Chemistry High School

PLEASE HELP
Which is a true of a molecule?
Quesion 3
PLEASE HELP

PLEASE HELPWhich Is A True Of A Molecule?Quesion 3 PLEASE HELP

Answers

Answer 1
The last one. A bond of two or more of the same element.

Related Questions

Someone pls help me I will make you brain

Answers

Answer:

D cooler temperatures

Explanation:

Make me b r a i n please

Cho hai điện tích q1 = 2.10-6 C, q2 = 4. 10-6C, đặt tại A và B trong không khí biết AB = 2 cm. Xác định vectơ cường độ điện trường tại:
a) H, là trung điểm của AB.
b) . M, MA = 1 cm, MB = 3 cm.
c) N, biết rằng NAB là một tam giác đều.

Answers

Answer:

A

Explanation:

sorry try lang baka mali

50 POINTS!!!!!!
Reactions that occur spontaneously must reach an energy threshold before they can proceed. The graph shows the amount of energy needed for a reaction to occur. Explain how enzymes are involved in this reaction and can affect the rate of this reaction.

Answers

Remember that enzymes always accelerate chemical equations, depending on what the enzyme is consisted of. As the enzymes are burned the reaction or amount of chemical reactions decreases.

An electromagnet is created by
A. putting a piece of soft iron in an outlet.
B. brushing a piece of steel with a soft cloth.
C. running electric current through a coiled, conductive wire.
D. rubbing two pieces of metal together quickly.

Answers

A. putting a piece of soft iron in an outlet

chemical equation why calcium oxide is a basic

Answers

In reaction with the acid, the metal oxides form salt and the water. ... When the metal oxides are reacting with the water, they form strong bases. The calcium oxides when reacting with the water form a strong base. Therefore, Calcium oxide is a base.

Which of these element is NOT an alkali metal? Na Rb H cs​

Answers

Answer: Hydrogen-H

Explanation: Hydrogen is a gas, the most abundant element in the universe and the simplest of them all

Your teacher has just asked you to measure out 1.24 x 1023 molecules of sodium chloride, Sodium chloride has a chemical formula of Naci. Using a Periodic Table,
determine how many grams of sodium chloride you should measure out.
A 12.08
2.12 x 1028
284 g
D 72.5 x 1021 g

Answers

Answer:

A)

Explanation:

A bc do it in a calculator and that’s what
you’d get

Who discovered the proton?
Crookes
Rutherford
Balten
Chadwick

Answers

Answer:

Sir James Chadwick discovered proton  

Explanation:

Sir James Chadwick,  was a British physicist who was awarded the 1935 Nobel Prize in Physics for his discovery of the neutron in 1932. In 1941, he wrote the final draft of the MAUD Report, which inspired the U.S. government to begin serious atomic bomb research efforts.

what is the only process that removes carbon from the atmosphere

Answers

Answer:

Photosynthesis process

Explanation:

Photosynthesis removes carbon dioxide naturally — and trees are especially good at storing carbon removed from the atmosphere by photosynthesis.

during June , earth is 152,000,000km from the sun. how far is earth from the sun in miles​

Answers

Answer:

94448421.2201

Explanation:

multiply the value in kilometers by the conversion factor '0.62137119223684'.

So, 152000 kilometers = 152000 × 0.62137119223684 = 94448.42122 miles.

94448421.2 miles away from earth!

which substance cannot be decomposed by a chemical change

Answers

Answer:

Nonbiodegradable substance

Elements or chemical elements I think

How many protons and neutrons are in the third isotope?

Answers

Answer:

6 protons and 7 neutron

Explanation:

Carbon has a third isotopes named carbon-13

All carbon isotopes have 6 protons .

This is called atomic number. To make it up to 13 in carbon -13 you will need 7 neutrons and 6protons .

What is an electrolytic cell?
A. A cell with a negative cell voltage
OB. A cell with a spontaneous redox reaction
C. A cell with a positive cell voltage
D. A cell that has a salt-bridge connection

Answers

Answer:

A. A cell with a negative cell voltage

Explanation:

other answer is wrong

An electrolytic cell is a cell with a spontaneous redox reaction (option B).

What is an electrolytic cell?

Electrolytic cell is an electrochemical cell that utilizes an external source of electrical energy to force a chemical reaction that would otherwise not occur.

An electrolytic cell converts electrical energy into chemical energy. The redox reaction in the cell occurs spontaneously and is responsible for the production of electrical energy.

Therefore, according to this question, option B is correct.

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Someone pls help me I will make you brain

Answers

Answer:

D, radiation

Explanation:

the sun's heat radiates onto the land, oceans, and surrounding atmosphere, warming them

what is chemical formula of water, carbon dioxide, oxygen and hydrogen​

Answers

Answer:

water= H20 , carbondioxide= co2 , oxygen=o2 , hydrogen=h2

Explanation:

Answer:

water: H2O,

carbon dioxide: CO2

oxygen:O₂

hydrogen: H2

Explanation:

An atom of oxygen (atomic number 8) has a mass number of 17. How many neutrons are
in that atom?

Answers

Answer:  # of neutrons = 9

Explanation:

# of neutrons = mass number - atomic number

                      = 17 - 8

                      = 9

∴ number of neutrons in an atom of oxygen of mass number 17, is 9.

Is college worth it

Answers

Answer:

in my opinion not really

Explanation:

the ion with 36 electrons, 34 protons, and 44 neutrons

Answers

While the number nuclear protons as given is 34, and therefore we deal with the element selenium, there are 2 more electrons than protons, and therefore this species has an overall
2
−
charge.
We represent this selenide ion as
S
e
2
−
. Do I win 5 pounds?

Z= 34, therefore the atom is selenium

identify two ways in which carbon-12 carbon-13 and carbon-14 are alike

Answers

Answer:

identify two ways in which carbon-12, carbon-13, and carbon-14 are alike. they each have 6 protons and neutrons and they're all carbon atoms. what is a chemical compound?

Name any two metals that are found in liquid state at NTP.​

Answers

Answer:

mercury and gallium are two metals that are found in liquid state at NTP.

Is CH4 a molecule, compound, or both?

Answers

Compound, because is made from more than one element


This will always help you= A molecule is formed when two or more atoms join together chemically. And a compound is a molecule that contains at least two different elements.

na+F2-> naF a chemical reaction. the synthesis of sodium fluoride noF is shown above all chemical reactions involve a change to an atoms number of protons neutrons electrons

Answers

Answer:  Electrons

Explanation:

A chemical reaction usually only affects elctrons. A chemical reaction usually results in the electrons being transferred or shared. When sodium and fluorine react to produce sodium fluoride, a sodium electron is transferred to the fluorine to produce ionic bonds. This ionic bond exists between the sodium cation and fluoride (fluorine) anion.

The PE of a magnet in the presence of another magnet is related to -

Answers

How close the magnets are together and which direction the poles are pointed to

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Drag the tiles to the correct boxes to complete the pairs.
Which types of matter are these substances?
Tiles
element
compound
homogeneous mixture
heterogeneous mixture
Pairs
a cloud, which consist of small water droplets
distributed throughout the air
helium, a gas composed of identical atoms
rubbing alcohol, a liquid composed of chemically bonded
carbon, oxygen, and hydrogen atoms
sugar thoroughly dissolved in water
Submit

Answers

Answer:

1.heterogeneous mixture

2.element

3.compound

4.homogeneous mixture

Explanation:

The correct pairs are:

A cloud, which consist of small water droplets - Heterogeneous mixture

Distributed throughout the air

helium, a gas composed of identical atoms - Element

Rubbing alcohol, a liquid composed of chemically bonded - Compound

Carbon, Oxygen, and Hydrogen atoms

sugar thoroughly dissolved in water - Homogenous mixture.

In Heterogenous mixture, the composition of the mixture is not uniform. In Homogenous mixture, the composition is uniform throughout. Element is the combination of same atoms. Compound contains two or more elements.

Therefore, the correct pairs are,

A cloud, which consist of small water droplets - Heterogeneous mixture

Distributed throughout the air

helium, a gas composed of identical atoms - Element

Rubbing alcohol, a liquid composed of chemically bonded - Compound

Carbon, Oxygen, and Hydrogen atoms

sugar thoroughly dissolved in water - Homogenous mixture.

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Give the correct order of apparatus (Crucible, Filter funnel, Test tube, Dropper, Spatula) to show the correct arrangement that can be used to prepare and investigate the nature of pH of a sample of onion solution.

Answers

Answer:

Is it Crucible,Test tube,Dropper,Filter funnel, Spatula

Explanation:

The laboratory apparatus is used to experiment with the chemicals and to hold them. To prepare and investigate the pH of the onion sample apparatus required are the crucible, test tube, dropper, filter funnel, and spatula.

What is pH?

pH is the measurement of the hydrogen or the hydroxide ion concentration in the solution to determine the alkaline or acidic nature of the substance.

The pH of the onion solution can be determined by experimenting with the help of the laboratory apparatus and reagents. A crucible is a container that can withstand high temperatures.

A test tube is a glassware used to hold the substance or chemical in it. Similarly, a dropper is used to draw liquids. The filter funnel separates the filtrate or the solution. A spatula can  be used to remove or add the substance.

Therefore, the correct order of the apparatus is the crucible, test tube, dropper, filter funnel, and spatula.

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Iron (II) chloride
Covalent or ionic

Answers

Answer:

ionic

Explanation:

Iron(II) chloride, also known as ferrous chloride, is the chemical compound of formula FeCl2. It is a paramagnetic solid with a high melting point. The compound is white, but typical samples are often off-white

2+2++++++++++++++++++++++++++++++++++++++++++++++3

Answers

Answer:

2 + 2 + 3 = 7

Explanation:

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A mixture that you eat with at least 6 compounds in it

Answers

Answer:

Coloured candies?

Explanation:

A block of aluminum weighs 50.0g it's density is 2.70 g/cm3 what is the volume of a block

Answers

Answer:

18.51g/cm³

Explanation:

Mass=50.0g

Density =2.7g/cm³

Volume =Mass/Density

Volume =50/2.7

Volume =18.51g/cm³

can someone help me plz

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Answer:

what do you need help with?

Explanation:

Answer:

Hello brainly user! You did not provide a question for us to help you with! In order for someone to help you, you need to provide the question you are in need of help for. What's your question?

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