question so i am not sure

Examine the layers of rock. Identify and explain which layer contains the youngest fossils.

Earth layers with fossiles in each labeled top to bottom A to D.

Answers

Answer:

Layer A is the youngest

Explanation:

It is at the top, it has all of the dinosaur bones which got buried after earth got hit with an asteroid and they went extinct. Layer D started it and all of these years dirt, soil, and fossils have been gathering making each layer before older and older.  

2) A student was working on an investigation to measure the relative activity
of an enzyme at various pH values. He collected the following data:
pH 2, enzyme activity 10; pH 8, enzyme activity 50;
pH 12, enzyme activity 10; pH 4, enzyme activity 20;
pH 6, enzyme activity 40; pH 10, enzyme activity 40

Answers

Answer:

THE LAST ONE

Explanation:

Explain why you cannot use a pump like the one at the right to
lift water up to the 3rd floor of an apartment building.

Answers

Answer:

can you aks it more clerlry

Explanation:

Nuclear energy is currently used in which three kinds of vehicles?

Answers

Answer:

A. cars, submarines, spacecraft

Explanation:

I took the test.

what best explains the cause of strong winds on a island?​

Answers

Lack of objects that could be used to slow down the winds, I.e. lack of trees or other natural barriers

PLEASE explain your answer!!!!​

Answers

Answer:

Explanation: confusing

The distinctive odor of vinegar is due to acetic acid, HC₂H₃O₂, which reacts with sodium hydroxide. If a 3.45 mL sample of vinegar needs 42.5 mL of 0.115 M NaOH to be neutralized, how many grams of acetic acid are in a 1.00 L bottle of this vinegar?​

Answers

Answer:

Explanation:

CH₃COOH + NaOH = CH₃COONa + H₂O .

42.5 mL of .115 M of NaOH will contain .0425 x .115 moles of NaOH

= 48.875 x 10⁻⁴ moles NaOH

It will react with same number of moles of acetic acid

So number of moles of acetic acid in 3.45 mL = 48.875 x 10⁻⁴

number of moles of acetic acid in 1000 mL = 48.875 x 10⁻⁴ x 10³ / 3.45 moles

= 1.4167 moles

= 1.4167 x 60 gram

= 85 grams .

So 85 grams of acetic acid will be contained in one litre of acetic acid.

what do you think would be a good science fair project for an 8th grade advanced class?​

Answers

Answer:

maybe something about planets or the solar system and they have to make them

Explanation:

Answer:

create a rainbow of flames or build an infinty mirror

Explanation:

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