write a word equation for the reaction between dilute hydrochloric acid and magnesium

Answers

Answer 1
Magnesium reacts with hydrochloric acid according to the equation: Mg(s) + 2 HCl(aq) --> MgCl 2(aq) + H 2(g) This demonstration can be used to illustrate the characteristic reaction of metals with acid, a single replacement reaction, or to demonstrate the generation of hydrogen gas.

Related Questions

An opening volumetric cylinder filled with water at volume 0.003m after period of
time the water in the cylinder is just evaporated what is the work done by this process?​

Answers

Answer:

= - 303.975 Joules

Explanation:

Given that:

The volume of the cylinder = 0.003 m^3

Now, to liters:

The volume = 0.003 *1000 L

= 3 L

For an open cylinder, we mean the atmospheric pressure is at standard condition.

Thus, the workdone = -PΔV

= - 1 atm (3 L)

= - 3 L atm

1 L atm to Joules

= 101.325 Joules

Therefore;

=- 3* 101.325 Joules

= - 303.975 Joules

What BEST describes these three molecules?

Answers

They are structural isomers

You have seen that in most of the packed foodstuff,an expiry date is usually printed.If we use that food-stuff after the expiry date,it gives a bad smell and a bad taste. i) Why does the food give a bad taste and bad smell after the expiry date ii) Write any two methods used by the food industry to prolong the life of packed food.

Answers

Explanation:

For (i):

The oxidation reaction is defined as the reaction where the gain of oxygen atoms or the loss of hydrogen atoms takes place.

Foodstuff tastes bad and releases A bad odour due to the oxidation of food items and this process is called rancidity.

For (ii):

To prevent food from getting rancid, various processes can be used:

Using airtight containers to avoid contact with oxygenUsing anti-oxidation to avoid oxidationInserting nitrogen gas into the packaged food items

6 ways of saving energy​

Answers

Answer: 21 tips: no-cost ways to save electricity

Turn off unnecessary lights.

Use natural light.

Use task lighting.

Take shorter showers.

Turn water off when shaving, washing hands, brushing teeth.

Fix that leaky faucet.

Unplug unused electronics.

Ditch the desktop computer.

Explanation:

Hope it helps you if not sorry

When an Li atom becomes an Li+ ion, the Li atom

Answers

Answer:When a lithium atom forms an Li+ ion, the lithium atom (1) gains a proton (2) gains an electron (3) loses a proton (4) loses an electron

which compounds are an alkanes, CnH2n+2? pls reply fast!​

Answers

Answer:

Methane

Explanation:

Alkanes have the molecular formula of "CnH2n+2" which means for every carbon molecule there are two hydrogens plus two more. For example when there is one Carbon there are four hydrogens, this molecule is known as "Methane"


Given the reaction:
Sn2+ (aq) + 2Fe3+ (aq) → Sn4+ (aq) + 2Fe2+ (aq)
The oxidizing agent in this reaction is?
A Sn2+
B Fe3+
C Sn4+
D Fe2+

Answers

A. Sn2+ is the oxidizing reaction

What similarities are there between Beta Radiation and Alpha Radiation

Answers

The largest particle, Alpha, has the least penetrative power. Positive charge is carried by alpha particles. Two neutrons and two protons are bound together to form an alpha particle. The helium-4 nucleus was later identified as the alpha particle. Among the three types of radioactive emissions, alpha particles have the most mass. An alpha particle has approximately 8000 times the mass of a beta particle. The penetrative power of an alpha particle is reduced due to its large size.

Beta particles are negative-charged high-energy electrons or positrons. Beta particles have a higher penetrative power than alpha particles due to their smaller size.

Hope this helps and if it does, don't be afraid to give my answer a "Thanks" and maybe a Brainliest if it's correct?  

sains
baby 6 Said dan alkali​

Answers

Answer:

your image is not proper

Se trata 50 g de aluminio que posee 10% de impurezas con suficiente cantidad de ácido sulfúrico ¿qué peso de sulfato de aluminio se obtiene si el porcentaje de rendimiento fue de 70%? P.A. (uma): Al: 27, S = 32, O = 16

Answers

Respuesta:

199.5 g

Explicación:

Paso 1: Escribir la reacción balanceada

2 Al + 3 H₂SO₄ ⇒ Al₂(SO₄)₃ + 3 H₂

Paso 2: Calcular la masa pura de 50 g  de Al

Aluminio tiene 10% de impurezas, es decir, 10% de 50 g = 5 g. Luego, tiene 50 g - 5 g = 45 g de Al puro.

Paso 3: Calcular la masa teórica de Al₂(SO₄)₃ obtenida a partir de 45 g de Al

La relación de masas de Al₂(SO₄)₃ a Al es 342:54.

45 g Al × 342 g Al₂(SO₄)₃/54 g Al = 285 g Al₂(SO₄)₃

Paso 4: Calcular la masa real de Al₂(SO₄)₃ obtenida

El rendimiento de la reacción es de 70%.

285 g × 70% = 199.5 g

HELP WILL GIVE BRAINLIEST!!
Using the following reaction, calculate the percent yield of CaO if 20.4g of CaCO3 are heated and 10.6g of CaO are actually produced


CaCO3(s) → CaO(s) + CO2(g)

Answers

Answer:

92.79%

Explanation:

The Molar mass :

Molar mass of CaC03 = (40 + 12 + (16*3)) = 100 g/mol

Molar mass of Ca0 = (40 + 16) = 56 g/mol

Theoretical yield :

20.4g CaCO3 * 56g Ca0 / 100g CaCO3

= (20.4 * 56)/100 = 11.424 CaO

The actual yield Given is : 10.6g Ca0

The percentage yield is given by :

% yield = Actual yield / theoretical yield

% yield = 10.6 g / 11.424 g * 100%

% yield = 0.9278711 * 100%

Percentage yield = 92.79%

A toy car that is 0.12 m long is used to model the actions of an actual size car that is 6 m long which ratio shows the relationship between the sizes of the model and the actual car ?

Answers

Answer:

The correct answer is - 1:50.

Explanation:

Given:

Model toy car = 0.12 m

Actual size of car = 6 m

The ratio of model and actual car size = ?

Solution:

We know that 1 m = 100 cm

then, Model toy car - 0.12*100 = 12 cm

and size of the actual car - 6*100 - 600 cm

Then the ratio of  model and actual car size = model car size/ actual car size

= 12/600

= 1/50

Thus, the correct answer is - 1:50.

what is the purpose of environmental regulations on chemicals

Answers

Answer: EPA regulates the production and distribution of commercial and industrial chemicals, in order to ensure that chemicals for sale and use in the United States do not harm human health or the environment.

Explanation:

A student who is performing an experiment must measure out 0.02-mL of 0.50-M HCl. The most accurate piece of equipment to measure the quantity would be a?


A) 50 mL buret

B) 25 mL graduated cylinder

C) 10 mL cylinder

D) 1 mL pipet

Answers

Answer:

Choice D) 1 mL pipet

Explanation:

If you are trying to extract 0.02 mL of HCl, you are going to need a piece of equipment that can measure very small units. Thus, Choice D would be the correct answer.

is it true that the most reactive metals are quite plentiful in the Earth's crust?​

Answers

Answer:

yes

Explanation:

as it had got crushed down in the dinosaurs age

Select the correct answer.
A sample taken from a layer of mica in a canyon has 2.10 grams of potassium-40. A test reveals it to be 2.6 billion years old. How much
potassium-40 was in the sample originally if the half-life of potassium-40 is 1.3 billion years?
O A.
4.20 g
O B.
8.40 g
O C.
12.6 g
• D.
16.8 g
O E.
25.2 g

Answers

Answer:

8.36 g

Explanation:

From;

0.693/t1/2 = 2.303/t log (No/N)

t1/2 = half life of potassium-40

t = age of the sample

No= initial amount of the sample

N= amount of the sample at time t

Substituting values;

0.693/1.3 × 10^9 = 2.303/2.6 × 10^9 log (No/2.10)

5.33 × 10^-10 = 8.86 × 10^-10 log (No/2.10)

5.33 × 10^-10/8.86 × 10^-10 = log (No/2.10)

0.6 = log (No/2.10)

Antilog (0.6) = (No/2.10)

No = 2.10 × Antilog (0.6)

No= 8.36 g

A helium tank has a volume of 13.0 L at a pressure of 26.5 atm. What is
the volume of the same amount of helium at a pressure of 1.25 atm?

Answers

Answer: 275.6 L

Explanation: We use Boyle's Law to solve this.

The initial pressure (P1) is 26.5, the initial volume (P1) is 13.0 L[tex]344.5/1.25[/tex], and the final pressure (P2) is 1.25. Using Boyle's Law, we plug in the values into the equation.

P1V1=P2V2

(26.5 atm)(13.0 L) = (1.25 atm) V2

As a regular equation, we solve for V2.

344.5 atm/L= (1.25 atm) V2

344.5 atm/L / 1.25 atm = V2

275.6 = V2

The atm value cancelled out and we are just left with the L value.

1. The science that deals with heredity and the factors affecting the transmission of the characteristics is
2. The trait that is usually hidden and will just come out on the second generation is
3. The appearance of the offspring is referred to as
4. The genetic make-up of the genes of the offspring is
5. Having two identical alleles of a particular gene or genes is called
6. The father of Science of Genetic is
7. It is the trait that is being expressed in an organism.
8. The extent to which something is probable is
9. The offspring of two plants/animals of different species or varieties is called
10. It is the number of times that the genotype would appear in an offspring after a test cross is
11. The relative number of offspring manifesting a particular trait or a combination of traits.
12. Having two different alleles of a particular gene or genes is

Answers

Answer:

1-Genetics

2-Alleles

3-Organism's genotype

4-Phenotypes and Genotypes

5-Allele

6-Gregor Mendel

7-Genotype

8-Probability

9-Hybrid

10-Genotypic Ratio

11-Phenotypic ratio

12-Heterozygous

Explanation:

Example of fundamental units?​

Answers

Answer:

are the units of the fundamental quantities, as defined by the International System of Units

Explanation:

because

Mass in kg
Time in seconds
Length in meter
Current in ampere
Temperature in kelvin
There are more examples but this might be enough

Antara berikut ciri manakah bear tentang cuka?
A. Berasa pahit.
B. Berasa tawar.
C. Nilai pH kurang dari 7
D. Nilai pH ialah 7​

Answers

C, because vinegar ph scale is 2.5

Answer:

c. nilai pH kurang dari 7

Explanation:

cuka adalah acid

nilai pH bagi acid adalah

antara 1 hingga 6

6. Which of the following could be a base in a water solution?
a. Br-
b. NH+4
c. H2O
d. NO-3
e. Ca2+
f. C2H3O-2

Answers

Answer:

h20

Explanation:

H2O is an acid and a base, and H20 is water.

Which ionic equation describes a redox reaction? A. Ag(+) + Cl- = AgCl B. 2H(+) + CO3(2-) = CO2 + H2O C. H(+) + OH(-) = H2O D. Zn + Cu(2+) = Zn(2+) + Cu The marking scheme of the past paper this question is from says that the answer is D but how?

Answers

Answer: The correct option is D. [tex]Zn+Cu^{2+}\rightarrow Zn^{2+}+Cu[/tex]

Explanation:

Redox reaction is defined as the reaction in which oxidation and reduction take place simultaneously. It is known as the reaction in which the exchange of electrons takes place.  

The oxidation reaction is defined as the reaction in which a chemical species loses electrons in a chemical reaction. It occurs when the oxidation number of a species increases.

A reduction reaction is defined as the reaction in which a chemical species gains electrons in a chemical reaction. It occurs when the oxidation number of a species decreases.

From the given ionic reactions:

[tex]Zn+Cu^{2+}\rightarrow Zn^{2+}+Cu[/tex]

On the reactant side:

Oxidation number of Zn = 0

Oxidation number of Cu = +2

On the product side:

Oxidation number of Cu = 0

Oxidation number of Zn = +2

As the oxidation number of Zn is increasing from 0 to +2. Thus, it is getting oxidized. Similarly, the oxidation number of Cu is decreasing from +2 to 0. Thus, it is getting reduced. Therefore, forming a redox couple

Hence, the correct option is D. [tex]Zn+Cu^{2+}\rightarrow Zn^{2+}+Cu[/tex]

Nitrogen in plants and soil is changed into nitrogen compounds by _____.


nitrogen fixation

respiration

denitrification

photosynthesis

Answers

Answer:

A

Explanation:

because It's the process by which atmospheric nitrogen is converted either by a natural or an industrial means to form of nitrogen such as ammonia.

What type of nuclear decay is shown by the reaction below?

A. Alpha
B. Gamma
C. Beta
O D. Fission

Answers

Answer:

C. Beta

Explanation:

In what way are electrons quantized?
O A. They have fixed energy values.
they
OB. They can be gained and lost.
O C. They are negatively charged.
O D. They form bonds in molecules.

Answers

Answer: The correct option is A) They have fixed energy values.

Explanation:

Electron is one of the sub-atomic particle present around the nucleus of an atom which is negatively charged.

In an atomic model, it is assumed that the electron revolves around the nucleus in discrete orbits having fixed energy levels.

These electrons when jumping from one energy level to another, some amount of radiation is either emitted or absorbed.

These fixed energy levels are given by the Bohr model and thus, the electrons are quantized.

Hence, the correct option is A) They have fixed energy values.

Answer: They have fixed energy values

Explanation: a pex

In your OWN words explain how season are formed

Answers

Answer: Weather currents change wind tempature and there for change the weather of the seasons.

I am assuming that you mean seasons.
Seasons are formed through the Earth orbiting the sun and the Earth rotating.

Determine el PH y el % de disociación de una solución de ácido débil, sabiendo que se disuelven 20 gramos del ácido (masa molar= 55 grs) en un volumen total de 2100 ml. Ka=1,65 x 10 -8

Answers

Answer:

pH = 4.27. Porcentaje de disociación: 0.03%

Explanation:

El pH de un ácido débil, HX, se obtiene haciendo uso de su equilibrio:

HX(aq) ⇄ H⁺(aq) + X⁻(aq)

Donde la constante de equilibrio, Ka, es

Ka = 1.65x10⁻⁸ = [H⁺] [X⁻] / [HX]

Como los iones H⁺ y X⁻ vienen del mismo equilibrio podemos decir:

[H⁺] = [X⁻]

[HX] es:

20g * (1mol/55g) = 0.3636moles / 2.100L = 0.1732M

Reemplazando es Ka:

1.65x10⁻⁸ = [H⁺] [H⁺] / [0.1732M]

2.858x10⁻⁹ = [H⁺]²

5.35x10⁻⁵M = [H⁺]

pH = -log[H⁺]

pH = 4.27

El porcentaje de disociacion es [X⁻] / [HX] inicial * 100

Reemplazando

5.35x10⁻⁵M / 0.1732M * 100

0.03%

Una muestra de 2,5000 (g) de piedra caliza, se disuelve y se precipita el Calcio como oxalato de Calcio (CaC2O4), este precipitado se calcina transformándose en Carbonato de Calcio (CaCO3). El peso de este compuesto es de 1,2093 (g). Calcular el % de Calcio en la muestra

Answers

Answer:

[tex]\%Ca=19.378\%[/tex]

Explanation:

¡Hola!

En este caso, basado en la información dada, es posible conocer la masa de calcio en carbonato de calcio, que de hecho es la misma en la muestra, al utilizar el siguiente esquema de cálculo:

[tex]m_{Ca}=1,2093gCaCO_3*\frac{1molCaCO_3}{100.1gCaCO_3}*\frac{1molCa}{1molCaCO_3}*\frac{40.1gCa}{1molCa}\\\\m_{Ca}=0.48444gCa[/tex]

Finalmente, calculamos el porcentaje requerido como sigue:

[tex]\% Ca=\frac{0.48444g}{2.5000g} *100\%\\\\\%Ca=19.378\%[/tex]

¡Saludos!

PLEASEE HELLLPPP mE WITH THE QUESTIONS I POSTE DIL MARK U THE BRAINLIEST I SWEAAARr

Answers

Answer:

PIEASE E first write question

I will see what I can do

5. Which choice best represents the relationship between wavelength and frequency?
when frequency decreases, wavelength decreases
there is no relationship
when frequency increases, wavelength increases
O when frequency decreases, wavelength increases

Answers

when frequency increases, wavelength increases
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The Xu Corporation uses a periodic inventory system. The company has a beginning inventory of 2,150 units at $24 each on January 1. Xu purchases 2,400 units at $23 each in February and 1,150 units at $25 each in March. There were no additional purchases or sales during the remainder of the year. Xu sells 1,100 units during the quarter. If Xu uses the weighted average method, what is its cost of goods sold for the quarter If ABCD is a parallelogram,what is the value of x? answersa.) 46b.) 82c.) 38d.) 44e.) 69f.) 37 3.5.2 Test (CST): Computer-Scored Unit TestQuestion 18 of 25Why does having a genetically diverse population make a species more likelyto survive a change to the environment?A. They are more likely to reach carrying capacity.B. They are more likely to have harmful mutations.C. They are more likely to become an invasive species.D. They are more likely to have some individuals adapted for survival. What is cramer's rule ?? in an isosceles triangle KLM, K is congruent to M and m M=55. find the m L 12x15y=4140; x+y= ? solve. Why was Haile Selassie unhappy with the way the League dealt with the Italian invasion of Abyssinia? what does 18% of 50 equal PLEASEEE HELPPP!! Due today!!!! Etymology is the study of the histories of words. A specific term's etymology traces the different sounds and words that came together to form the term.Which word was MOST LIKELY part of the etymology of the term "cardiologist"?a. carb. heartc. gistd. logic What is the measure of the length of AB What is your math story? How do you use math in your everyday life? How can the transportation and communication system develop a country what is absolute location Unit 2: Technology and Production Tools / Determine knowledge Which of the following statement is true regarding external hard drives? It is a portable version of the computer's internal hard drive. DOC External hard drives only connect via universal serial bus (USB). External hard drives only connect via FireWire cable. It is a portable version of a thumb drive. One attempt I don't know. Brainstorm a list of at least 10 questions about this artwork.Review the list of questions you made and star the questions that seem the most interesting to you.Select one of the starred questions and discuss it in detail on the discussion post.Please positively comment and add ideas on at least three discussion posts.What new ideas do you have about the artwork that you did not have before? PLEASE HELP URGENT Give evidence and proof no links1/What is the correct written expression for the variable expression: (3 - x)/7 *the difference of 3 and x divided by 73 divided by the difference of 7 and xthe sum of 3 and x divided by 7the difference of 3 divided by 7 and x2.Johnny is 5 less than 3 times the age of Elizabeth. If Elizabeth is e years old, which expression shows Johnny's age? *3e - 53e + 55 - 3e5 + 3e3.What is the value of 4a - 7b - 8, when a = 7 and b = 3? *115-1-454.Jose has g video games. Tony has 8 fewer games than Jose. What variable expressions represents the total number of video games Jose and Tony have? *g + 82g + 8g - 8g + (g - 8)5. Which written expression represents the variable expression 1/2 (8 - y) *One half of eight less than a number yA number y less than half of eightOne half the difference between eight and a number ythe difference of one half of eight and a number y 10.What were we trying to prove about Mars by making our claims aboutthe channel on Mars?that Mars was once habitablethat Mars was better to live on than the Earththat Mars had rocksthat Mars had volcanoes Estimate the perimeter and the area of the shaded figure to the nearest tenth. i need help asapi need to know how to show work