b
Lau
C)
Why is sulphuric acid kept in the glass bottle? in fire extinguisher

Answers

Answer 1

Answer:

A glass bottle kept inside the container has sulphuric acid in it. When the knob of the extinguisher is pressed, the bottle breaks. The acid comes in contact with sodium carbonate and carbon dioxide is produced. The carbon dioxide comes out through the nozzle which is directed towards the fire.


Related Questions

Plz help answer this question

Answers

a) compound
b) mixture
c) element

Answer:

A compound

B mixture

And C Element

Explanation:

11. Acids are described as being because they dissolve some metals.​

Answers

Answer:

Corosive

Explanation:

CORRECT

Answer:

Corosive

Explanation:

Hope this will help

pls help 6th grade science

Answers

Answer:

C.)

Explanation:

I also saw this question on Brainly! Hope this helps!

what is the correlation between the number of mole of ions in the solution and the freezing point

Answers

Answer:

13.9

Explanation:

parasitic protists passed by mosquitoes causes this disease

Answers

Answer:

Malaria

Explanation:

Mosquitos mainly carry Malaria since the dawn of men.

Answer:

malaria

Explanation:

"Malaria" is a mosquito-borne illness that is caused by a parasitic protist called "Plasmodium protozoa." These parasites are carried by mosquitoes. Once a mosquito bites a human, it creates an opening for the parasites to enter. The parasites then become harmful once they enter the human body. They infect the human's Red Blood Cells (RBCs), which causes several symptoms such as fever, fatigue, headache, cough, nausea, etc.

25.0(g) of pentane(C5H12) is combined with excess oxygen

Answers

Answer:Hlo

Explanation:How are you?

I will give brainliest and so many points

Answers

You would take 10 minus one to get 9 and divid it by 3 to get 3. You take 7 plus 1 to get 8 and divided 16 to get 2.

Which function is not associated with cartilage?

Answers

Answer:

Cartilage does not contain blood vessels (it is avascular) or nerves (it is aneural). Some fibrocartilage such as the meniscus of the knee does however have blood supply in part. Nutrition is supplied to the chondrocytes by diffusion.

the taste of acid is sour​

Answers

yes the taste of acid is sour

Explanation:

the acid increase the hydrogen concentration, which provides more ions for the tongue. Because the tongue gains ions, it registers the flavor as sour.

this is actually science and I will give brainliest but u have to show your work​

Answers

Answer:

I think it's 3.01 meters per second

To find the speed, you divide distance by time. So, you do 100 divided by 33.2, which equals 3.01 I think. I hope this helped.

What do you use to determine molar mass?

Answers

Answer:

the molar mass of any element can be determined by finding the atomic mass of the element on the periodic table for example, if the atomic mass of sulfer is 32.066 amu, then it's molar mass is 32.066 g / mol

is Fe2(CO3)3 soluble?

Answers

Yes it’s a soluble because the carbonate should dissolve in any strong acid with much effervescence

2. A sample of oxygen gas is placed in a rigid 1.5L glass container at STP. If the gas is
heated to 100 degrees (Celcius) what is the new pressure in mmHg?

Answers

The new pressure : P₂ = 1038.39 mmHg

Further explanation

Given

1.5 L container at STP

Heated to 100 °C

Required

The new pressure

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure).

So P₁ =  1 atm = 760 mmHg

T₁ = 273 K

T₂ = 100 °C+273 = 373 K

Gay Lussac's Law  

When the volume is not changed, the gas pressure is proportional to its absolute temperature  

[tex]\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]

Input the value :

P₂=(P₁.T₂)/T₁

P₂=(760 x 373)/273

P₂ = 1038.39 mmHg

How many grams of Ag are produced if I start the reaction with 5.5 mol Cu?

Equation given:
Cu + 2AgNO3 -> 2Ag + Cu(NO3)2

Answers

Answer:

9.34 g Ag

Explanation:


The symbol equation for combustion of a hydrocarbon is shown below. What number will go before the oxygen reactant when
this equation is balanced?

Answers

Answer:

Yes it is indeed

Explanation:

Thanks if you found this helpful

The balanced chemical equation is  [tex]\rm C_3H_8 + 5O_2- \rightarrow 3CO_2 + 4H_2O[/tex].

What is chemical equation?

Chemical equation is defined as a formulation of mathematics that captures the chemical reaction. We can learn about the reactants and products involved in a chemical reaction by developing a chemical equation. It includes the symbols for the atoms of each element found in the compound, together with a count of how many of each element there are overall in the form of subscripts.

Chemical equations must be balanced in order to satisfy the law of conservation of mass, which states that "the total mass of all products of reaction in a chemical reaction is equal to the total mass of all reactants." A chemical equation is said to be balanced when the number of various elemental atoms on the reactants and products sides are equal. Chemical equations must be balanced by a process of trial and error.

Thus, the balanced chemical equation is [tex]\rm C_3H_8 + 5O_2- \rightarrow 3CO_2 + 4H_2O[/tex].

To learn more about chemical equation, refer to the link below:

https://brainly.com/question/28294176

#SPJ2

Chemical Reaction Type of reaction

2NaCl 2Na + Cl2 _________________________

CaCl2 + F2 CaF2 + Cl2 _________________________

AgNO3 + KCl AgCl + KNO3 _________________________

N2 + H2 2NH3 _________________________

C3H8 + 5O2 3CO2 +4 H2O _________________________

Answers

Answer:

Explanation:

2NaCl 2Na + Cl2         synthesis reaction

CaCl2 + F2 CaF2 + Cl2          oxidation-reduction

AgNO3 + KCl AgCl + KNO3      precipitation reaction

N2 + H2 2NH3      i dont know

C3H8 + 5O2 3CO2 +4 H2O Balanced Chemical Reactions and the Conservation of Mass

PLEASE HELPPPP...If you have a mass of 70 kg and you are standing on a platform 8 m above the ground, what is your gravitational potential energy?

Answers

Answer: 5491.72

Explanation:

How much heat is released when 24.8 g of ch4 is burned in excess oxygen gas?

Answers

The given question is incomplete. The complete question is:

How much heat is produced when 24.8 g of [tex]CH_4[/tex] is burned in excess oxygen gas

Given: [tex]CH _4 +2O_2\rightarrow CO_2+2H_2O[/tex]  ΔH= −802 kJ.

Answer: 1243.1 kJ

Explanation:

Heat of combustion is the amount of heat released on complete combustion of 1 mole of substance.

Given :

Amount of heat released on combustion of  1 mole of methane = 802 kJ kJ/mol

According to avogadro's law, 1 mole of every substance occupies 22.4 L at NTP, weighs equal to the molecular mass and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.

1 mole of [tex]CH_4[/tex] weighs = 16 g  

Thus we can say:  

16 g of [tex]CH_4[/tex] on combustion releases heat = 802 kJ

Thus 24.8 g of [tex]CH_4[/tex] on combustion releases =[tex]\frac{802}{16}\times 24.8=1243.1kJ[/tex]

Thus heat released when 24.8 g of methane is burned in excess oxygen gas is 1243.1 kJ

Identify the reaction
In pic

Answers

Single displacement (I did some googling so if it's wrong I'm so srry)

a primary substance that cannot be divided into separate substances; one of about 112 different basic varieties of matter making up the universe

Answers

Answer:

No you can not divide a primary substance into a seperat one because ot wpuld be like divideing the universe

What happens in a
neutralisation reaction.

Answers

Answer:

A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water. Salts are also formed in this reaction.

Explanation:

1. What are commonly called as "shooting stars"?
A. asteroids
B. comets
C. meteors
D. meteorites

2. What are found in the circular or somewhat like "doughnut-shaped"
region between Mars and Jupiter?
A. asteroids
B. comets
C. meteors
D. meteorites

3. Which Near-Earth Objects (NEO) are found on the Kuiper Belt and Oort
Cloud?
A. asteroids
B. comets
C. meteors
D. meteorites

4. What are comets made of?
A. dust only
B. metal only
C. dust and metal
D. dust, metal, and ice

5. What do you call the shining "head" around a comet?
A. coma
B. crown
C. halo
D. ring​

Answers

Answer:

I hope I can help you

I hope I can help you

A fixed mass of oxygen gas occupies 300cm cube at 0 degree centigrade. what volume would the gas occupy at 15 degree centigrade​

Answers

Answer:

Volume occupied by oxygen gas at 15 degree centigrade​ is equal to [tex]316.5[/tex] centimeter cube

Explanation:

Assuming Pressure is constant.

[tex]\frac{V_1}{T_1} = \frac{V_2}{T_2}[/tex]

where T1 and T2 are temperature in Kelvin

Substituting the give values we get-

[tex]\frac{300}{273} = \frac{V_2}{288}[/tex]

[tex]V_2 = \frac{288*300}{273} \\V_2 = 316.5[/tex]

Volume occupied by oxygen gas at 15 degree centigrade​ is equal to [tex]316.5[/tex] centimeter cube

4. A separating funnel can be used to separate a mixture of two________ liquids. *
a) miscible
b) homogenous
c) immiscible
d) distilled

Answers

Answer:

d) distilled

Explanation:

A separatory funnel, also known as a separation funnel, separating funnel, or colloquially sep Funnel and fractionating Funnel. , is a piece of laboratory glassware used in liquid-liquid extractions to separate (partition) the components of a mixture into two immiscible solvent phases of different densities.

Answer:

d) distilled

Explanation:

Correct!!!

What are calories used for?

hurry pls!

Answers

Answer:

Calories are used for physical activity.

Explanation:

Calories provide energy for consumers. You may notice when you drink or eat, you gain more energy. This is because calories are stored in our drinks and foods.

Answer:

They are

Explanation:

They are used to make people obese. The government uses calories to make people weak and unhealthy. For example, McDonalds is known to have many calories in their food. I hate the government.

49. Identify the noble gas that has atoms in the ground state with the same electron configuration as the nitrogen in a molecule of isocyanic acid

Answers

Answer:

Neon (Ne)

Explanation:

Nitrogen in it's neutral state has valency of 5 and it's electronic configuration is  given as;

1s2 2s2 2p3

However in isocyanic acid, it forms a covalent bond with hydrogen and carbon. Due to this bond, it is able to achieve stable octet configuration. The configuration is given as;

1s2 2s2 2p6

This is the same electronic configuration as Neon

true or false
sugar melting an example of oxidation
and
water evaporating

Answers

Answer:

false i think

Explanation:

Barium chloride solution was used to test for sulfate ions in the presence of dilute hydrochloric acid. What color precipitate would
form if sulfate ions were present?

Answers

Answer:

white

Explanation:

A white precipitate of barium sulfate forms if sulfate ions are present. The hydrochloric acid is added first to remove any carbonate ions that might be present - they would also produce a white precipitate, giving a false positive result. Barium nitrate solution can be used instead of barium chloride solution

The state of matter with the highest kinetic
energy is
A. solid
B. liquid
C. gas

Answers

C. gas, is the correct answer i hope this helps:)

Guys help please!! any five effects of heat!!​

Answers

[tex] {\huge {\underline {\underline {\bold {\blue{Effects \: of \: Heat}}}}}}[/tex]

Expansion of particles of substances. Increase in temperature.Change in state.Change in physical propertyIt may bring out chemical changes.

__________________________________

[tex] \tt\underline\orange{hope \: it \: helps}[/tex]

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