Kichi made a table to identify where she might find acids and bases in her house based on their common uses. Substance ammonium hydroxide sulfuric acid citric acid potassium hydroxide Location cleaning cabinet cosmetics bag refrigerator flashlight What error did Kichi make?
Ammonium hydroxide would be found in the pantry because it is found in vinegar.

Sulfuric acid would be found in the garage because it is used in car batteries,

Citric acid would be found in the garage because it is used to clean rust from metal.
Potassium hydroxide would be found in the kitchen cabinet because it is used in oven cleaner.​

Answer:

Potassium is more reactive than sodium. Potassium is a bigger atom and has lesser ionisation energy than sodium so it is more reactive.

Answer:

it is all of the above

Explanation:

Answer:

Molar mass = 99 g/mol

Explanation:

Phosgene contains carbon, oxygen and chlorine atoms. Its molecular formular is; COCl2

The molar mass is given as the sum off the individual atomic mass of the elements in the compound.

Molar mass = C + O + 2Cl

Molar mass = 12 + 16 + 2(35.5)

Molar mass = 99 g/mol

Answer:

The protons and electrons in each element are equal. The sulfur has 16 electrons and 16 protons. But the ionic atom's electron quantity changes depending on how many it has gained. 'S2-' has gained 2 electrons, which means it has now 18 electrons and 16 protons. 16 neutrons

Explanation:

Answer:

Keep the world safe and clean

Explanation:

safety = keep people inline and help them from making bad decisions

clean = keep the world from being polluted or trashy

Astronomy deals with the study of celestial objects such as moon, stars, sun, planets, etc.

Safety is the art of being protected from danger

Recycling is the process of waste conversion. That is, useful materials are generated from wastes.

Astronomers, in their exploration of extraterrestrial bodies, need to ensure that proper measures are taken to ensure their safety in these locations. Unhealthy practices such as deforestation and indiscriminate waste disposal may cause environmental hazards such as global warming. This is a threat to the atmosphere.

Therefore, wastes have to be converted to reusable products to discourage indiscriminate disposals. Hence the importance of the terms "safety" and "recycling" in astronomy.

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The  molarity of the HNO₃ solution : 0.212 M

Given

62.4 mL HNO₃

56.25 mL of a 0.235 M  KOH

Required

Molarity HNO₃

Solution

Titration formula

M₁V₁n₁=M₂V₂n₂

1= HNO₃, 2 = KOH

n = acid base valence (amount of H⁺/OH⁻ released,for HNO₃ and KOH = 1)

Input the value :

M₁ x 62.4 x 1 = 0.235 x 56.25 x 1

[tex]\tt M_1=\dfrac{0.235\times 56.25\times 1}{62.4\times 1}\\\\M_1=0.212[/tex]

Answer:

0.212

Explanation:

Limiting reactant : O₂

Mass of  N₂O₄ produced = 95.83 g

Given

50g nitrous oxide

50g oxygen

Reaction

2N20 + 302 - 2N204

Required

Limiting reactant

mass of N204 produced

Solution

mol N₂O :

[tex]\tt =\dfrac{50}{44}=1.136[/tex]

mol O₂ :

[tex]\tt =\dfrac{50}{32}=1.5625[/tex]

2N₂O+3O₂⇒ 2N₂O₄

ICE method

1.136    1.5625

1.0416  1.5625    1.0416

0.0944    0          1.0416

Limiting reactant : Oxygen-O₂

Mass N₂O₄(MW=92 g/mol) :

[tex]\tt =mol\times MW=1.0416\times 92=95.83~g[/tex]

Answer:

a chemical change

Explanation:

lighting a match is a chemical change. chemical reactions cause chemical change. in a chemical reaction two or more substances, called the reactants, form different substances called products. hope this helped :)

Answer:5 to the 7th power

Explanation:

Divided 7 and y then add 4

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 5.33×10²⁴moles are in 3.21×10²⁸ molecules of Nitrogen.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample.

Given number of molecules of nitrogen=3.21×10²⁸ atoms

we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number

mole of nitrogen=given number of atoms ÷ 6.022×10²³(Avogadro number)

Substituting the values

moles of nitrogen=3.21×10²⁸ ÷ 6.022×10²³

mole of nitrogen= 5.33×10²⁴moles

Therefore, 5.33×10²⁴moles are in 3.21×10²⁸ molecules of Nitrogen.

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Answer:

maile pani aii khojeko tmle sideko dekhya ani thicheko ani comment garya haha

Answer:

D

Explanation:

it's a star it has gas and makes it own light

Answer: it would stop producers from producing food.

Explanation: why? Without the action of the producers to turn sunlight into food, the producers would die, and consumers that rely on them would lose their food source and die too.

Answer:

It would stop producers from producing food

Explanation:

Producers would die, and if producers died, consumers would die too.

Hope this helps

Answer: metal and salt water

Explanation: salt starts to brake down metal and metal is everywhere in the ocean hope this helps

Answer:

baking a cake.

Explanation:

baking a cake is an example of a chemical reaction that happens daily because a new substance is forming when the cake is being baked. hope this helps! :)

Answer:

Sulphur

Explanation

Rhombic and monoclinic sulphur are its allotropic forms

Answer:

average velocity for the time interval from t = 2 s to t = 4 s? ... fractional difference in the two methods when a steady wind blows along the car's route and the ... weight, but when the film reaches the drop, the drop's water suddenly ... boat, moving with constant velocity, that is 12 m from the point of impact when the key is.

Explanation:

ABOVE

The average acceleration of the sail boat is 0.083 m/s². Thus option d is correct.

Acceleration is defined as the rate of change of velocity of an object with respect to time.

It is a vector quantity.

Acceleration can also be defined as the velocity change rate over time, in terms of both speed and direction

Average acceleration is defined as the rate of change of velocity of an object for the particular interval of time.

Average acceleration can also be defined as the change in velocity divided by the time elapsed.

It is measured in meter per second.

Average acceleration =  Change in velocity / time

                                    =  5.5 - 3.0 / 30.0

                                    =  0.083 m / s²

Thus, the average acceleration of the sail boat is 0.083 m/s². Thus option d is correct.

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Your question is incomplete, but probably your complete question was

A sudden gust of wind increases the velocity of a sailboat relative to the water surface from 3.0m/s to 5.5m/s over a period of 30.0s. Using the formula a=change in velocity /t, what is the average acceleration of the sailboat?

•2.5m/s2

•1.2m/s2

•25m/s2

•0.083m/s2

Answer:

4-Methyl-1-pentene

Explanation:

According to  the International Union of Pure and Applied Chemistry (IUPAC), IUPAC nomenclature of organic chemistry is defined as the system of naming organic chemical compounds.

There are certain rules for naming organic chemical compounds as per IUPAC. The name of given (CH3)2CHCH2CH=CH2 will be based on the same rules.

4-Methyl-1-pentene is the name of this chemical, as methyl is in 4th carbon position, Pent for 5 carbon chain and -ene (suffix) for one double bond).

Hence, the correct answer is "4-Methyl-1-pentene".

Explanation:

the average atomic mass of chlorine= (34.968 x 0.7553) + ( 36.956 x 0.2447) = 35.4545

Ca % = 100x (5 x 40/502 ) = 39.84 % ( where 502 is molar mass of comp)

P% = 3 x 30.97367 x 100/502 = 18.51 %

O % = (100x13x16)/502 = 41.434

H % = 100-39.84-18.51-41.434 = 0.216 %

% Ca = 100 x40/( 116) = 34.483 %

% Si = 100 x28/116 = 24.14 %

% O = 100-34.483-24.14 = 41.38 %

Answer:

108 g

Explanation:

Answer:

answer in picture

Explanation:

Answer:

The answer is 9.000090040048176

Answer:

In a direct democracy, which is also called pure democracy the decisions are not taken by representatives. All decisions are voted on by the people. When a budget or law needs to be passed, then the idea goes to the people. Large governments rarely make decisions this way

Explanation:

I don't think direct democracy works well unless the population is homogenous and agree on major issues

Stoichiometry is used for calculating the mass of a product from the number of moles of reactants. The correct option is A.

Stoichiometry is made up of two words, stoikhein, which means element, and metron, which means measure. Stoichiometry is a method of determining the data by using the knowledge of reactants and products.

There are five steps of stoichiometry that are the following:

Thus, the correct option is A. Calculating the mass of a product from the number of moles of reactant.

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Answer:

SO SORRY it took so long but the answer is B :)

Explanation:

Trust me and good luck :)

The theory that the planets move around the sun was endorsed by Aristarchus, Copernicus, as well as Galileo. The solar system revolves around the sun.

Aristarchus of Samos was just a Greek astronomer that suggested the very first heliocentric model of the cosmos, wherein the sun, rather than the earth, was even at its center. Despite the fact that his hypothesis was acknowledged by other philosophers of the time, it was dismissed as unrealistic, and the geocentric model remained in use for the next 1,700 years.

Copernicus was also the first to assert that the Earth as well as the other planets orbit the sun. It was really a significant shift in thinking.

Sun can be considered as a star in solar system.

The theory that the planets move around the sun was endorsed by Aristarchus, Copernicus, as well as Galileo. The solar system revolves around the sun.

Therefore, the correct answer will be option (b).

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Answer:

Cell division.

Explanation:

Explanation:

CH4+8/2Cl2—>CCl4+4HCl

that is,1molecule of methane+8/2 molecules of dichlorine—>1molecule of carbon tetrachloride+4molecules of hydrogen chloride

Answer:

[tex]H_2(g)+O_2(g)\rightarrow H_2O_2(g)[/tex]

Explanation:

Hello!

In this case, since the formation reaction of a compound is undergone when the pure elements composing it are combined, for gaseous hydrogen peroxide, gaseous diatomic hydrogen and oxygen (standard state) must be combined in order to obtain the gaseous hydrogen peroxide as shown below:

[tex]H_2(g)+O_2(g)\rightarrow H_2O_2(g)[/tex]

Whereas it is proved there are two hydrogen and oxygen atoms at each side of the chemical equation and therefore it is balanced.

Best regards!

Answer:

120.37 g/mol is the molar mass of magnesium sulfate

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 9.033×10²³ is the number of molecules in 1.500 mole of H[tex]_2[/tex]O.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

Mathematically,

number of atoms/molecules=number of moles × 6.022×10²³(Avogadro number)

number of moles =1.500 mole

substituting all the given values in the above equation, we get

number of atoms/molecules=1.500  × 6.022×10²³(Avogadro number)

number of atoms/molecules =9.033×10²³molecules

Therefore, 9.033×10²³ is the number of molecules in 1.500 mole of H[tex]_2[/tex]O.

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