How many totals atoms are present in the compound : Mg(OH)2

A. 3
B. 4
C. 5
D. 7

Answers

Answer 1

1 atom Mg, 2 atoms O and 2 atoms H.

1 + 2 + 2 = 5, so correct answer is C


Related Questions

formulas and nomenclature binary ionic compounds worksheet

Answers

To name the binary ionic compounds it is necessary to observe which is the metal and the non-metal that compose them.

This name is made as follows:

The name of the metal is shown.The name of the non-metal is presented in abbreviated form.Add the suffix "ide" at the end.

An example of this can be seen in the binary ionic composite KCL that receives the name Potassium Chloride, since potassium is the metal and chlorine is the non-metal.

It is important to remember that binary ion compounds are electrically charged ionic molecules formed by a metal and not a non-metal.

You can find more information about ionic bonds at the link below:

https://brainly.com/question/24500453

Reactions cannot occur without a certain minimum amount of energy. What is this minimum amount of energy called?
the activation energy
the activated complex
the kinetic energy of reactants
the potential energy of products

Answers

Hello!!
It should be
“the activation energy”

distinguizh between the 4 states ofmatter

Answers

Answer:

There are four natural states of matter: Solids, liquids, gases and plasma. ... Solids have a definite shape, as well as mass and volume, and do not conform to the shape of the container in which they are placed. Solids also have a high density, meaning that the particles are tightly packed together.

Explanation:

hope this helps! goodluck & enjoy the rest of ur day or night.

what sea animals have moveable spines that they use for protection

Answers

Answer:

sea urchins

Explanation:

Answer:

sea urchins

Explanation:

i took the test

wsphorus-SL 3. In the isotope B-11, what does the 11 represent?​

Answers

Answer:

Here boron-11 means the name of the element is boron and the mass number is 11

Explanation:

Give one use of magnesium chloride

Answers

Answer:

Magnesium Chloride is used as a precursor magnesium metals.

Explanation:

When magnesium (Mg) metal is burned in the presence of oxygen (O2), magnesium oxide (MgO) is produced. The properties of magnesium oxide are different than the individual properties of magnesium and oxygen because magnesium oxide is a compound and cannot be separated __________.

Answers

Answer:

a compound

Explanation:

What was the first person who invented a light bulb

Answers

Answer:

Thomas edison would be you're asnwer

Answer: The person who invented the light bulb was Thomas Edison

Explanation:

Part 1: Name the type of chemical reaction that occurs when magnesium chloride
solution (MgCl2) reacts with sodium carbonate solution (Na2CO3).
Part 2: Explain why aluminum (AI) would react with copper chloride (CuCl2) but not with
magnesium chloride (MgCl2).

Answers

Mg is ahead of Al in the electrochemical series and more reactive than Al hence Al does not react with MgCl2.

A chemical reaction is said to have occurred when new substances are formed. The reaction between magnesium chloride  solution and sodium carbonate solution is a double decomposition reaction since the cations exchange anion partners in the product;

MgCl2(aq) + Na2CO3(aq) ------> MgCO3(s) + 2NaCl(aq)

We must note that a single replacement reaction depends on the relative positions of metals in the electrochemical series. Al can react with CuCl2 because Al is more reactive than copper and ahead of Cu in the electrochemical series. On the other hand, Mg is ahead of Al in the electrochemical series and more reactive than Al hence Al does not react with MgCl2.

Lear more about electrochemical series: https://brainly.com/question/25749323

what element has 12 protons 12 neutrons and 11 electrons

Answers

Answer:

sodium atom

Explanation:


The periodic table of the elements is a very useful organizational tool in science. What are some organizational tools you use in your daily life? How do they make your life easier​

Answers

Answer:

There are several different types of tools you could encounter, including project management software, note-taking programs, journals, and day planners. Organization management tools help in sorting out one’s daily responsibilities and being more efficient with time: calendars, to-do lists, mind maps, document storage clouds.

Explanation:

what i know:) hope it helps

Why is acetic acid called weak acid?​

Answers

Answer:

because...it is not strong enough proton donor to be entirely converted to hydronium ions in aqueous solution...

Explanation:

lemme know whether that was helpful!

what is the 3-dimensional orientation of a sublevel known as?

Answers

The 3-dimensional orientation of a sublevel is known as atomic orbital.

In quantum mechanics, Atomic orbitals are locations around an atom's nucleus where electrons are most likely to be at any particular time(specific orbits). These specific orbits exist in levels and can be broken down into sublevels.

Each sublevel has an orbital and it is oriented differently in 3-dimensional space.

The atomic orbital is a mathematical function that depicts how one or two electrons in an atom behave as seen in waves.

Learn more about atomic orbitals here:

https://brainly.com/question/1832385

A mechanical pencil is 14 cm long. What is its length in mm?

Answers

Answer:

140mm................

what are some negative impacts on the environment and society when the water cycle is disrupted and drought occurs ?

Answers

Some of the negative impact of disruption in water cycle are adverse environment, with affected farming, hydroelectricity, and deforestation.

The water cycle has been operated in the environment for the conversion of water in the different states. The water cycle has been operated with the conversion of water from the water body to the clouds by evaporation.

The evaporated water has resulted in clouds, that have been condensed and precipitated in the form of rain. The water cycle helps in maintaining the water balance in the ecosystem. It made the water available for use as well.

The drought has been the condition of the scarcity of water. In this condition, there has been a disruption of the water cycle. Some of the negative impacts resulting from the disruption of the water cycle are:

Adverse environmental conditionsFarming affected by water scarcityUnavailability of hydroelectricityDeforestation

For more information about water cycle, refer to the link:

https://brainly.com/question/1151425

which colour would you expect ekasilicon to be

Answers

Answer:

it would ether be gray to black or silver to gray and black

Explanation:

because of my calculation ekasillicon would be that color because of the eyes and because of your color seeing .

Which of the following is the strongest covalent bond?

Single bond
Double bond
Triple bond
Hydrogen bond

Answers

Answer:

Triple bond is the strongest bond

Triple bonds are stronger than the equivalent single bonds or double bonds, with a bond order of three.

Answer:

single bond.

In a single covalent bond, when the electrons are shared between two s orbitals, the resulting bond is a sigma (σ) bond . Sigma bonds are the strongest covalent chemical bonds....!!

How does the equation F= ma tell you that it is easier to push a small chair than a large couch
across the floor?

Answers

Explanation:

[tex] \boxed{ \mathsf{F = ma}}[/tex]

The Newton's Second law of motion, also known as The Law of mass and acceleration, derives the given equation in terms of mass, acceleration and force.

It actually states that Force applied on a body is equal to the time rate of change of it's momentum.

Momentum of a body, is the product of it's mass and velocity with which its moving.

This clarifies that objects at rest have zero momentum since they have zero velocity.

If a "source" applies force on an object, it's magnitude would depend on its rate of change of momentum with time.

Since, mass of an object is a fixed entity, so change in momentum would be caused due to change in velocity.

Now, if we happen to have two objects of different mass,

(As, in here, a chair and a large couch) and we have to push them so as to produce the same change in momentum, the force applied on a couch would be more than that applied on the chair.

Answer:

This is simply because,

Force = mass × acceleration

If acceleration for both the objects is fixed, the force applied differs due to theur difference in mass.

Note here that Force I'd directly proportional to mass.

The greater the mass is, the higher is the force required to produce same acceleration.

Thus, objects with higher mass will require a greater amount of force to have the same acceleration as the object of light weight.

In the modern periodic table elements are arranged in order based on the number of:

Answers

Explanation: The elements in the modern periodic table are arranged in order of their atomic numbers, which is the number of protons in the nuclei of the atoms of an element. Each element has a unique atomic number.

what mass does a nuetron have?​

Answers

Answer:

1 AMU

Explanation:

Protons, neutrons, and electrons: Both protons and neutrons have a mass of 1 amu and are found in the nucleus.

A protozoan gains shelter as it lives in the intestine of a termites, helping the termite to be able to digest the wood that it eats. This symbiotic relationship between the termite and protozoan is known as:

Answers

Answer:

The ecological relationship between termites and the wood-digesting protozoans that live in their gut is an example of  mutualism. Thank you for posting your question here at brainly. I hope the answer will help you.

A student dissolves ethanol (C2H5OH) in distilled water. In another container, he dissolves CaCl2, in distilled water. Will either of the solutions conduct electricity? If so which one?

Plz Help!

Answers

Answer: The CaCl2 solution will conduct electricity.

Answer:

i think that the  CaCl2 solution will conduct electricity

Explanation:

im not sure but if im wrong im sorry

Please help need to turn in

Answers

Answer:

2. d

3. i

4. e

5. j

6. g

7. a

8. f

9. b

Explanation:

do a few searches when you have time to deepen understanding!

5. j
6. g
4. e
9. b
2. d
7. a
10. h
1. c
3. f

a volume of .5650 will exert

Answers

Answer: A volume of .5650 what? And what unit will be considered?

1) How many moles of hydrogen gas can be produced if 0.57 moles of hydrochloric
acid, HCl, reacts with excess solid zinc according to the following chemical
equation?
2 HCl + Zn → Hz + ZnCl2

Answers

Answer: 0.28 mol H2

Explanation:

0.57mol HCl         1mol H2          

                             2mol Hcl

Hydrochloric acid and zinc show the displacement reaction to produce hydrogen gas and zinc chloride. 0.57 moles of hydrochloric acid and excess zinc react to produce 0.28 mol H₂.

What is a displacement reaction?

A displacement reaction is the removal of one of the elements from the reactant with highly active species of the reactivity species to produce the products. It can be a single or double displacement reaction.

The balanced chemical displacement reaction is given as:

2 HCl + Zn → H₂ + ZnCl₂

Here, two hydrochloric acids react with zinc to form one mole of hydrogen gas and one mole of zinc chloride.

Given,

Hydrochloric acid = 0.57 moles

Using proportions to calculate moles as:

If 2 moles of HCl = 1 mole H₂

Then, 0.57 moles = X moles

X = 0.57 ÷ 2

= 0.28 mol H₂

Therefore, 0.57 mole HCl produces 0.28 moles of hydrogen gas.

Learn more about displacement reaction, here:

https://brainly.com/question/13219117

#SPJ2

Nivel de energia maximo de 20Ca

Answers

Por favor provide más información

Mr. Jenson's class is observing the growth of one kind of pea plant.


The class wants to design an experiment to answer the question, "What amount of water will cause the plants to produce the greatest number of peas?"

What could the class do to create the experiment?
A.
give all the pea plants the same amount of water and count the number of peas that the plants produce
B.
give all the pea plants different amounts of water and only guess the number of peas that the plants produce
C.
give all of the pea plants different amounts of water and count the number of peas that the plants produce
D.
stop watering all of the pea plants and then count the number of peas that the plants produce

Answers

Answer:

The answer would be C. Giving the pea plants a different amount of water in each one can help you observe how much water produces the most peas in a pea pod.

The answer is C to give all of the pea plants different amounts of water and count the number of peas that the plants produce

Explanation:

Answer:

C. give all of the pea plants different amounts of water and count the number of peas that the plants produce

Explanation:

The class wants to design an experiment that answers the question, "What amount of water will cause the plants to produce the greatest number of peas?"

To answer the question, the experiment should show how many peas the plants produce when they are given different amounts of water. The best way to do this would be to give all of the plants different amounts of water and count the number of peas that the plants produce.

Elements that are usually dull, brittle and do not conduct electricity are know as______.


Points: 46

Answers

Answer:

nonmetal

Explanation:

.........

...

.

What is photosynthesis?​

Answers

Explanation:

the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

Answer:

photosynthesis is the process of making food by green plants by using sunlight,carbon dioxide, water.

Mr. Green gave his students a set of items.


They had a toothpick, pencil, paper clip, safety pin, nail, and dime. He also gave them a magnet. He told them to predict which items are magnetic.

How can they test their predictions?
A.
weigh each of the items
B.
see which items stick to the pencil
C.
measure each of the items
D.
see which items stick to the magnet

Answers

Answer:

D. see which items stick to the magnet

Explanation:

To predict which items are magnetic, the students will have to test whether or not each item is attracted to the magnet. Only objects that are magnetic stick to a magnet, so all of the items that stick to the magnet should be magnetic.

Hopefully that's helpful! :)

Other Questions
Wrmelehre - German20 Words The vertical and horizontal components of the velocity of a golf ball after being struck by a club are 4.0 m s1 and 5.0 m s respectively. Determine the magnitude and direction of the velocity of the golf ball. A 6.30 m s-1 B 6.35 m s-1 C 6.40 m s-1 D 6.45 m 5-1 The next question refers to the following passage. The sentences have been numbered to help you identify them more easily.(1) As she was driving to visit her twin, Jayla had a strange feeling that something bad was going to happen.(2) Meanwhile, Kayla had the same exact premonition.(3) Worried about her sister, Kayla called Jayla's cell phone.(4) Because she took her eyes off the road to answer the phone call, Jayla lost control of her car and crashed through the front of Kayla's house.What is the function of the introductory word in sentence 2? (5 points)a. It refers to the person being addressed.b. It is a transition word.c. It provides a short answer.d. It creates a short delay.(i will mark brainiest if you have a good answer and no links plz) 3. Explain three importance of valley. A small tree was planted at a height of 8 feet. The tree has been planted for 15 months, and is now 50 feet tall. Which equation could be used to find x, the average number of feet the tree grew each month? List 4 activities that require safety equipment and explain why its important to wear safety gear for these activities. 69 points from simplord Skye listed her assets and liabilities on a personal balance sheet. Skyes balance sheet (april 2013) assets liabilities cash $1,000 credit card $4,000 investments $1,000 student loan $1,000 house $200,000 mortgage $100,000 car $8,000 car loan $5,000 total ??? total ??? net worth: ??? what is skyes net worth? $100,000 $110,000 $210,000 $320,000. PLS HELP ME I NEED THIS URGENT!!!! How can one determine the number of x-intercepts of the graph of a quadratic function without graphing the function? before exploration how were slaves treated Compare the four types of cells animal, plant, protest, bacteria, what structures do they have in common Which function is graphed below? what does cesto de papeles mean Angelina has 32 cookies. Jerry had 51 cookies. If Jerry stole 14 of Angelina's cookies but then gave her 28 cookies, how many cookies do Jerry and Angelina have left?Having a hard time! PLSSSS HELPPPPPPOPSolve each equation for the indicated variable1) G = 6x , for x2) U = 2x - 2 , for x3) Z = m - x , for x 4) G = ca , for a5) U = x - k , for x6) G = c + x , for x 7) U = k/a , for a8) g = xc , for x9) 12 am = 4 , for a10) -3 x + 2c = - 3 , for x11) am = n + p , for a12) U = ak/b , for a13) a - c = d - r , for a14) xm = np , for x Solutions which can conduct electricity must contain:atoms minerals moleculesions 90.8 is 39% of what? the ratio of cars to trucks in the parking lot is 3:5. If there are 360 vehicles in the parking lot how many are trucks A student borrows $10,000 from a bank but ends up paying $13,000 on theloan over the next five years. How much interest did the student pay?