Chemistry High School

Bronsted Lowry reactions can use hydroxide ions.
True
False

Answers

Answer 1

Answer:

f

Explanation:

Related Questions

50g of potassium chloride is dissolved in 500 cm3 of water. Calculate the concentration of the solution. Give your answer in g/dm3

Answers

50g of potassium chloride

The large number before a molecule in a chemical formula is called a _______________.

O subscript
O coefficient
O equation

Answers

the answer is coefficient

Answer:

Subscript

Explanation:

The little number you see to the right of the symbol for an element is called a subscript. That number indicates the number of atoms of that element present in the compound. When balancing an equation, you can change the coefficients but not the subscripts.

hope this helps! if not, it's got to be coefficient or equation

Savvas Realize. Investigation 8 Experiment 1

Answers

Answer:

–1065.25 KJ of energy.

Explanation:

From the question given above, the following data were obtained:

4FeO + O₂ —> 2Fe₂O₃  ΔH = –560.66 kJ

From the balanced equation above,

The formation of 2 moles of Fe₂O₃ released –560.66 kJ of energy.

Finally, we shall determine the amount of heat energy released when 3.8 moles of Fe₂O₃ are produced. This can be obtained as follow:

From the balanced equation above,

The formation of 2 moles of Fe₂O₃ released –560.66 kJ of energy.

Therefore, the formation of 3.8 moles of Fe₂O₃ will release

= (3.8 × –560.66)/2 = –1065.25 KJ of energy.

Thus, –1065.25 KJ of energy is released from the reaction.

Are viruses alive. What makes something alive?



Statement: No cell membrane or other organelles.

Statement: Most viruses do not have the fools to copy their own DNA

Statement: Outside of a host cell viruses do not use energy.

Statement: viruses don't appear to have active processes that respond to the environment

what​

Answers

The correct answer is the last question

What change releases energy.

Answers

Answer:

When a substance changes states, it requires energy when it goes to a higher energy state and releases energy when it goes to a lower energy state. Gas has a higher energy than liquid and liquid has a higher energy than solid. The three state changes from a lower energy to a higher energy are: solid to liquid: fusion. liquid to gas: vaporization

which situation best represents convection

Answers

Answer:

A hot air balloon taking off

Explanation:

help please see attached file

Answers

Answer:

balanced equation of glucose

6CO2 + 6H2O----------C6H12O6 + 6O2

in the presence of sun light.

What does a wave carry
A.Energy B.Matter C.Molecule D.Particle​

Answers

Answer:

Energy

Explanation:

As waves move from one place to another, they carry energy. Generally, the medium itself doesn't move much as it is the disturbance that is being transmitted

Answer:

energy because a wave isnt like a physical thing so it isnt gonna have matter or particles or molecules its just a movement of energy like a sound wave has no matter so it doesnt have particles and stuff

Explanation:

i know i sound very scientific XD

Which of these do NOT show malleability a) Iron
b) Sulfur
c) Copper
d) Aluminum​

Answers

Answer:Sulfur

Hope this helps!

Explanation:

Answer Is B) Sulfer !

Which one of the following compounds is insoluble in water?

a) Na2CO3

b) K2SO4

c) Fe(NO3)3

d) ZnS

Answers

Answer: a Na2CO3! I’m really good in this type of stuff xoxo

Answer:

The answer is Na2CO3.Option a

If you have 730 moles of a gas at 304 Kelvin in a 4.50 Liter container what
is the pressure of that eas in atmospheres?

Answers

Answer:

4046atm

Explanation:

For this question you can use the ideal gas law,

[tex]PV=nRT[/tex]

Where P is pressure, V is volume, n is moles of substance, R is the constant, and T is the temperature.

Because of the units given, R will equal .08026[tex]P=4046 atm[/tex]

Rearrange the equation to solve for pressure:

[tex]P=\frac{nRT}{V}[/tex]

Then, plug in the values (I'll be excluding units for simplicity, but they all cancel out for pressure in atm):

[tex]P=\frac{(730)(.08206)(304)}{4.5}[/tex]

This will give you:

[tex]P=4046atm[/tex]

4. Explain how radioactive isotopes are used to detect health problems.

Answers

Radioisotopes are widely used to diagnose disease and as effective treatment tools. For diagnosis, the isotope is administered and then located in the body using a scanner of some sort.

Mark brainly if answered correctly

Answers

ROW - ( 3 ) is correct

SYSTEM (A)

Respiratory system - here gaseous exchange takes place.

SYSTEM (B)

Digestive system - here nutrients from food is absorbed and assimilated .

SYSTEM (C)

Excretory system - removal of waste occurs

is Radon an elementary substance or a compound?

Answers

Answer:elementary substance

Explanation:

If greenhouse gases in the atmosphere act like a blanket around the Earth, how is this "blanket" being changed by human activities?

Answers

The gases we create are adding to that blanket making sun light harder to escape,so the world heats up due to this addition to the layer

Answer:

c on edg

Explanation:

i dont know for sure so sorry if i am wrong.

and have a good day <3

Which answer choice describes all nonmetals? A. All of the elements of Period 2 in green boxes B. Hydrogen and all of the other elements in orange boxes C. All of the elements of Group 18 in orange boxes D. Hydrogen and all of the elements in blue boxes

Answers

Hello,

An answer is the group of reactive nonmetals and Noble gases.

I am not sure what the colored boxes mean, referring to my periodic table. However, the nonmetals are Hydrogen, Carbon, Nitrogen, etc., including the Noble gases.

Green and purple below, then hydrogen of course.

4. The volume of a gas is 2.5 L when the pressure is at standard pressure (101.325 kPa). What is the
volume of the gas if the pressure decreases to 85 kPa and the temperature of the gas if the pressure is constant?

Answers

Answer:

18.32L

Explanation:

sana makatulong

Which statement is correct?
A. Physical changes produce new substances; chemical changes do not.
B. Chemical changes produce new substances; physical changes do not.
C. Both physical changes and chemical changes produce new substances.
D. Neither physical changes nor chemical changes produce new substances.

Answers

Answer:

B. Chemical changes produce new substances; physical changes do not.

Explanation:

Physical changes only alter appearances, while chemical changes are interactions that create new chemical formulas.

What is the charge of the atom in the diagram below?

A. -3
B. +1
C. 0
D.+3

Answers

Answer:

D. +3

Explanation:

have a wonderful day!!

What is one way that the kidneys help maintain homeostasis in the body?
A They regulate the temperature of the body
B They regulate the distribution of energy in the body
C They regulate the amount of oxygen in the body
D They regulate the amount of water in the body

Answers

Answer:

they regulate the amount of water in the body.

Explanation:

The kidneys help maintain homeostasis by regulating the concentration and volume of body fluids. For example, the amount of H+ and HCO3 - secreted by the kidneys controls the body's pH.

Density can be dasdied as a
A physical property of matter
B. chemical property of matter
C. physical change
D. chemical change

Answers

Answer:

A

Explanation:

physical property of matter

- no chemical reaction involved

- involves the measurements of mass and density

What does the nucleus of the cell control?

Answers

Answer:

Image result for What does the nucleus of the cell control?

The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.

Explanation:

Answer:

Life functions

Explanation:

hope this helps <3

Which component of the universe contains all of the other components listed below and would have the
greatest mass?

Answers

Answer:
The answer is galaxy

The galaxy is the component of the universe which  contains all of the other components and would have the greatest mass.

What is a galaxy?

A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity.The word is derived from the Greek galaxias , literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less than a hundred million stars, to the largest galaxies known – supergiants with one hundred trillion stars,each orbiting its galaxy's center of mass.

Most of the mass in a typical galaxy is in the form of dark matter, with only a few percent of that mass visible in the form of stars and nebulae. Supermassive black holes are a common feature at the centres of galaxies.

Learn more about galaxy,here:

https://brainly.com/question/8628958

#SPJ6

A mixture of four gases exerts a total pressure of 960
mm Hg. Gase A each exert 120 mm Hg. Gas B exerts
50 mm Hg. What pressure is exerted by gas C?

Answers

Omitted question:I think you mean Gas A and D each exert 120 mm Hg, if Gas D has a different value , just lug it into he equation as shown below and solve.

Answer:Gas C= 670mmHg

Explanation:

According to Dalton law of partial pressure

The total pressure of a mixture of gases is the sum of the pressures of each gas and can be illustrated as

Pressure total=P1+P2+… +Pn.

Total Pressure = Gas A + Gas B + Gas C + Gas D + Gas...

Now we have

Total Pressure = 120 mm Hg + 50mm Hg + Gas C + 120 mm Hg

960mmHg = 120 mm Hg + 50mm Hg + Gas C + 120 mm Hg

960mmHg =290mmHg +Gas C

Gas C =960mmHg -290mmHg

Gas C= 670mmHg

Find the final product for: Li + Br and show work.

Answers

Lithium is atomic number 3, so it has valency 1

While, Bromine is atomic number 35, and has valency 1

Lithium has an extra electron while Bromine need an electron, since they both need and have one electron, the form

LiBr (Lithium Bromide) where Li is +ve charged and Br is -ve charged

Happy to help :)

When liquid H2O is chemically separated in a scientific investigation it forms H2 gas and O2 gas. If the number of hydrogen and oxygen molecules does not change through the equation, then the mass will
Select one:
decrease from reactants to products.

stay the same from reactants to products.

increase from products to reactants.

increase from reactants to products.

Answers

stay the same. this is the law of conservation

Which statement best describes the relationship between temperature and
solubility of carbon dioxide in the ocean? When Earth's ocean temperature is
higher *
a. less carbon dioxide can be dissolved in the ocean.
b. more carbon dioxide can be dissolved in the ocean.
c. there is no effect on the amount of carbon dioxide that can dissolve.

Answers

Answer:

less carbon dioxide can be dissolved in the ocean.

Explanation:

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

Answers

this is an example of displacement reaction
NaCl + AgF-NaF + AgCI

Your opinion on chocolate

What is your opinion on chocolate, any kind like white chocolate dark, etc. also what do you think is the bad side of chocolate?

Answers

Answer:

Milk Chocolate

Explanation:

Some chocolates contain lots of sugar, but for Dark chocolate its healthy

Answer:

Milk chocolate the bad side of chocolate is getting fat

Explanation:

have u ever tried shreks snickers before?

Determine the representative particles of
0.075 mol Ti
2.10 mol CO2​

Answers

Answer:

0.o75 mol Ti = 4.5x10∧22

2.10 mol CO2 = 1.26x10∧24 molecules

               hope this helped

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