How many molecules are represented in the formula 2CaCO3?

Answers

Answer 1

I believe it would be 2, if CaCO3 is your molecule you will have two because of the number in front :)


Related Questions

Help please ASAP it’s due at 12:30 pm !!

Answers

Answer:

1. Trace fossil. 2. Petrification 3. Freezing 4. Mold

Explanation:

A cell is classified as a __________________ if the genetic material is inside the nucleus.

Answers

eukaryotic cells :) sorry if this is late

People that need these answers.
1. How does sweat get to the sweat glands?
A. capillaries
B. ducts
C. arteries
D. veins
2. What hormone helps us to react to danger?
A. pituitary
B. thymus
C. adrenaline
D. thyroxin
3.
How many glands are part of the endocrine system?
A. 6
B. 8
C. 2
D. 4
4. What gland is located in the middle of the forehead and regulates the growth of bones?
thyroid gland
pituitary gland
parathyroid gland
pineal gland

Answers

Answer:

cater pillars piutyiry 6 throid gland

Answer:

1. how does sweat get to the sweat glands

Sweat gets to the sweat glands by passing through ducts

2. what hormone helps us react to danger

Adrenaline

#. how many glands are part of the endocrine system?

8

4. What gland is located in the middle of the forehead and regulates the growth of bones?

The pituitary gland.

Explanation:

Everyone has a laughing place, The trouble is most people don't take the time to look for it.
true

or

false

Answers

Answer:

True

Explanation:

Answer:

True

Explanation:

Most people stick to what they know and don't look for a laughing place.

What is the area on the earth's surface directly above where an earthquake originates?

Answers

Answer:

The epicenter

Water flows through a pipe at a rate of 620 gallons every 5 1/2 minutes expressed this rate of flow and cups per second

Answers

620 gallons = 620 x 16 = 9920 cups

5 1/2 minutes = 5 1/2 x 60 = 330 seconds

rate of flow = 9920/330 = 30.06 cups/second

The rate of flow of Water flows through a pipe will be 30 cups per second.

What is the rate of flow?

The distance covered by the particle or the body in an hour is called the rate of flow. It is a scalar quantity. It is the ratio of gallons to time.

We know that the speed formula

Rate of flow = Gallons/Time

Water flows through a pipe at a rate of 620 gallons every 5 1/2 minutes expressed at this rate of flow and cups per second.

We know that in one gallon, there are 16 cups.

5.5 minutes = 330 seconds

The rate of flow will be

Rate of flow = (620 x 16) / 330

Rate of flow = 30 cups per second

The rate of flow of Water flows through a pipe will be 30 cups per second.

More about the rate of flow link is given below.

https://brainly.com/question/27880305

#SPJ2

се во
1. An atom has 19 protons and 20 neutrons. How many electrons are there?

Answers

Answer:

there is 19 electrons

Explanation:

The number of electrons is equal to the number of protons, hope this helps!


A
occurs when what the scientist expects changes how the results of an experiment are viewed?
A. conundrum
B. bias
C. impass

Answers

Answer:

conundrum

Explanation:

its not bias or impass

what are some natural resources that are limited on earth

Answers

Answer:

oil, ores, and fossils.

please help ASAPPP
will mark brainliest!!!

Answers

Greetings!______________________________________Answer:[tex]OH^{-1}[/tex]WHY IS OPTION A NOT POLYATOMIC?

The polyatomic ions are those ions which has more than two atoms involved such as the other options than OH^-1 in the question. The OH^-1 ion is the diatomic ion because it has only 2 atoms

______________________________________HOPE IT HELPS!

How do the products of chemical reactions compare to their reactants? Question 5 options: The products usually weigh more than the reactants. The products often have completely different properties than the reactants. The products usually have more atoms than the reactants. The products are usually more toxic than the reactants.

Answers

Answer:

The products often have completely different properties than the reactants.

Explanation:

In a chemical reaction, the products are often completely different from the reactants.

When chemical reactions takes place, the species rearranges to form new bonds and to attain stability.

Therefore, the new products formed usually have completely different properties when compared to the reactants.

Also, in chemical reactions, mass is always conserved. The mass of the products and reactants are usually the same.

Fill in the blanks: ______ compounds break up into ______ and ______ in solution, which can move freely and carry an _______ current.

Answers

I hate virtual school

I need help, lots of points to you, please give genuine answers, will mark brainliest.​

Answers

Answer:

this is hard

Explanation:

10. When a substance is analyzed using an electron microscope, it is found
to contain only one type of atom.
This substance is
A an element
B. a mixture
C. neither of the other three
D. a compound

Answers

A an element gn BBC dfhjhhgdsdgghh

Plz help. Write the chemical name of the following compounds.

Answers

8.Carbonate tetranitride
9.Zinc chloride
10.Sodium cyanide
11.Magnesium Phosphate

Which type of bond is salt? a. covalent b. valence c. metallic d. ionic

Answers

Answer:

D. Ionic

Explanation:

It has ionic bonding! Good luck ^^

Select all the correct answers.
Based on the enthalpy changes given for the reactions, which reactions are endothermic?

Answers

Answer:

The reaction for which ΔH is positive are endothermic reactions. Explanation: The energy changes occur during the bonds formation and bonds breaking

A transformer has 150 turns in its primary coil and 50 turns in its secondary coil. If the input voltage is 12 V, what is the output voltage?​

Answers

Answer:

36V

Explanation:

Given parameters:

Number of turns in primary coil  = 150turns

Secondary coil turn = 50turns.

Input voltage  = 12V

Unknown:

Output voltage  = ?

Solution:

For this transformer problem, we use the expression;

   

   [tex]\frac{N_{s} }{N_{p} }[/tex]   = [tex]\frac{V_{s} }{V_{p} }[/tex]  

Insert the parameters and solve;

        Ns is the number of secondary turns

        Np is the number of primary turns

         Vs is the secondary voltage

          Vp is the secondary voltage

Insert the parameters and solve;

          [tex]\frac{150}{50}[/tex]   = Output voltage / 12

          Output voltage = 12 x 3  = 36V

The element is
sulfur
. This can be determined by looking at the number of
protons
. The element has a valence shell of
16
and
6
valence electrons.

Answers

Answer:

This can be determined by looking at the number of protons.

Explanation:

The atomic number which is the number of protons is the best indicator of what an element is.

Based on the number of protons in an atom, elements are arranged in a definite grouping on the periodic table.

This because, atoms do not readily give off their protons so, it is a good measure of the type of atom one might be dealing with.

What effect does the spinning of the earth's core have?
A.it creates gravity
B. it creates matter
C. it creates mass
D. it creates the earths magnetic field.

Answers

Answer:

c

Explanation:

its c

Earth contains a spinning electric filed. The spinning of earth core creates its magnetic field. Thus, option D is correct.

What is a spinning body?

A body which rotates in its own axis is called a spinning body. Earth rotates about its along with revolving around sun.  The outer core of earth generates electric current. This is called telluric current.

Flow of this current creates an electric current which is parallels to the surface of earth. The direction of magnetic field lines will be perpendicular to the direction of current. But it comes stronger when parallel to current.

A rotating electric current results in the generation of a magnetic field. Thus spinning of  earth core generates a magnetic field and therefore, option D is correct.

To learn more about magnetic field, refer the link below:

https://brainly.com/question/11514007

#SPJ2

Plsss helpppp
im confused
will mark BRAINLIEST

Answers

i am thinking Li & CI :)

Answer:

I searched the answer up on Brainly so its not my credit.

Explanation:

The answers D.

"If you have learned that metal + nonmetal ⟶ ionic bond, the answer is D, because N and C are the only pair of nonmetals.

However, if you have learned that a bond is ionic if the electronegativity difference (ΔEN) between the two atoms is greater than 0.7, the answer is A, B, and D.

The Li-Cl bond is definitely ionic.

For Na and C, ΔEN =1.62, so the Na-C bond is a highly polar covalent bond.

For Mg and C, ΔEN = 1.24, so the Mg-C bond is a polar covalent."

Hope this helps :D

I will mark brainliest!
Which particle has a high rate of deposition?
A. a low-density particle
B. a small particle falling off a cliff
C. a particle with jagged, rough ends
D. a large round particle settling on a surface

Answers

Answer:

C ! :)

Explanation:

Answer:

The correct answer is A

Explanation:

LOW-DENSITY PARRTICLE

which of the following substances has a molar mass of 208 grams?
A. P2O5
B. BaCl2
C. AlCl3
D. MgCl2

Answers

Answer:

answer - a

Explanation:

please like and follow me

Answer:

The answer is A

Explanation:

I'm not 100% sure but, its probably A.

Is the average atomic mass of a sample containing three lithium-6 and two lithium-7 closer to the mass of Li-6 or Li-7 ?

Answers

The average atomic mass of a sample closer to the mass of Li-6

Further explanation  

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.  

So Isotopes are elements that have the same Atomic Number (Proton)  

Atomic mass is the average atomic mass of all its isotopes  

In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu  

Mass atom X = mass isotope 1 . % + mass isotope 2.%  

three Li-6, mass number = 6

two Li-7, mass number = 7

total abundance = 5

abundance for Li-6 =

[tex]\tt \dfrac{3}{5}\times 100\5=60\%[/tex]

abundance for Li-7 =

[tex]\tt \dfrac{2}{5}\times 100\5=40\%[/tex]

Average atomic mass :

[tex]\tt (0.6\times 6)+(0.4\times 7)=6.4[/tex]

24H2S + 16HNO3 3Sg+ 16NO + 32H2O

Answers

Answer:

24 sultur with 48hydrogen+16 hydrogen,nitrogen and 48 oxygen+16 nitrogen,16 oxygen+62hydrogen and 32 oxygen

Explanation:

Forces of attraction between particles increase as the particles move faster and
farther apart.
True
False

Answers

Answer:

false

Explanation:

as the particles move further apart their forces of attraction become qeak

False i just have a feeling lol

7th grade help me plzzzzzzz

Answers

Answer:

15 atoms

increases

Explanation:

10 hydrogen atoms + 5 oxygen atoms = 15 atoms

Predict what would happen if a positive charge is placed between the two charges and allowed to move. Explain.

Answers

Answer: The same effect happens when you put two electrons near each other (or two protons). We know that if you have a single positively charged particle, a positively .

Explanation: i hope that helped. have a good day.

How many elements are in C8H3NaBr12?

Answers

Answer:

I don’t get it you have to go more into detail lol then I’ll answer

Explanation:

Convert 62.5 L to mm
3

Answers

Answer:

0.0625

Explanation:

Answer:

62,500

Explanation:

Other Questions
The product(s) of photosynthesis is/are:O carbon dioxideO carbon dioxide and glucoseO waterO glucose and oxygen Tell whether the angles are complementary or supplementary. Then find the value of x. What is the value of x in the equation 2.5 x + 10 = x minus 0.5?7337 = 3 7 = 3 + 1 using to data in this chart, write an essay comparing the number of each business type to their sales and profitability? can someone help please Which of the following is the term for the supportive linings at the openings in garments?DartsTrimGussetsFacings 11. List the eight parts of speech and give an example of each. (4 points)Select the link to access the Short Answer Rubric. In the section Pencil Test" from "Cool Eye Tricks," which text structure best describes the overall organization? A circus performer walked up and to the right for a total displacement of 10\,\text m10m10, start text, m, end text along a diagonal tightrope angled 30 \degree3030, degree above the ground. How old is the earth? PLEASE HELP ME WITH THIS QUESTION BANANAFANART ILL GIVE U BRAINLIEST BANANAFANART PLEASE ANSWER IT :( How did O'neal help the miami heat in 2006 The closest the United States and the Soviet Union came to nuclear war wasKorean WarCuban Missile CrisisFall of ChinaConfrontation in Berlin Find the slope of the line y=1/6x+3/2 A student collects a sample of water from a pond near her home. Sheexamines a drop of the water under a microscope and sees four verydifferently shaped single-celled organisms. Which of the followingcan she reasonably conclude as the reason the organisms look sodifferent? En cierto cultivo, inicialmente haba 1000 amebas que se reproducen por biparticion cada da Cuntas amebas habr al cabo de 30 das despus que se inici el cultivo ? ILL GIVE BRAINLY THING Which XXX and YYY correctly output the smallest values? Vector user Vals contains integers (which may be positive or negative). Choices are in the form XXX/YYY. // Determine smallest (min) value int minval; XXX for (i = 0; i < uservals.size(); ++i) { if (YYY) { minval - userVals.at(i); cout 12. What effect did European migration & settlement have on the Native Americas? * What is one major theme of the Ramayana?A. the loss of childhood innocence B. The dangers of married lifeC. The search for immortalityD. The Triumph of good over evil