Pls Help, I Will Give Brainlist If You Answer Correct. Pls (2024)

Chemistry High School

Pls Help, I Will Give Brainlist If You Answer Correct. Pls (1)

Answers

Answer 1

Explanation:

The union of vinegar and bicarbonate produces carbon dioxide

The carbonic acid, which is weaker, in turn breaks down into water and carbon dioxide, which being volatile separates

will observe a yellow color, confirming that BASIC HYDROLYSIS has taken place. To the touch the bottle cools and in the end a white deposit may remain on the bottom.

Related Questions

A small plastic cup is floating in a pan of water. Inside the cup is one quarter. For an experiment, students take turns adding quarters to the cup one quarter at a time. Making observations after each quarter is added to the cup, the students will notice something about the water level in the pan. What do they notice about the water level?

A: The cup will sink

B: The cup will go up

C: The level will go down

D: The level will remain the same

i dont know why is says high school im in middle school

Answers

A. The cup will sink
Additionally, the water level will rise.

Answer:

Explanation:

A

Help!
Can someone give the reactions, along with their names, associated with haloalkanes, haloarenes, alcohols and phenols.
Thanks! ^^​

Answers

Answer:

First 1-5 in pics

I can't upload further reactions

Explanation:

sandmeyer's reactionswarts reactionFinkelstein reactionwurtz reactionreimer teimann reaction

6. Lucas test

ROH + Zncl2 +HCl ---> RCl + H2O

7. esterification

R-OH +R’-COOH +H+↔ R’-COOR

Electrons determine the of an atom

Answers

Answer:

if u know the number of electrons u also know the number of protons present in the atom.

I've a project about (air pollution), I want a questions about the topic, can anyone help me pls?​

Answers

Answer:

different ways to pollute the air

Explanation:

just think of it like this what is black smoke to nothing lol the black smoke goes up into the atmosphere and pollutes the air just as somebody throwing trash into the ocean and polluting the ocean

Why is an atom called electrically neutral?

Answers

Explanation:

Protons and electrons are both found in an atom...

Protons are positively charged while electrons are negatively..

Since the two have opposite charges... they cancel each other making the atom with no charge ( neutral)

Answer:

Electrons have electric charge of -1 and the number of electrons in an atom is equal to the number of protons.

pls help !

1.) pick 5 common alloys. list the name, elements and advantages of the alloy

2.) are all elements in alloys metals? explain.

Answers

#1

Stainless Steel:-

Elements=Iron,Steel

Used in making of cooking utensils and other architectures.

Nickrom wire:-

Elements=Nickel, Chromium

Used in making heat utensils like heater,oven etc.

Brass:-

Elements=Copper, Zinc

Used in making different utensils .

Bronze:-

Elements=Copper,Tin

Used in making medals.

Magnalium:-

Elements=Aluminium, Manganese

Used in making aircraft parts.

#2

Yes all are metals .Metals can create more alloys than non metals so we use metals much.

If you know that MW of unknown compound is 138 g, what will be mass of 0.51 moles? Numeric answer needs two places past decimal. Please include unit by its symbol, not by its name.​

Answers

The mass of the compound required in the given number of moles is 70.38 g.

The given parameters;

molecular weight of the compound, Mw = 138 gnumber of moles of the compound, n = 0.51 mole

The mass of the compound that will be required in the number of moles is the product of the molecular weight of the compound and its number of moles available.

The mass of the compound required in the given number of moles is calculated as follows;

mass = moles x molecular weight

mass = 0.51 x 138

mass = 70.38 g

Thus, the mass of the compound required in the given number of moles is 70.38 g.

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Home work)
Write the word equation for the reaction
of these metals with Oxygen?
1. Magnisium :
2 Iron:
3 Copper:

Answers

Answer:

1. Magnesium + Oxygen --> Magnesium oxide

2.Iron + Oxygen --> Iron oxide

3.Copper + Oxygen --> Copper oxide

Explanation:

When an Element such as Magnesium or any other Elements are reacted eith Oxygen it forms an Oxide.

If you ever need the symbol equation here it is too :

1. Mg + O --> MgO

2.Fe + O --> FeO

3.Cu + O--> CuO

A chromatogram has three bands with Rf values of 0.25, 0.47 and 0.82 which value corresponds to the material with the highest molecular weight

Answers

The compound that has the highest molecular weight based on the chromatogram is the compound with Rf 0.25.

A chromatogram is an output that shows the extent of separation of the components of a mixture. If the Rf is high, then it means that the substance traveled a large distance through the plate and vice versa.

Similarly, the molecular mass of the substances correlate with the Rf value observed for each component. The components with high molecular mass always show a low Rf value.

This implies that the lowest Rf value corresponds to the largest relative molecular mass. Thus, the compound that has the highest molecular weight based on the chromatogram is the compound with Rf 0.25.

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which compound do you expect to have the lowest boiling point?

Answers

Answer:

Ch4 have the lowest boiling point.

given the diagram below which contains a mixture of three acids in an aqueous solution, identify the color of the sphere that represents the anion of the weak acid.

Answers

The acid having the yellow anion is a weak acid.

The weak acid is the acid that does not dissociate completely in solution. Strong acids are known to dissociate completely in solution. Hence, their cations and anions do not occur together in solution.

Weak acids acids do not dissociate in solution hence, we can still spot the cations connected to their anions in solution. Hence, the acid having the yellow anion is a weak acid.

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A drum of a nonflammable, water-insoluble liquid was identified at a fire scene. A sample of the liquid collected from a drum weighs 1.5 lb. and occupies a volume of 0.15 gal. What is the specific gravity of the liquid?

Answers

The specific gravity of the liquid is 1.2

Specific gravity of a substance can be calculated using the formula

[tex]Specific \ gravity = \frac{Density \ of \ substance}{Density \ of \ water}[/tex]

First, we will determine the density of the liquid

Density is given by the formula

[tex]Density = \frac{Mass}{Volume}[/tex]

From the question,

The mass of the liquid = 1.5 lb

The volume occupied by the liquid = 0.15 gal

∴ The density of the liquid is

[tex]Density = \frac{1.5}{0.15}[/tex]

Density of the liquid = 10 lb/gal

(NOTE: Density of water = 8.34 lb/gal)

∴ [tex]Specific \ gravity \ of \ the \ liquid =\frac{10 \ lb/gal}{8.34 \ lb/gal}[/tex]

Specific gravity of the liquid = 1.199

Specific gravity of the liquid1.2

Hence, the specific gravity of the liquid is 1.2

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what is the rule for determining the mass of an atom

Answers

Answer:

For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit. By adding together the number of protons and neutrons and multiplying by 1, you can calculate the mass of the atom.

which of the following represents the electron configuration of s⁻?

Answers

Answer:

[Ne] 3s² 3p⁴

Explanation:

evaporation is a cooling process and condensation is:

Answers

Condensation is the process where water vapor becomes liquid.

When a substance undergoes a chemical change it is no longer the same but a
b_____ n___ s______.

Answers

When a substance undergoes a chemical change it is no longer the same but a brand____ new___ substance_____.

When a substance undergoes A Chemical change, it means that a reaction occurred that altered the the chemical composition and properties of the substance to become a new substance entirely.

Examples of chemical change are

Rusting of iron.

Burning of wood.

The change of sugar to caramel upon heating.

Cooking.

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How many total atoms are represented in the following chemical formula
3N2O5​

Answers

Answer:

21 atoms

Explanation:

HOPE THAT THIS IS HELPFUL.

HAVE A GREAT DAY.

which coommon substance is an acid A. water B. bleach C. Vinegar D. baking soda

Answers

Answer:

C. VINEGAR

Sana maka tulong

Answer:

vinegar

Explanation:

it is acetic acid or CH3COOH

How does the Gelder family decide what to plant

Answers

Answer:

They look at what people want. They plant the same thing every year. They think about what they like to eat.

Explanation:

(brainliest plz)

An exothermic reaction _____ energy.
A. eliminates B. absorbs C. releases D. generates
and please, don't delete your answer ​

Answers

Answer:

C

Explanation:

Exothermic reactions are reactions or processes that release energy, usually in the form of heat or light. In an exothermic reaction, energy is released because the total energy of the products is less than the total energy of the reactants.

This is a device used to measure the heat temperature in the smoking process

Answers

Answer:

The K type thermocouple is used in the test to measure the temperature, especially in the burning chamber..

Two thermometers need to be used during the smoking process. One thermometer measures the air temperature of the smoker. The other thermometer is used to monitor the food product temperature..

Explanation:

Hope it helps you..

J-just correct me if I'm wrong, okay?..(;ŏ﹏ŏ)

B-but..

Y-your welcome in advance!!..

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Find out how many Ml the blank on the scale stand for

Answers

Answer

milliliter

The ml stands for milliliter. The abbreviation ml is typically pronounced M-L (saying the letters out loud) or milliliter. ... For this abbreviation, ml is one thousandth of a liter, so it's a super small measurement.

in which h-atom orbital are you most likely to find the electron farthest from the nucleus?

Answers

The farthest electron from the nucleus is the 4p orbital because it’s the highest electron but the farthest.

The farthest electrons from the nucleus is 4p orbital as it has higher electrons but the present farthest from the nucleus.

What is electronic configuration?

Electronic configuration is defined as the symbolic representation of the manner in which the electrons of its atom are distributed over different atomic nucleus.

Electrons are defined as a negatively charged subatomic particles that together with protons and neutrons from an atom nucleus.

There are basically four orbitals: s orbital, p orbital, d orbital and f orbital. The s orbital has lowest energy and are close to nucleus and d orbital has highest energy and are farthest from the nucleus.

But in case of H atom p orbital has highest energy and are farthest from the nucleus and s orbit has lowest energy and are close to the nucleus.

Thus, the farthest electrons from the nucleus is 4p orbital as it has higher electrons but the present farthest from the nucleus.

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Why are open systems inappropriate for studying the conservation of mass?
O The sample may become contaminated.
O Matter may be created or destroyed within the system.
O Heat can escape from or enter the system.
O Matter may be lost to or gained from the surroundings.

Answers

Open systems are inappropriate for studying the conservation of mass because matter may be lost to or gained from the surroundings.

What is an open system?

An open system is a system that exchanges matter and energy with the surroundings.

What is the law of conservation of mass?

The law of conservation of mass states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time.

Why are open systems inappropriate for studying the conservation of mass?

The sample may become contaminated. FALSE. Even if the sample were not pure, the mass could be conserved.Matter may be created or destroyed within the system. FALSE. Matter is not created nor destroyed.Heat can escape from or enter the system. FALSE. The exchange of heat (energy) does not affect mass conservation.Matter may be lost to or gained from the surroundings. TRUE. If matter is gained or lost, the mass is not conserved.

Open systems are inappropriate for studying the conservation of mass because matter may be lost to or gained from the surroundings.

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Conservation of Mass Unit Test

1. Matter may be lost to or gained from the surroundings.

2. Yes, it supports the claim because the equation is balanced.

3. The bubbling indicates a gas was formed, so some atoms formed gas; therefore, mass was transferred to the atmosphere.

4. one-twelfth the mass of a neutral carbon atom.

5. Mass is conserved because the number of each atom in the reactants equals the number of each atom in the products.

6. 129.59 g/mol.

7. the number of atoms in the reactants.

8. 2Fe2O3

9. 112 g CaO and 88 g CO2

10. 274 g

11. For every 3 moles of carbon dioxide produced, 5 moles of oxygen react.

12. 96

13. 1.776 x 10^22

14. Short answer (don't plagiarize)

15. Short answer (please don't plagiarize)

16. Short answer (pretty please don't plagiarize)

what is dark matter and what is dark energy
what are some comparisons and differences of the two
explanation will get brain!

Answers

Answer:

Dark matter slows down the expansion of the universe, while dark energy speeds it up

Explanation:

18.) What is the reading of the liquid in this
graduated cylinder

Answers

Answer:

24

Explanation:

You read at the bottom of the meniscus or curve and count.

i need help within 30 minutes, if you answer within that time you get 40 points and brainliest

Answers

Answer:

Chemical Properties:

Flammability, reacts with oxygen, neutralizes a base

Physical Properties:

Boiling point , colour, mass, a solid or precipitate forms, density

which correctly lists the three parts of soil that are classified by their particle size?

Answers

Answer:

where is the answers??

Explanation:

topsoil

subsoil

bedrock

Answer:

Sand , Clay , Slit

Explanation:

I just know

4. Which statement correctly explains why hydrogen fluoride dissolves in water?

a. Hydrogen fluoride is nonpolar and water is nonpolar.

b. Hydrogen fluoride is polar and water is nonpolar.

c. Hydrogen fluoride is nonpolar and water is polar.

d. Hydrogen fluoride is polar and water is polar.

Answers

The ANSWER is D

salt In water because it is a simple ion pair Na+1 and Cl-1

Hydrogen Fluoride is similar: H+1 and F-1 and since it is a polar ion pair too it dissolves in water

9. Identify which properties of each of the following elements make them ideal for their uses. KIU A (a) copper and aluminum for pots and pans (b) silver and gold for jewellery (C) argon in double-glazed windows for homes

Answers

Answer:

Each element has its own unique properties. Each contains a different number of protons and neutrons, giving it its own atomic number and mass number. The atomic number of an element is equal to the number of protons that element contains. The mass number is the number of protons plus the number of neutrons of that element. Therefore, it is possible to determine the number of neutrons by subtracting the atomic number from the mass number.

Explanation:

Hope that helps you!

Each element has is own chemical and physical properties which make them unique and ideal for there uses.

What are properties?

Properties are defined as a characteristics of a particular substance that can observed in a chemical reaction.

There are mainly two types of properties

Chemical propertiesPhysical properties

Both the chemical and physical properties are different for each elements and compounds.

Each elements has different number of protons and neutrons that contains its own atomic number and atomic mass

Thus, each element has is own chemical and physical properties which make them unique and ideal for there uses.

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Pls Help, I Will Give Brainlist If You Answer Correct. Pls (2024)
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