Please answer it!! Would appreciate it!

Please Answer It!! Would Appreciate It!

Answers

Answer 1

[tex] \sf \: Answer \: 8 \: :[/tex]

→ During the formation of a chemical bond, heat is released.

[tex] \sf \: Answer \: 9 \: :[/tex]

→ Solution that contains all the solute it can hold at a given temperature is saturated.

[tex] \sf \: Answer \: 10\: :[/tex]

→ No. of neutrons present in Bromine are 44


Related Questions

The Tissues of vascular Plants are organized into more complex structures that carry out a Variety of functions in the plant what structure is formed by a Group of tissues that work together to carry out a Specific function

A) Cell
B) Organ system
C)Organism
D Organ

Answers

Answer:

D Organ

Explanation:

A group of tissues that work together to carry out a specific function is known as organ.

Life is organized into distinct levels. These organization makes it possible for certain cells which are the basic unit of life to carry out their respective function.

A group of cell that performs the same function are organized into tissues. A group of tissues that work together to carryout a specific function are known as organs. A group of organs that perform the same functions forms the organ systems.

As the complexity of an organism increases, so also is their organization of life.

please answer willl give brainlist !!! Name the noble gases. What are the common properties between them?

Answers

Answer: Other characteristics of the noble gases are that they all conduct electricity, fluoresce, are odorless and colorless, and are used in many conditions when a stable element is needed to maintain a safe and constant environment. This chemical series contains helium, neon, argon, krypton, xenon, and radon.

Which option is an example of a chemical property?


boiling point

density

color

ability to react with oxygen​

Answers

Answer:

Boiling point is one of the answers

ability to react with oxygen

What human activity has caused the Increase of CO2 in the atmosphere?

Answers

Burning fossil fuels for energy.

heyy pls help anyone?

Answers

1a. calcium chloride (CaCl2)
b. 2HCl (aq) + Ca(OH)2 (s) —> CaCl2 (aq) + 2H2O (l)

i’m not sure about the rest but i hope this helped ^^

Answer:

i agree

Explanation:

Non examples of chemical change
List some please

Answers

Answer:

Crushing a can.

Melting an ice cube.

Boiling water.

Mixing sand and water.

Breaking a glass.

Dissolving sugar and water.

Shredding paper.

Chopping wood.

Some non-examples of the chemical reaction should be boiling water, glass breaking out, etc.

Chemical reaction

It is a process where one or more substances that we know as reactants should be transformed into one or more distinct substances that we know as products. Here the substances should be treated as the elements of chemicals or the compounds.Chemical reactions are an integral part of technology, culture, and indeed of life itself. Burning fuels, smelting iron, making glass and pottery, brewing beer, and making wine and cheese are among many examples of activities incorporating chemical reactions that have been known and used for thousands of years. Chemical reactions abound in the geology of Earth, in the atmosphere and oceans, and in a vast array of complicated processes that occur in all living systems.

Therefore, Some non-examples of the chemical reaction should be boiling water, glass breaking out, etc.

Learn more about non examples of chemical change

https://brainly.com/question/1737296

#SPJ2

some safety precautions people should take when using fireworks

Answers

Answer:

Do not try to re-light or handle malfunctioning fireworks. Soak both spent and unused fireworks in water for a few hours before discarding.

How many hydrogen atoms are there in the molecule H2SO?
A. 1
B. 3
C. 4
D.2
please help, brainliest to the first person who is correct , i’ll give another 25 points if this is right

Answers

Answer:

D:2

Explanation:

H is hydrogen, and the subscript represents the amount of atoms it has so H2SO is two hydrogens

Answer:

D. 2 I think, not 100% sure.

Consider the reaction.

Upper H subscript 2 upper o (g) plus upper C l subscript 2 upper O (g) double-headed arrow 2 upper H upper C l upper O (g).

At equilibrium, the concentrations of the different species are as follows.

[H2O] = 0.077 M
[Cl2O] = 0.077 M
[HClO] = 0.023 M

What is the equilibrium constant for the reaction at this temperature?
0.089
0.26
3.9
11

Answers

Answer:

The value of Equilibrium constant for the given reaction is 0.089

Explanation:

The given data shows the following reaction

    H2O (g)  + Cl2O (g) ⇄ 2 HClO (g)

The above reaction is in equilibrium.

Equilibrium constant K  = [tex]\frac{[C]^c*[D]^d}{[A]^a*[B]^b}[/tex]

for the reaction

aA+bB ⇆ cC +dD

so

K  = [tex]\frac{[HClO]^2}{[H2O][Cl2O]}[/tex]

    = [tex]\frac{[0.023]^2}{[0.077][0.077]}[/tex] = 23*23/77*77 = 0.089

Therefore the value of Equilibrium constant for the given reaction is 0.089

Answer:

The value of Equilibrium constant for the given reaction is 0.089

What does the chemical formula show?
a) The number of elements in each molecule
b) The number of atoms in each molecule
c) How heavy the molecule is.
d) The elements in the molecule and the number of atoms of each one .​

Answers

Answer:

A

Explanation:

You can eliminate C because you need to consult a periodic table to determine the mass (not the weight).

There are other answers you could use. The wording is awfully sloppy.  D is an example of that. The elements part is true, the atoms part is not really true in all cases.  For example NaCl is table salt and both the elements are ions, not atoms. Na is plus ion and Cl is minus one. B is wrong for the same reason.

I think in the end I would choose A.  I think this is a very sly question. It is not really testing chemistry. It is testing how well you know your definitions.

Which is the IUPAC name for NO?

Answers

Answer:

Nitrogen (ii) oxide

Explanation:

To know the IUPAC name for NO, we shall determine the oxidation number of N in NO.

NOTE: The oxidation number of oxygen (O) is always – 2.

Thus the oxidation number of N in NO can be obtained as follow:

N + O = 0 (ground state)

N + (– 2) = 0

N – 2 = 0

Collect like terms

N = 0 + 2

N = +2

Thus, the oxidation number of Nitrogen (N) in NO is +2.

Therefore, the IUPAC name for NO is Nitrogen (ii) oxide

Answer:

nitrogen monoxide

Explanation:

for those taking quiz on edge

Which formula equation shows a reversible reaction? 2 Upper N a + Upper F Subscript 2 Baseline right arrow 2 Upper N a Upper F. Upper C a Upper C Upper O Subscript 3 Baseline right arrow Upper C a Upper O + Upper C Upper O Subscript 2. Upper N Upper H Subscript 4 Baseline Upper C l (s) double-pointed arrow Upper N Upper H Subscript 3 Baseline (g) + Upper H Upper C l (g). 2 Upper H Subscript 2 Baseline Upper O Subscript 2 Baseline (a q) right arrow with n above it 2 Upper H Subscript 2 Baseline Upper O (l) + Upper O Subscript 2 Baseline (g).

Answers

Answer:

NH₄Cl    ⇄      NH₃   +    HCl

Explanation:

The formula equation shows a reversible reaction is:

NH₄Cl(s) ⇄ NH₃(g) + HCl(g)

Classification of reactions according to their reversibilityReversible reactions: They occur in both senses, as denoted by a double arrow.Irreversible reactions: They occur in one sense, as denoted by a single arrow.

Let's consider which formula equation shows a reversible reaction.

2 Na + F₂ ⇒ 2 NaF

The single arrow indicates that this is an irreversible reaction.

CaCO₃ ⇒ CaO + CO₂

The single arrow indicates that this is an irreversible reaction.

NH₄Cl(s) ⇄ NH₃(g) + HCl(g)

The double arrow indicates that this is a reversible reaction.

2 H₂O₂(aq) ⇒ 2 H₂O(l) + O₂(g)

The single arrow indicates that this is an irreversible reaction.

The formula equation shows a reversible reaction is:

NH₄Cl(s) ⇄ NH₃(g) + HCl(g)

Learn more about reversible reactions here: https://brainly.com/question/11114490

why organic compounds have a slow rate of reaction

Answers

Answer:

first help me plz plz

Explanation:

coz  i hate chemistry

5. Name the compound which contain Strontium, Fluorine, and Oxygen.

Options:

Strontium fluorate

Strontium fluoride

Strontium chlorate

Strontium fluorine

A student wants to make a fair comparison of the reactivity of the metals with hydrochloric acid.
Name two variables that must be kept constant.

Answers

Answer:

the concentration of the reactants

the temperature in heating

The variable that should be kept constant is the concentration of the reactant and the temperature in heating.

What is hydrochloric acid?

Hydrochloric acid (HCl) is called as the muriatic acid represent the colorless corrosive, also the mineral acid should be strong that contains various industrial used also it should be reacted with an organic base it created the hydrochloride salt.

Therefore, we can conclude that The variable that should be kept constant is the concentration of the reactant and the temperature in heating.

Learn more about acid here: https://brainly.com/question/17784856

Which alignment of the Sun, Moon, and Earth causes a lunar eclipse?
A.

B.

C.

D.

Answers

Answer:

A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the Sun, Earth, and Moon are aligned exactly with the Earth in the middle. Hence, a lunar eclipse can only occur the full moon phase

Explanation:

please mark me brainlist

Answer:

A sun

Explanation:

because sun has heat and gives light

Help please. ASAP.
1. Explain how you think changing in the thickness or length of the nail will affect the strength of the electromagnet

Answers

Answer:

I believe- If there is more metal for the magnet to reach for, then the strength will grow but it may be harder to pick up off of a surface depending on the weight of the nail. If it is a light nail, it would be more efficient for a quick result in having the magnet to pick it up

Explanation:

Answer:

Ferromagnetic materials make the magnet stronger than non-ferromagnetic materials like paper, wood, or air. A wider nail will make the magnet stronger. Making the nail longer will not make the magnet stronger, unless you also add more turns to the coil.

Explanation:

I hope this helps!!

what should the charge be for calcium and fluoride ions?

Answers

Calcium ions have a charge of “2+”because they are in group two (column number 2)

Skip over the transition metals

Fluoride ions would have a charge of
“1-” because they are all the way near the end of the table in the second last group (group 7)

Hope that helps :)

If the solid, liquid, and gas forms of a substance
are made up of the same type of particles, How
could a substance change from one state to
another?

Answers

presence of heat can change solid tu liquid

and liquid to gas

HELP!! PLEASE 10+ points!

Can you tell from the masses of the reactants which one of the reactants will be the limiting reactant? Defend your answer (use an equation within your defense).

Answers

Answer:

Explanation:

so, limiting reactants are the reactant which limit the continuing of the reaction or in simple word they are the element that run out first and are totally consumed

equation :

2koh+h2so4⇒ k2so4 +2h2o

if we have 4 mol of h2so4 and 3 mol of 2koh

                 number of produced moles of k2so4 on consuming all :

h2so4 ⇒ k2so4

1 mol          1 mol

4 mol            ?mol

no of mol of k2so4 if all h2so4 is consumed 4 mol

2koh⇒ k2so4

2 mol       1 mol

3 mol         ?mol

no of mol of k2so4 if we consume all koh = 1.5 mol

since the koh produces less mol on consuming it all

the koh is the limiting reactant

A scientist built a computational model to investigate what happens when magma comes into contact with the ground surface. In the model, the ground surface was 293K, whereas the magma was 1,500K. The model examined different depths of the magma away from Earth's surface and toward the core. Over a greater amount of time, more magma cooled. What form of heat transfer accounts for the magma cooling? ​​​​​​​

Answers

Answer:

Conductive heat transfer is most likely responsible for the cooling of the magma

Explanation:

The Earth's core is continuously cooling due to human's digging, allowing for more space and heat escape from the Earth's core. All magma closer to the core would have its heat absorbed by the core, hereby increasing its coolness.

This heat transfer process is common to conduction.

I hope this was helpful.

a. Rub the magnet along the nail or knitting needle. Now try picking up the paper clip or tack. Could your nail pick it up? How many can it pick up at once?

b. Now try to make your magnet stronger by rubbing the magnet along the nail or knitting needle for a longer time. Rub only in one direction, not back and forth. This will increase the number of atoms that line up with the magnet. Try to pick up paper clips or thumbtacks. How many can it pick up now?

Answers

Answer:

ight i'll answer both rq

Explanation:

a. Rub the magnet along the nail or knitting needle. Now try picking up the paper clip or

tack. Could your nail pick it up? How many can it pick up at once?

after rubbing the magnet with the nail, it could pick up 7 small paper clips.

b. Now try to make your magnet stronger by rubbing the magnet along the nail or knitting

needle for a longer time. Rub only in one direction, not back and forth. This will increase

the number of atoms that line up with the magnet. Try to pick up paper clips or

thumbtacks. How many can it pick up now?

after rubbing it a second time but for a longer period, it could pick up around 10, almost lifting the 11th.

Answer:

A. After rubbing the magnet with the nail, it could pick up 7 small paper clips.

B. After rubbing it a second time but for a longer period, it could pick up around 10 small paper clips, almost lifting the 11th one.

Tigers and crocodiles are more closely related than tigers and sharks. Which statement about shared characteristics best supports this statement?

Answers

Answer: Crocodiles and tigers both have four legs

Explanation: Even when sharks and tigers are both meat eaters, the question is about similarities between tigers and crocodiles, so D is out. A is about crocodiles and sharks, so it's out also. B suits for sharks too, so it's out too. C is the most suitable answer, because both animals have four legs, which means that they belong to the group of quadrupede animals.

Answer:

Crocodiles and tigers both have four legs

Explanation:

What is the order of decreasing reactivity of these 4 metals?

Answers

Answer:

Ca, Mg, Zn, Cu

Explanation:

Refer to the Reactivity Series where each metal is more reactive than others.

PLEASE HELPPPP! :{
Leandra is performing an investigation. She places one strawberry by the window in the sunlight and another strawberry inside of the refrigerator. Leandra leaves the strawberries for three weeks and observes them. After the three weeks, what observation did Leandra make?

A. The strawberry in the refrigerator rusted faster because it was exposed to less heat.
B. The strawberry by the window rusted faster because it was exposed to more heat.
C. The strawberry in the refrigerator rotted faster because it was exposed to less heat.
D. The strawberry by the window rotted faster because it was exposed to more heat.

Answers

D or B because if u put a strawberry in heat it’s gonna rot

What is the formula for nitrogen monoxide?
O N203
O NO
O N₂O,
O None of the answers are correct

Answers

The answer is NO.

Mono- means 1, so monoxide would indicate that there is 1 oxygen.

The N is double bonded to the O:

N=O

And has an unpaired set of electrons

How many neutrons are in the nucleus of an atom with a mass number of 80 and an atomic number of 35?

Answers

Answer: 45

Explanation:

mass number = number of protons and neutrons

atomic number = number of protons

to find neutrons subtract atomic number from mass number

so 80 - 35 = 45 neutrons

HURRY FAST. It is known that complex carbohydrates provide more sustained energy over time than simple sugars such as sucrose. Complex carbohydrates are polysaccharides, which are long chains of smaller sugar molecules bonded together. Simple sugars are monosaccharides that contain only one molecule. Why do complex carbohydrates provide more energy over time versus simple carbohydrates? Complex carbohydrates have more chemical bonds to break than simple sugars, which takes longer for the body to digest and provides more units of energy for the body to use. Complex carbohydrates have bonds that contain more thermal energy than those in simple carbohydrates, which is released when they go through the digestive process. Complex carbohydrates provide Calories for the body while simple carbohydrates provide calories. Calories are bigger than calories and provide more energy. Complex carbohydrates take less energy to digest, which means that the body does not spend all of its calories digesting the food. This saves calories for the body to use later.

Answers

Answer:

Complex carbohydrates have more chemical bonds to break than simple sugars, which takes longer for the body to digest and provides more units of energy for the body to use.

Explanation:

Complex carbohydrates contain longer chains of sugar molecules than simple carbohydrates. The body converts these sugar molecules into glucose, which it uses for energy. As complex carbohydrates have longer chains, they take longer to break down and provide more lasting energy in the body than simple carbohydrates.

Answer

The answer is A if you want it simplifited.

from the guy above

Aqueous solutions of sodium carbonate and magnesium chlorate are mixed, what is the precipitate, chemical equation, complete ionic equation, and net ionic equation

Answers

Answer:

Explanation:

Na₂CO₃ (aq)+ MgCl₂ (aq) =  MgCO₃(s)  +2NaCl (aq)

MgCO₃(s) is the precipitate .

Ionic equation

2 Na⁺¹ + CO₃⁻² + Mg⁺² + 2 Cl⁻¹ = MgCO₃(s) +2 Na⁺ + 2 Cl⁻

net ionic equation

Mg⁺² + CO₃⁻² = MgCO₃ (s) .

The precipitate formed in the reaction has been the magnesium carbonate salt.  The net ionic equation will be: [tex]\rm Mg^2^+\;+\;CO_3^2^-\;\rightarrow\;MgCO_3[/tex].

The mixture of sodium carbonate and magnesium chlorate has been given as:

[tex]\rm Na_2CO_3\;+\;MgCl_2\;\rightarrow\;MgCO_3\;+\;NaCl[/tex]

The precipitate formed in the reaction has been the magnesium carbonate salt.

The chemical equation has been written as the equation with the states of the reactants and the products.

[tex]\rm Na_2CO_3\;(aq)\;+\;MgCl_2\;(aq)\;\rightarrow\;MgCO_3\;(s)\;+\;2\;NaCl\;(aq)[/tex]

The ionic equation for the reaction has been:

[tex]\rm Na_2CO_3\;\rightarrow\;2\;Na^+\;+\;CO_3^2^-[/tex]

[tex]\rm MgCl_2\;\rightarrow\;Mg^2^+\;+\;2\;Cl^-[/tex]

[tex]\rm MgCO_3\;\rightarrow\;Mg^2^+\;+\;CO_3^2^-[/tex]

[tex]\rm NaCl\;\rightarrow\;Na^+\;+\;Cl^-[/tex]

The ionic equation for the reaction will be:

[tex]\rm 2\;Na^+\;+\;CO_3^2^-\;+\;Mg^2^+\;+\;2\;Cl^-\;\rightarrow\;MgCO_3\;+\;2\;Na^+\;+\;2\;Cl^-[/tex]

The net ionic equation has been consisted of the products that have been different on both the product and the reactant side. The same ions are eliminated in the net ionic equation. The net ionic equation will be:

[tex]\rm Mg^2^+\;+\;CO_3^2^-\;\rightarrow\;MgCO_3[/tex]

For more information about the net ionic equation, refer to the link:

https://brainly.com/question/22885959

A train station in Tokyo uses tiles that convert people’s footsteps into electricity.

A.Restore
B. Rethink
C. Reduce
D. reuse

Answers

Answer:

reuse

Explanation:

1. Which of the following is not a major classification for elements in the periodic table?
O a. metals
O b. metalloids
O c. nonmetals
O d. noble gases

Answers

Answer:

Noble gases

Explanation:

Noble gases good studying
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