Chemistry High School

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Pls pls pls
I need the discussion Too!!!!

I NEED HELPPPPPPPPPPPPPPPPPPPPLSSSSSSSSPls Pls Pls I Need The Discussion Too!!!!

Answers

Answer 1

Explanation:

2 hydrogen into helium

1.D

3.A

Related Questions

A picture of a patient’s lung showed it to be shriveled and darker than usual.

Which is most likely the cause of this lung condition?

A. smoking
B. overeating
C. sickle cell anemia
D. poor refrigeration

Answers

Answer:

Smoking

Explanation:

It has been proven time and time again to ruin lungs, effectively shortenning ones lifespan.

Explanation:

Smoking, because smoking causes these types of symptoms in long time smokers and people who start to smoke. also I know the answer cause my dad's a nurse.

The average the temperature of the planets

Answers

Answer: Mercury - 800°F (430°C) during the day, -290°F (-180°C) at night. Venus - 880°F (471°C) Earth - 61°F (16°C) Mars - minus 20°F (-28°C)

Explanation: hope this helps!

15.
CzH60
+
O2
Chemical equation:
Type of reaction:
I

Answers

Answer:

C2H6O + 3 O2 = 2 CO2 + 3 H2O

Type of reaction: combustion

Tin+Chlorine -> Chlorine -> Tin(IV) chloride

Answers

Answer:

what's the question?

Explanation:

Which weather component describes how fast the wind is moving?

Wind direction

Wind pressure

Wind speed

Wind vane

Answers

wind speed because speed is how fast something moves
Wind speed is the answer

How many Liters of I2 are produced when 241.6 grams of KI are reacted with excess CuBr2?

Answers

Answer:

8.15 L I2

Explanation:

So, I have the balanced equation of:  2CuBr2 +4KI  →  2CuI   +   4KBr   + I2

Now, we do:  

241.6g  /  1 mol KI  /  1 mol I2  /  22.4 L

---------------------------------------------------------  =   8.15 L I2

           /  166g KI  /   4 mol KI  /   1 mol I2

Hope this helps! ^u^

A scientist is studying a liquid. If she lowers the temperature of the liquid,
which of the following will most likely occur? *PLEASE HELPPPPPPPPP*

The liquid will boil
The liquid will melt
The liquid will freeze
The liquid will evaporate

Answers

The liquid would evaporate

in what kind of reaction do two or more substances combine

Answers

Answer:

The answer is synthesis reaction

Explanation:

Also known as a composition reaction, a synthesis reaction is a reaction in which two or more substances combine to form a new compound.

I copied and pasted the explanation part. But I hope the information is still helpful :)

Select the answer choice that is arranged from smallest to largest.

Answers

Answer:

Im like 75% sure that the answer is C.

Explanation:

Hope this helps! Have a great day. Remember your amazing and you got this! Alycia <3

ya i think C?????????????

What types of energy are involved in a chemical reaction?
Is the energy required for a chemical reaction to take place, and
Is the energy associated with
every substance.

Answers

Activation Energy

The types of energy that are involved in a chemical reaction are : (A) Activation Energy and (B) Chemical Energy. - The energy required for a chemical reaction to take place is known as the activation energy. - If the energy is less than the activation energy, the reaction will not take place.

A hot air balloon rises because the fire warms up the air and the air circulates to fill the balloon and lift it at the same time. What type of heat transfer is this?

A.Conduction
B.Convection
C.Radiation
D.Absorption
PS: Please Hurry ! Thank You !

Answers

Answer:

B.

Explanation:

Convection is the transfer of heat energy, I'm REALLY sure. Please tell me if its wrong in the comments!

Which is an example of a double
replacement reaction?
2Na+ Cl2 + 2NaCl
H2SO3 → H20 + S02
2K + 2H20 – 2KOH + H2
NaCl + AgF-NaF + AgCI

Answers

Answer:

NaCl + AgF → NaF + AgCl

Explanation:

A double replacement reaction is a type of chemical reaction that occurs when two reactants exchange cations or anions to yield two new products.

From all the reactions given ,

2Na + Cl₂ → 2NaCl is an example of combination reaction because two or more reactants (Na & Cl₂) react with each other to form a single product (NaCl)H₂SO₃ → H₂O + SO₂ is an example of decomposition reaction because a single reactant (H₂SO₃) breaks down into two or more products (H₂O & SO₂).2K + 2H₂O → 2KOH + H₂ is an example of displacement reaction because a highly reactive element (K) displaces a least reactive element (H) from its compound (H₂O).NaCl + AgF → NaF + AgCl is an example of double replacement reaction because there's an exchange between Cations ([tex]Na^+[/tex] & [tex]Ag^{+}[/tex]) and Anions ([tex]Cl^-[/tex] & [tex]F^-[/tex]).

Question 10 How many oxygen atoms are in the chemical formula Al(PO4)3? O 1 O 12 O 3​

Answers

13 atoms are in the chemical formula AI(PO4)3
hope that helps :-)
12 oxygen atoms in this question

Look at the following equation.
Au O3 → _Au +_02
In order to follow the law of conservation of mass, this equation must have which set of coefficients, in order from left to right?

Answers

Answer:

Explanation: possible oxidation numbers of Au are +I and +III

Au2O3 ⇒ 2 Au + 3 O2

5. (03.02 LC)
What is the charge on an atom after it gains an electron during the formation of a bond? (5 points)
One positive charge
Two positive charges
Two negative charges
One negative charge

Answers

one negative charge because electrons have a negative charge

How do I convert this equation to a skeleton equation?
Methane gas + oxygen gas carbon dioxide + water

Answers

Answer:

2CH4 + 4O2 => 2CO2 + 4H2O

Explanation:

Mark brainly if it's helpful

What is the frequency of a wave with a velocity of 100 m/s and a wavelength
of 20 m?
A. 5 Hz
O B. 120 Hz
C. 2000 Hz
O D. 0.2 Hz

Answers

Answer:

Frequency = Velocity / Wavelength = 100 m/s / 20 m = 5 s-1 or 5 Hz.

Explanation:

The frequency of a wave with a velocity of 100 m/s and a wavelength of 20m is 5 Hz.

So, option A is correct one.

What is frequency?The number of waves that pass per unit time is called frequency.Formula: [tex]v = c/lamda[/tex]

v = Frequency of wave

c = Velocity

lamda = wavelength of wave

Calculation,

Let velocity = 100 m/s

wavelength = 20m is 5 Hz.

Then, Formula: [tex]v = c/lamda[/tex]

[tex]v[/tex] =  100 m/s / 20m = 5 [tex]s^{-1}[/tex] = 5 Hz ( 1 [tex]s^{-1}[/tex]  = Hz )

So, frequency of wave is 5 Hz

Learn about frequency,

https://brainly.com/question/14316711

#SPJ2

nine families in orgo land 1)Halides:
(2) Alcohols:
(3) Ethers:
(4) Aldehydes:
(5) Ketones:
(6) Organic Acids: (aka - carboxylic acid)
(7) Ester:
Amines:
(9) Amides:

Answers

do it is d /2 okay brain

If a concentration had X number of compounds and its concentration was 7 mol/L, if
we wanted "2X" number of compounds what would the concentration be?
3.5 mol/L
2 mol/L
7 mol/L
14 mol/L

Answers

Answer:I think the answer would be 2 mol/L

What is the mass of MgO required to make 800 mL of a 1.5M solution?
A) 1.2 g

B) 48.72 g

C) 0.03 g

D) 60.47 g

Answers

Answer:

B 48.72 g

Explanation:

i hope this helps

Which describes the difference between frogs and bacteria?

Answers

Answer:the first one

Explanation:Bacteria living on the skin of frogs could save them from a deadly virus, ... With Differences in the Composition of the Skin Microbiome of a Wild

Answer:the last one

Explanation:it not that hard

Can SOMEONE PLEASE HELP!!!!!!!

Answers

It should be a b and c

The Moon's gravity is ONE SIXTH of the Earth's gravity. If you weigh 60
Newtons on the Earth, what would you weigh on the Moon?
6 Newtons
60 Newtons
10 Newtons
360 Newtons

Answers

Answer: 10 Newtons

Reason: 60* 1/6 = 10 Newton’s
10 newtons, you can use F=mg of the Earth to find how much you weigh (6kg) and you can multiply it by the gravity on the moon (1/6 of earth = 1.6)

Hope this helps!!

1
What is the definition of chemical change?
A any change that results in the formation of new chemical substances.
B changing clothes
matter cannot be created or destroyed, only change form
D changes affecting the form of a chemical substance, but not its chemical composition

Answers

Answer:

A. any change that results in the formation of new chemical substances.

A student is wearing a ring made out of pure copper. If the student accidentally dropped the ring into a beaker of solution, which solution(s) would react with the ring?

Answers

I might be wrong but the answer’s D.

write bohrs atomic theory postulate​

Answers

Answer:

Hey mate....

Explanation:

This is ur answer....

1) All matter is made of atoms. Atoms are indivisible and indestructible. 3) Compounds are formed by a combination of two or more different kinds of atoms. 4) A chemical reaction is a rearrangement of atoms.

Hope it helps you,

Mark me brainliest plz....

Follow me!

The electromagnetic spectrum includes the complete range of electromagnetic waves placed in order of:

A.) Increasing amplitude
B.) Increasing frequency
C.) Increasing wave length

Answers

Answer:

c

Explanation:

incresing wave length

why do you think the pressure changed as it did when the temperature was increased?

Answers

Answer:

La Convención Marco de las Naciones Unidas sobre el Cambio Climático (CMNUCC) en su Artículo 1, lo define como ‘un cambio de clima atribuido directa o indirectamente a la actividad humana que altera la composición de la atmósfera mundial y que se suma a la variabilidad natural del clima observada durante períodos de tiempo comparables’. La CMNUCC distingue entre ‘cambio climático’ atribuido a actividades humanas que alteran la composición atmosférica y ‘variabilidad climática’ atribuida a causas naturales.

Los científicos han encontrado evidencias de que el clima en el planeta está cambiando a un ritmo más acelerado de lo esperado y que nuestras actividades ligadas a la producción, extracción, asentamiento y consumo, son la principal causa de este aceleramiento en el cambio.

El mayor problema de un cambio acelerado en el clima es que nuestras sociedades no están preparadas para asumir los cambios que esto nos pueda traer: derretimiento de las masas glaciares y nevados que abastecen acueductos, cambios en los ciclos de floración y fructificación de las plantas de cultivo, ascensos en el nivel de los mares donde hay mucha población viviendo, mayor ocurrencia y fuerza en lluvias, sequías, huracanes, heladas y granizadas en áreas urbanas y rurales, entre otros fenómenos que sin duda reducen nuestra calidad de vida.

Explanation:

espero te áyude

A chemistry student experiments on producing table salt by reacting pure sodium cubes with confined chlorine gas. If the procedure is successful, how much salt is produced with 160 g of chlorine gas used? *
with solution pls

Answers

Answer: 263 grams of salt is produced.

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]    

[tex]\text{Moles of} Cl_2=\frac{160g}{71g/mol}=2.25moles[/tex]

The balanced chemical reaction is:

[tex]2Na(s)+Cl_2(g)\rightarrow 2NaCl(s)[/tex]  

According to stoichiometry :

1 mole of [tex]Cl_2[/tex] produce = 2 moles of [tex]NaCl[/tex]

Thus 2.25 moles of [tex]Cl_2[/tex] will produce =[tex]\frac{2}{1}\times 2.25=4.50moles[/tex]  of [tex]NaCl[/tex]

Mass of [tex]NaCl=moles\times {\text {Molar mass}}=4.50moles\times 58.5g/mol=263g[/tex]

Thus 263 grams of salt is produced.

Will an atom gain or lose an electron? CER

Answers

Ions are formed when atoms lose or gain electrons in order to fulfill the octet rule and have full outer valence electron shells. When they lose electrons, they become positively charged and are named cations. When they gain electrons, they are negatively charged and are named anions.
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