Un estudiante de noveno año decide realizar varias mezclas de compuestos quimicos y tiene un frasco rotulado con la formula quimica: MgO ¿cual es el nombre del compuesto?

Answers

Answer 1

Answer:

- Oxido de magnesio

Explanation:

Mg → magnesio

O → oxígeno

La unión del oxígeno (no metal) con un metal, forma el determinado óxido que se nombra como óxido de .... y el no metal.

En este caso, podemos deducir que el contenido del frasco es de óxido de magnesio, aunque viendo que hay un sólo átomo de oxígeno podemos llamarlo como monóxido de magnesio, similar al CO (monóxido de carbono).

A partir de que el magnesio sólido entre en contacto con el aire, se produce MgO de acuerdo a la siguiente reacción:

2Mg  +  O₂ →  2MgO


Related Questions

1. At what temperature dose water freeze
2. at what temperature dose ice melt
3. At what temperature dose water boil​

Answers

Answer:

1. water will freeze at a temperature below 32 degrees fahrenheit 0 degree celsius.

2. Ice will melt at a temperature above 32 degrees fahrenheit 0 degrees celsius.

3. water boils at 212 degrees fahrenheit or 100 degrees celsius.

Match the term with the example that shows its definition [please].

Compressibility
Flammability
Heat of combustion
Toxicity

A) The burning of coal releases heat
B) Gasoline catches fire
C) Gas is squeezed into a small container
D) High lead levels in a lake kill fish

Answers

A) Heat of combustion
B) Flammability
C) Compressibility
D) Toxicity

Which electron notation is incorrect?
1s 2s 2p 3s 3p 10
1s 2s 2p 3s 3p3
1s2 282 2p 3s 3p6

Answers

The first one is wrong
The first one my guy is wrong

PLEASE HELPPP :[
When a chemical change occurs a new substance is created. Harvey put hamburgers on his barbecue, and they cooked. He left fruit out on the counter and they started to rot.

What evidence about chemical changes can Harvey use to support the examples in his experiment?

A.The chemical changes occurred because the chemicals changed.
B. The chemical changes occurred because there was a change in light energy.
C. The fruit and the hamburgers were affected by an increase in heat energy.
D. The fruit and the hamburgers were affected by a decrease in heat energy.

Answers

Answer:

C. The fruit and the hamburgers were affected by an increase in heat energy.

Explanation:

One claim Harvey can use to support the examples from his experiment is that the hamburgers and fruits were affected by an increase in the heat energy.

This chemical change is one that is solely driven. This action Harvey is carrying out is cookingWhen meals are cooked, the raw substances undergoes chemical change via the action of heat.

Answer:

btw it's not c

Explanation:

a fruit rotting or infected is a chemical reaction therefore,its close to d

Urgent help plzzzzzz?!!!!!!!!!!!

Answers

Answer:

Explanation:

For 4 all you have to do is take the -log(H3O+) and then use your PH values to identify if it's acidic or basic

a. 2.06 - acidic

b. 8.4 - basic

c. 6.67 - acidic

d. 5.85 - acidic

Please help :(
I just need the bottom true or false part

Answers

Answer:

if you mean question 21

true

Explanation:

sorry if wrong

You observe 2 waves named alpha and beta. The alpha wave has a frequency of 5 Hz and the beta wave has a frequency of 2 Hz. Based on these observations which wave has a shorter wavelength? Group of answer choices

Answers

Answer:

shorter wavelength = alpha wave

Explanation:

Given that,

The alpha wave has a frequency of 5 Hz and the beta wave has a frequency of 2 Hz.

We need to compare the wavelengths of these two waves.

For alpha wave,

[tex]\lambda_1=\dfrac{c}{f_1}\\\\\lambda_1=\dfrac{3\times 10^8}{5}\\\\=6\times 10^7\ m[/tex]

For beta wave,

[tex]\lambda_2=\dfrac{c}{f_2}\\\\\lambda_2=\dfrac{3\times 10^8}{2}\\\\=15\times 10^7\ m[/tex]

From the above calculations, we find that the wavelength of the alpha wave is shorter than the wavelength of the beta wave.

oxygen - 17
Atomic #
Atomic mass
# of protons
# of neutrons
# of electrons

Answers

Answer:

atomic #8

atomic mass 15.999U

# protons 8

# neutrons 8

# protons 8


Which term means finding ways to describe and explain the natural world
through observations and experiments?
A. Pseudoscience
B. Philosophy
C. Chemistry
D. Science

Answers

Answer:

D. Science i think

Explanation:

PLEASE HELP! THIS A TIMED QUIZ!!
Scientists found an artifact that has 25% of Carbon-14 left. Based on how much Carbon-14 is remaining, how old is the artifact that was found?

A). 17,100 years
B). 5,700 years
C). 22,800 years
D). 11,400 years

Answers

Answer: D

Explanation:

The answer to your question is D

If the pressure on the surface of water in the liquid state is
40 kpa, the water will boil at?

Answers

Answer:

sdfs

Explanation:

dfsdfsdfs

Devin had a bucket of shredded metals the metals consist of aluminum steel and copper he tried sorting the mixture by running it through a filter but this did not sort the mixture into separate components what can devin conclude

Answers

Answer:

Devin's problem can be solved by exploiting the activity series of metals.

Explanation:

This determines what metals are more reactive and would be readily displaced in a reaction.

Seeing as they are both metals scraps of similar sizes, filtration isn't a solution.  But since Copper is lower on the activity series than Aluminium, adding an acidic solution (say tetraoxosulphate VI solution) to the mixture, would have aluminium in solution and Cu as residue which can then be filtered off.

I hope this was helpful.

HELP 20 points!
In a manufacturing process why would you prefer not to have a limiting reactant?

Answers

Answer:

The limiting reagent is the reactant that is completely used up in a reaction, and thus determines when the reaction stops. ... The limiting reagent is the one that is totally consumed; it limits the reaction from continuing because there is none left to react with the in-excess reactant.

Explanation:

The limiting reagent is the reactant that is completely used up in a reaction, and thus determines when the reaction stops. ... The limiting reagent is the one that is totally consumed; it limits the reaction from continuing because there is none left to react with the in-excess reactant.

What is the name AND mass number of an atom with 4 protons and 4 neutrons?

Answers

Be beryllium mass number: 9.012g
*4 protons is the atomic number btw just check your periodic table

What is the ionic charge of elements in column 1?

Answers

Answer:

こんにちは

Explanation:

the ionic charge of the elements in column 1 is +1

PLS HELP
True or False: Water molecules, as a liquid, are very spread apart because of their attractions for one another. *

Answers

Answer:

False

Explanation:

Water molecules are spread up but slightly, enough that none of the molecules actually move freely around each other. Only gas and plasma molecules are very spread apart.

When energy is changed from one form to another, _____.

all of the energy is changed to a useful form

a physical change occurs

all of the energy can be accounted for

some of the energy is lost entirely

Answers

Answer:

some of the energy is lost entirely

Explanation:

A 5.0-mL sample of CO2 gas is enclosed in a gas-tight
syringe (Figure 11.3) at 22 °C. If the syringe is
immersed in an ice bath (0 °C), what is the new gas
volume, assuming that the pressure is held constant?

Answers

Answer:

3.5ML

Explanation:

At the constant pressure, the final volume of the carbon dioxide gas was equal to 4.62 ml at a temperature of 0ºC.

What is Charles's law for volume-temperature relation?

Charles's law can be explained as when the pressure of the gas is kept constant, the volume of gas is directly proportional to the temperature of a gas.

The volume of the gas and the temperature of the gas have a direct relationship according to this law.

Therefore, V∝ T

or    V₁/T₁ = V₂/T₂                                               ....................(1)

Given, the initial temperature of the CO₂ gas, T₁ = 22 ºC

T₁ = 22 + 273 = 295 K

The final temperature of the CO₂ gas, T₂ = 0ºC

T₂ = 0 + 273 = 273 K

The initial volume of the gas, V₁ = 5 ml

Substitute the value of V₁, T₁, and T₂ in equation (1 ) to get final volume of CO₂ gas:

5/295 = V₂/273

V₂ = 4.6 ml

Therefore, the final volume of the gas is equal to 4.6 ml at 0 ºC, when there is no change in the pressure.

Learn more about Charles's law, here:

brainly.com/question/16927784

#SPJ2

A student observes that a popcorn kernel has a hard coat. He places the kernel in a moist paper towel and observes it for several days. He notices that the coat splits and a small root emerges. He concludes that

Answers

Answer: Water inside the seed coat creating a pushing force, breaking the seed coat.

Explanation:

Seed germination can be defined as the process by which a new plant emerge out from a seed. The radicle is the first emerging part from a seed and it develops into a root and the plumule is the second emerging part and it develops into a shoot. The light, water, adequate temperature, and soil are the factors that are necessary for seed germination.

According to a given situation, the popcorn kernel will receive the moisture necessary for the germination process, the water will imbibe into the seed coat creating pressure inside the seed and which will cause the seed coat to break and the new plant parts or seedling will emerge out of the seed coat.

Name 3 sources of carbohydrates for the production of an alcoholic drink

Answers

Answer:An alcoholic drink is a drink that contains ethanol, a type of alcohol produced by fermentation of grains, fruits, or other sources of sugar. The consumption of alcohol plays an important social role in many cultures. Most countries have laws regulating the production, sale, and consumption of alcoholic beverages.

Explanation: vodka the preferred alcoholic beverage of choice among alcoholics? #3 Doesn't make you feel bloated or full like beer does. It goes down quickly and smooth. #4 Gets you drunk just as fast as any other hard liquor can, and obviously much faster than beer or wine.

John is performing an experiment in which a solution alternates between a clear color and a bluish-purple color at a regular time interval. He observes that the time interval between color changes is 30 seconds (s). Sally replicates the experiment with the same solution, but at a temperature that is 10 degrees Celsius (°C) higher. What is the most likely time interval between color changes at this higher temperature? *

Answers

Answer:

15 sec

Explanation:

The independent variable and dependent and constant

Answers

Answer:

Explanation:

independent-longer wire

dependent-bulbs being brighter

constants-lamp brand and so on

2. Mrs. Matthews went to Edisto beach with her husband and two children. She forgot the
sunscreen and the UV Index was extremely high at a level 10. Her whole family got very sunburnt.
Which energy transfer caused the sunburn?
(20 Points)
Radiation
Conduction
O Convection
Kinetic Energy

Answers

Answer:

A; radiation

Explanation:

also, please dont use brainly to copy and paste every answer to get them right, use it when u need help

For each element in the table below, use the Gizmo to find the number of valence electrons and the list the
valence based on the Lewis diagram. Then find the sum of these numbers.


IF SOMEONE COULD JUST HELP ME OR EXPLAIN HOW TO DO IT PLEASE! THANK YOU

Answers

Answer:

It's funny cause i'm doing the same exact thing as you.

Explanation:

You need to go to the Gizmo, and it explains everything. But When you're looking at "Valence Electrons" thats how many "dots" (electrons) there are on the outermost circle, so Fluorine has 7 Valence Electrons.   To find the valency, you need to first identify the Valence Electrons. Fluorine has 7 valence electrons, and it would be a lot easier for this atom to gain an electron, rather than lose 7. So 8-7 is 1, meaning the Valency of Fluorine will be 1. For the sum, just add the total number, so 7+1 is 8, so the sum of Fluorine will be 8. This is confusing, so I'm sorry if this doesn't make sense.

Answer:

Explanation:

not sure if this is totally correct but checked with classmates and this seems to be around what most got

What is the mass, in grams, of 7.5 x 1015 molecules of ammonia, NH3?

Answers

Answer:

7.6125

Explanation:

multiply 7.5 with 1015

yll got 76125 divide it by 1000 to get answer in grams

The mass in grams of 7.5 × 10¹⁵ molecules of ammonia is 21.08 × 10⁻⁸ g.

How do we calculate mass from moles?

Mass of any substance from moles will be calculatd as:

n = W/M , where

W = required mass

M = molar mass

We know that in 1 mole of any substance 6.022 × 10²³ particles of that sybstance are present.

No. of moles in 7.5 × 10¹⁵ = 7.5 × 10¹⁵molecules / 6.022 × 10²³ molecules per mole

No. of moles in 7.5 × 10¹⁵ = 1.24 × 10⁻⁸ moles

Molar mass of ammonia = 17 g/mol

Now we put the requred values on the first equation to get the mass as:

W = (1.24 × 10⁻⁸mol)(17 g/mol)

W = 21.08 × 10⁻⁸ g

Hence required mass of ammonia is 21.08 × 10⁻⁸ g.

To know more about moles, visit the below link:

https://brainly.com/question/24639749

The speed in which the moon orbits the earth is 500 mph.

a. True
b. False

Answers

Answer: False

Explanation: The moon travels at 1.42 mph around the Earth.

Answer:

false

Explanation:

Igneous rocks are classified by mineral composition and ?

1. How fast it weathers .
2. Sizes of the rock .
3. Texture .
4. Density.

Answers

Answer:

3. Texture.

Explanation:

Igneous rocks texture refers to the size of minerals in the rock, which is assessed by how visible they are to the naked eye.

Why does a plant based diet provide fewer resources to produce

Answers

Answer: A plant-based diet requires less water to produce the food as it suppress all animal based products. In addition to consuming a lot of water to produce meat , livestock farming also pollutes water source because of the waste produced by the livestock ends up in waterways.

Explanation:

Answer:

I'm doing this so you can give smithpaige347 Brainliest

Explanation:

400 liters of a certain gas is collected at STP. What will the volume be at 273 C and 190 torr pressure?

Answers

Answer:

2.00 L of a gas is collected at 25.0°C and 745.0 mmHg. What is the volume at STP? STP is a common abbreviation for "standard temperature and pressure." You have to recognize that five values are given in the problem and the sixth is an x. Also ... 273 1. A gas has a volume of 800.0 mL at minus 23.00 °C and 300.0 torr.

Explanation:

The digestive system is a group of organs working together to...

Answers

The digestive system is a group of organs working together to convert food into energy and basic nutrients to feed the entire body. Food passes through a long tube inside the body known as the alimentary canal or the gastrointestinal tract
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