Chemistry High School

answer this in your own words and I will mark brainlist ​

Answer This In Your Own Words And I Will Mark Brainlist

Answers

Answer 1

Answer:

hlo please help me to do my question

Answer 2

Answer:

hii i m here hope your day will energitic

Related Questions

Which of the following is NOT an
example of a pure substance?
A. an element on the periodic table
B. a compound made up of chemically-bonded
elements
C. a glass of salt water

Answers

Answer:

C would be the answer this question

True or False, In a neutral atom, the number of protons is equal to the number of neutrons

Answers

Answer:

False

Explanation:

In a neutral atom, the number of protons is not necessarily equal to the number of neutrons.

In such atom, the number of protons is equal to the number of electrons.

Protons are the positively charged particles in an atom. Electrons are the negatively charged particles in an atom. Neutrons do not carry any charges.

When the number of protons and electrons are the same, a neutral atom is formed.

In a molecule of fluorine, the two shared electrons give each fluorine atom how many electron(s) in the outer energy level

Answers

Answer:

8 electrons

Explanation:

As per the octet rule, the atoms possess a tendency to bond in a manner that every atom must have at least eight(8) electrons in its outermost/valence shell. It can be done either by sharing, gaining, or losing electrons from one atom to another. According to this rule, flourine would have 8 electrons in its outer shell after two shared electrons are given to it.

There should be 8 electrons in the outer energy level.

The following information should be considered:

According to the octet rule, the atoms possess a tendency to bond in a manner that each & every atom should have minimum eight(8) electrons in its outermost/valence shell. It could be done via by sharing, gaining, or losing electrons from one atom to another.

Learn more: brainly.com/question/17429689

PLEASE HELP!!! Which type of substance is gold an example of?


A. an alloy


B. a compound


C. a molecule


D. an element

Answers

Answer:

Hello!

Gold is a chemical element with symbol Au (from Latin: aurum) and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal and a group 11 element.

So in short, the Correct Answer will be (D) an Element.

Hope that Helps! Have A Wonderful Day! ☺

Explanation:

Gold is an example of chemical element with symbol Au aurum and atomic number 79, lightly reddish yellow, dense, soft, malleable, and ductile metal.

What is the difference between atomic number and atomic mass ?

Atomic number of an element  is defined as total number of protons present in the nucleus,  neutrons carry no net electrical charge, so it is the charge number of the nucleus.

atomic mass of an element can be defined as the atomic weight is measured total mass of an element’s atom, the total number of neutrons and protons in the nucleus of an atom.

Both Atomic mass and an atomic number of elements are closely related if  atomic number is high, then the atomic mass is also said to be high.

For more details regarding fire atomic number , visit

brainly.com/question/16858932

#SPJ6


3. Heating by direct contact between particles is called

Answers

I believe it is “Conduction” im not 100% sure tho, I haven’t done this since the 7th grade.

Please need help with chemistry questions!!!

Answers

Answer:

will you like work ot just the answers

Summary If you were a conservation scientist, what would you like most about your job?

Answers

Explanation:

A conservationist is someone who advocates and champions the cause to protect the environment and use earth's resource in a sustainable way.

One of the interesting perks of being a conservationist is the ability to preserve pristine nature.

This aspect would most fascinate me. The joy of having to enact laws and policies that would preserve very vital aspect of the ecosystem would such a great delight. Also, having to champion the cause of indigenous people in whose voices are not often disseminated is a good catch

1. Do you think that the lightbulb and the Moon spheres are "to scale" compared to the real
sizes of the sun and the Moon?

Answers

Answer:

Yes

Explanation: Had a question like this and I said yes and got it right

12. What is the mass number of an atom that has 4 protons, 4 electrons, and 5 neutrons?

Answers

Answer:

9

Explanation:

mass number = protons + neutrons

= 4 + 5 = 9

How far can a S-wave travel in 16 minutes?

Answers

Answer:

1500 meters per second

Explanation:

which is 15 football fields

Answer:

1 to 8 km per second.

HELP PLS I WILL GIVE 40 POINTS!!!!
Which statement is true about all physical change?

The molecular composition of the substance remains unchanged.
The changed substance keeps all the same properties.
A permanent change in the substance has taken place.
Atoms rearrange to form a new substance.

Answers

The statement that is true about physical change is that it changes it’s substance but it keeps the same properties? I think so

An element with six electrons have the same number of?

Answers

It’s going to be carbon, it has an element with six electrons.

Answer:

Protons

Explanation:

The number of electrons=the number of protons

Which of these common substances is a homogeneous mixture?
O
A. table salt
B. pure water

C. whole milk
D. maple syrup

Answers

Answer:

whole milk ,table salt , maple syrup

Answer:

d

Explanation:

Determine the mass of 21.05 moles of iron(III) sulfide.

Answers

Answer:

The mass of 21.05 moles of iron(III) sulfide is 4,372.085 grams.

Explanation:

Iron (III) sulfide is a chemical compound with the formula Fe₂S₃.

Being the molar mass of the elements:

Fe: 55.85 g/moleS: 32 g/mole

then the molar mass of iron sulfide (III) is:

Fe₂S₃= 2* 55.85 g/mole + 3* 32 g/mole=  207.7 g/mole

Molar mass is the amount of mass that a substance contains in one mole. Then the rule of three can be applied: if in 1 mole of iron (III) sulfide there are 207.7 grams, in 21.05 moles how much mass is there?

[tex]mass=\frac{21.05 moles*207.7 grams}{1 mole}[/tex]

mass= 4,372.085 grams

The mass of 21.05 moles of iron(III) sulfide is 4,372.085 grams.

How many products are produced in the following equation.

C2H2N2O4 + O2 → 4 CO2 + 2 H2O + 2 N2

Answers

Answer:

There are three products;carbon(IV)oxide,water and dinitogen and the number of molecules are given

how a cold front affects weather.

Answers

Answer:

A cold front forms when a cold air mass pushes into a warmer air mass. Cold fronts can produce dramatic changes in the weather. ... As the cold front passes, winds become gusty. There is a sudden drop in temperature, and also heavy rain, sometimes with hail, thunder, and lightning.

Answer:

Explanation:A cold front forms when a cold air mass pushes into a warmer air mass. Cold fronts can produce dramatic changes in the weather.  As the cold front passes, winds become gusty. There is a sudden drop in temperature, and also heavy rain, sometimes with hail, thunder, and lightning.

Periodic Table Puzzle Test

Answers

Answer:

dfmpfndtngognjf

Explanation:

name the compound formed when pottasim reacts with bromine

Answers

Answer:

the answer is potassium bromide

Answer:

POTASSIUM BROMIDE

Explanation:

At room temperature, potassium reacts with bromine, and by synthesis, this compound is formed. The chemical equation of this reaction is 2 K + Br2 = 2KBr. Potassium bromide has an immense contribution to medical science.

what is the mass of 2.50 mol of (C3H5)2S

Answers

Hey there!

We need to start this by finding the molar mass of (C₃H₅)₂S.

This molecule consists of 6 carbon atoms, 10 hydrogen atoms, and one sulfur atom. We need to add the molar masses of each atom up.

C: 6 x 12.01 = 72.06

H: 10 x 1.008 = 10.08

S: 1 x 32.07 = 32.07

-------------------------------

                    114.21 g/mol

Ok, now that we have established that the molar mass of (C₃H₅)₂S is 114.21 g/mol, we have 2.50 mol of (C₃H₅)₂S. If 1 mol has a mass of 114.21 g, then 2.50 mol will have a mass of 2.50 time 114.21.

2.50 x 114.21 = 285.525 grams

This should go to just three significant figures, so:

The mass of 2.50 mol of (C₃H₅)₂S is 286 grams.

Hope this helps!

Can some answer this please?


Which of these describes a chemical property of a substance?

A. Sugar's tendency to dissolve in water

B. Paper's tendency to tear

C. Gold's tendency to stay shiny

D. Wax's tendency to melt at 37 Celsius

Answers

Answer:

i think its C

Explanation:

Wax's tendency to melt can describe a chemical property of a substance. Therefore, option (D) is correct.

What is a chemical property?

A chemical property can be described as any of a material's properties that becomes evident during a chemical reaction. Any quality can be established only by changing the chemical identity of the substance. Chemical properties cannot be evaluated by viewing or touching the substance.

The internal structure of the substance must be affected greatly for its chemical properties to be investigated. When a substance undergoes a chemical reaction, its properties will change drastically, resulting in a chemical change.

Chemical properties are contrasted with physical properties and can be used for building chemical classifications. They are also useful to identify an unknown substance.

As the wax melt, it also burns and hives the carbon dioxide, water, heat, and light. Therefore, the wax's tendency to melt and burn is a chemical property.

Learn more about chemical property, here:

https://brainly.com/question/1935242

#SPJ2

what partie is found outside of the nucleus​

Answers

Answer:

Electrons

Explanation:

Answer:

electrons

Explanation:

I need help pls and thank you

Answers

it’s 1 mark k/u thanks

Are the pieces of paper natural or charged?

Answers

Their are natural since they come from trees which is natural

Answer:

natural

Explanation:

3 CACO3+2H3PO4>CA3(PO4)2+3 CO2+3 H2O

Answers

Answer:

its hto-567-st-3=56+78=103

Explanation:

so103 is yo answer

Pls help me if your good at science:)remember I need two answer choices

Answers

A & D
A has a force hitting the ball
D is changing the force when the ball hits the net

Answer:

A and D, my bad

Explanation:

Complete the sentence. When an acid is added to water, hydrogen ions __________.

A) increase
B) decrease
C) stay the same
D) disappear

Answers

Answer:

Increases

Explanation:

David heats a beaker of water for 5 min. Then he removes the beaker from the heat and allows it to cool. As the beaker cools, David measures the temperature of the water every minute for 15 min. Which equipment indicates the temperature?

Answers

Answer:

Thermometer

Explanation:

The equipment that indicates the temperature of the reaction is a thermometer.

A thermometer is a device used to measure the temperature of a body.

Most scientists use the thermometer to quantity the magnitude of the temperature of a body. There are different types of thermometer which depends on the type of temperature reading we want to collect.

Temperature is the degree of hotness or coldness of a body.

Answer:

thermometer

Explanation:

How many atoms are in 0.00100 mole of Na?

Answers

There rlly isn’t noooo number so what do you expect of course it would be zero. 0£

Answer:

6.02x10^23 atoms  i think

Explanation:

PLEASE HELP HELP I NEED THIS ASAP

Answers

Wait SORRY HELP WITH WHAT?!!
The hydrogen-ion concentration is 1000 times greater.

The net charge on a sulfide ion (S2-) is
-2. Explain how this ion obtains its
charge. Your answer
should include a discussion of
subatomic particles.

Answers

Explanation:

A sulfide ion S²⁻ is formed from sulfur atom.

An ion is an atom that has lost or gained electron.

Sulfur atom is made up of 16 electrons according to its position on the periodic table.

In essence, there are 16 negatively charged particles in an atom of sulfur.

Also, in the neutral or uncharged state, the number of electrons equals to the number of protons.

So, there are 16 electrons and protons in an atom of sulfur.

Every atom tends to be like the noble gases. Noble gases have complete octets. So, for sulfur to have a complete octet, it must gain two more electrons to be isoelectronic with Argon. Now, the number of electrons becomes 18;

 Charge  = Number of protons  - Number of electrons

 Charge  = 16  - 18  = -2

Other Questions
HELP! 10 points! The average of Amy's, Ben's, and Chris's ages is 6. Four years ago, Chris was the same age as Amy is now. In four years, Ben's age will be 3/5 of Amy's age at that time. How many years old is Chris now? What type of chemical reaction is 6, 7 and 8 In a 6-8 sentence paragraph explain how the stamp act led up to the American Revolution. Which is a chemical property of ethanol?A. boiling pointB. densityC. flammabilityD. melting point x/2 - 1 = 3 What is XPlease help me, Ill try to give brainliest!! Solve this and Ill give brainlest Comprehensive psychiatric assessment ultimately requires the integration of biological predisposition, psychodynamic factors, environmental factors, and life events. These factors, along with a mental status exam, developmental assessment, and any appropriate standardized testing is collectively referred to What is the difference between stress and strain? A-potassiumB-leadC-ironD-magnesiumE-zinc Using standard heats of formation, calculate the standard enthalpy change for the following reaction. 2NH3(g) 3N2O(g)4N2(g) 3H2O(g) ANSWER: kJ Submit Answer What is depicted in the Triumph of Death, seen above?a. a depiction of the effects of the Black Plagueb. figure overcoming the Black Plaguec. a panoramic landscape of deathd. none of the abovePlease select the best answer from the choices provided In Ancient Egypt, what do the black land and thered land have in common?Help please Pattern A starts at 20 and has the rule "subtract 2". Gatsby's real name is actually...?Question 5 options:Jace GatszenbergJay GazzyJames Gatz A virus has entered your body through the air. You are coughing, and have a runny nose, and are running fever. 1. Idenitify the stimulus and your body's response. 2. What is the main body system involved in this response? What is a solution set for 3t-5>7? National laws have been enacted to govern the actions permissible of IT professionals. Most laws governing IT professionals are geared more toward the actions of IT professionals. HIPAA is an example of a law that protects personal information, which all people, including IT professionals, are required to follow. There are no state or local laws that address information accessibility. Does government have the right to order a big company to break into smaller companies? A 36 ft tree casts a 9 ft shadow at the same time a building casts a 15 ft shadow. How tall is the building? 3. Two planes are 1620 miles apart and are traveling toward each other. One plane is traveling 120 mph faster than the other plane. The planes meet in 1.5 hours. Find the speed of each plane. PLEASE SHOW WORK I WILL MAKE BRAINLIST PLEASE !!!!!!!!!