Can someone pls give me the answer to this?

Can Someone Pls Give Me The Answer To This?

Answers

Answer 1

Answer:

2

Explanation:

Answer 2

Answer:

option 2

Explanation:

because its progressing! hope this helps :)


Related Questions

I really need help with this chemistry assignment multiple choice

Answers

Answer:

b option to is correct and answer bro

Are atoms of gold the same as antoms of oxygen? yes or no?​

Answers

Answer:

No they are not the same the are both di

The cells of a tomato contain mostly an aqueous solution of sugar and other substances. If a typical tomato freezes at -2.5 °C, what is the molality of the sugar in solution? (Hint: sugar is a covalent compound, it does not dissociate in water)

Answers

Answer:

1.35 m

Explanation:

We can solve this problem by using the freezing point depression formula:

ΔT = Kf * m * i

Where:

ΔT is the temperature difference between the freezing point of the pure solvent (water) and the solution. In this case it is (0 °C - -2.5 °C = 2.5 °C).Kf is the cryoscopic constant, for water it is 1.853  °C*kg/mol.m is the molality.i is the van't Hoff factor, as sugar does not dissociate in water, it has a value of 1.

We input the data:

2.5 °C = 1.853 °C*kg/mol * m * 1

And solve for m:

m = 1.35 m

Which of the following is a way to decrease the pressure of a gas?
A. Increase the number of molecules
B. Increase the volume
C. Decrease the volume

Answers

Answer:

b

Explanation:

because pressure is inversely proportional to volume.

Also with a larger volume the gas particles will collide less on each other and the walls of the container

A way to decrease the pressure of a gas is to decrease the volume.

What are ways to increase the pressure of a gas?

Three Ways to Increase the Pressure of a Gas

Increase the amount of gas.Increase the temperature of the gas.Decrease the volume of the gas.What are the 3 factors that affect gas pressure?

Temperature, pressure, volume, and the amount of a gas influence its pressure.

Learn more about gas laws here https://brainly.com/question/25290815

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a force of attraction between objects that is due to their masses and distance between objects
a. gravity
b. weight
c. mass

Answers

Answer:

the answer is gravity

hope this helps

Thallium-207 has a half-life of 4.77 minutes. If an initial sample weighed 155 grams, and
now only weighs 2.42 grams, how many half-lives have occurred?
A.4
B.6
C.5
D.3

Answers

Answer:

6

Explanation:

You divide the initial sample weight (155) by 2 until you get to 2.42.

If an organism ingests 950.0 g of glucose (C6H12O6) in its lifetime, how many grams of carbon dioxide (CO2) will be released? (molar mass C6H12O6 = 180.156 g/mol) (molar mass CO2 = 44.009 g/mol)

Answers

Answer:

1392. g CO2

Explanation:

Power gathered from the sun and wind
A
is considered a nonrenewable resource.
B
can provide humans with energy forever.
с
can only be used in the daytime.
D
is not a natural resource.

Answers

Answer: B. Can provide humans with energy forever

Explanation:  The warm air rises and cooler air rushes in to take its place. The moving air is wind. As long as the sun shines, there will be winds on the Earth. We will never run out of wind energy.

Correct answer is b

Can provide humans with energy forever

Name two metals which will not liberate hydrogen from
dilute tetraoxosulphate(vi) acid.​

Answers

Copper (Cu) and silver (Ag) would not liberate hydrogen because they are less reactive than hydrogen since their standard reduction potential is higher.

To solve such this we must know the concept of double displacement reaction. Therefore, copper (Cu) and silver (Ag) would not liberate hydrogen from dilute tetraoxosulphate(vi) acid.

What is chemical reaction?

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

Copper (Cu) and silver (Ag) would not liberate hydrogen because they are less reactive than hydrogen since their standard reduction potential is higher.

Therefore, copper (Cu) and silver (Ag) would not liberate hydrogen from

dilute tetraoxosulphate(vi) acid.

Learn more about the chemical reactions, here:

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What is a group of words called that contains elther a subject or a verb, but not both?

Answers

Answer:

Phrase

Explanation:

Phrases don't have both, but clauses do.

When precipitation falls in summer, sometimes wind pushes it back up into freezing temperatures before falling again. What will most likely occur when this happens?

A.
hail will fall

B.
rain will fall

C.
sleet will fall

D.
snow will fall.

Answers

Answer:

A

Explanation:

hail will fall push it back up making it bigger comes back down

Substances formed as a result of a chemical reaction are calledImmersive Reader (1 Point) products reactants catalysts precipitates

Answers

Answer: substances formed as a result of chemical reaction are called PRODUCTS.

Explanation:

A chemical reaction can be defined as a reaction in which substances known as the REACTANTS makes or breaks it's bonds to form another substance usually referred to as the PRODUCT. Usually, a new substance which is referred to as the product that is formed is different from the original reacting substances. Some of the characteristics of a chemical reaction include:

--> colour change,

--> heat production,

--> precipitation

The rate at which these chemical reaction occurs depends on some factors such as pressure, temperature and concentration of the reactants

There are different examples of chemical reaction which includes:

--> Rusting of iron: this occurs when iron and oxygen combines to form a mixture of iron oxides, which is the product of the chemical reaction.

--> The burning of magnesium in air: in this Chemical reaction, magnesium reacts with oxygen to form magnesium oxide which is the product of the chemical reaction.

2Mg(s) + O2(g) △→ 2MgO(s)

--> Production of table salt: this is formed from the reaction of sodium and chloride to give sodium chloride as the product of the chemical reaction.

Therefore in a chemical reaction, no atom is destroyed or created but a new PRODUCT is formed from reactants.

WORTH 20 POINTS!! Need answer ASAP

Answers

Answer:

i cant see the image im good at chem if you can write it down in the comments ill answer it

Explanation:

molecules can be dissolved? Why?

Answers

Answer:

Dissolving is when the solute breaks up from a larger crystal of molecules into much smaller groups or individual molecules. This break up is caused by coming into contact with the solvent. In the case of salt water, the water molecules break off salt molecules from the larger crystal lattice.

Explanation:

Answer:

Gases can dissolve in water. The dissolving of a gas in water depends on the interaction between the molecules of the gas and the water molecules. The amount of gas that can be dissolved in water depends on the temperature of the water. More gas can dissolve in cold water than in hot water.

Explanation:

Please help thank you

Answers

Answer:

The answer is the 2nd one down: The green house affect

A student puts his signature with graphite pencil.
If the mass of carbon in the signature is 10-12g, calculate
the number of carbon atoms in the signature.​

Answers

Answer:

If the mass of carbon in the signature is 10-12g, calculate. the number of carbon atoms in the signature. the answer is 5.01 x 10^10 atom.

Explanation:

wlcm

please mark me as brainliest

A 72.4 mL solution of Cu(OH) is neutralized by 47.8 mL of a 0.56 M H2(C204) solution. What is the concentration of the Cu(OH)?​

Answers

Answer: The concentration of [tex]Cu(OH)_{2}[/tex] is  0.369 M.

Explanation:

Given: [tex]V_{1}[/tex] = 72.4 mL,     [tex]M_{1}[/tex] = ?

[tex]V_{2}[/tex] = 47.8 mL,       [tex]M_{2}[/tex] = 0.56 M

Formula used to calculate the concentration of [tex]Cu(OH)_{2}[/tex] is as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]

Substitute the values into above formula as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}\\M_{1} \times 72.4 mL = 0.56 M \times 47.8 mL\\M_{1} = \frac{0.56 M \times 47.8 mL}{72.4 mL}\\= 0.369 M[/tex]

Thus, we can conclude that the concentration of [tex]Cu(OH)_{2}[/tex] is  0.369 M.

An alkene with molecular formula C4H8 reacts with bromine to form a compound with molecular formula C4H8Br2 What is the name of this type of reaction?

Answers

It is called a synthesis reaction
Brainliest plz?

It is a type of of addition combination chemical  reaction where in bromine adds across the double bonds of butane whose chemical equation is C₄H₈ +Br₂[tex]\rightarrow[/tex]C₄H₈Br₂.

What is chemical equation?

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

Learn more about chemical equation,here:

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Help please!!!!!!!!!! Both questions!!!!

Answers

on the first one it’s diffusion.

on the second on its false.

PLEASE HELP!!!!!

whoever gets right gets brainly

In which organ would you expect food to be more ground up in? The crop or the gizzard? Why?

Which internal reproductive structure is the "male" structure (makes and sends out sperm)?

for science

Answers

Answer:

In which organ would you expect the contents of food to be more ground up? (Gizzard)

These external structures are the penis, scrotum, epididymis, and testes. The internal organs of the male reproductive system are called accessory organs. ... To discharge sperm within the female reproductive tract.

A 2.2 M solution is made by with 0.45 moles of a solute. What is the final volume of this solution?

Answers

Answer: The final volume of this solution is 0.204 L.

Explanation:

Given: Molarity of solution = 2.2 M

Moles of solute = 0.45 mol

Molarity is the number of moles of solute present divided by volume in liters.

[tex]Molarity = \frac{no. of moles}{Volume (in L)}[/tex]

Substitute the values into above formula as follows.

[tex]Molarity = \frac{no. of moles}{Volume (in L)}\\2.2 M = \frac{0.45}{Volume}\\Volume = 0.204 L[/tex]

Thus, we can conclude that the final volume of this solution is 0.204 L.

PLEASE HELP!!!!!!!!!!

what is the mole fraction of MgCl2 in a solution created by dissolving 132.1 g of MgCl2 into 9.72 mol of water?

1 - 0.125
2- 12.5
3- 2.50
4- 0.225

Answers

i believe the answer is 3

this is actually science but anyways my teacher didn't explain much can someone help?

Answers

TT homo
Tt hetero
tt homo


If I dilute 213 mL of 9.22 M H2SO4 to 390 ml, what would be the concentration (molarity) of the new solution?(round your answer to the hundredths
place)
HELLOPPPPP PLEASEEE ):

Answers

Answer:

5.0 moles

Explanation:

213/390 x 9.22 = 5.04

Round to least sig fig (390 ml)

5.0

How many grams are in a sample of NH₃ that contains 0.5 mol

Answers

Answer:

8.51526 I did it on an online calculator!

Explanation:

Answer:

8.51526 grams

Explanation:

0.5 moles NH3 converted is 8.51526

How much concentrated 15.54 M sulfuric acid is need to prepare 6.1 mL of a 2.28 M solution?

Answers

Answer:

0.895 mL

Explanation:

Using the formula;

C1V1 = C2V2

Where;

C1 = initial concentration (M)

C2 = final concentration (M)

V1 = initial volume (mL)

V2 = final volume (mL)

According to the information provided in this question;

C1 = 15.54M

V1 = ?

C2 = 2.28M

V2 = 6.1 mL

Using C1V1 = C2V2

V1 = C2V2 ÷ C1

V1 = (2.28 × 6.1) ÷ 15.54

V1 = 13.908 ÷ 15.54

V1 = 0.895 mL

PLEASE ANSWER IF YOU KNOW
Which biome has an average winter temperature of -26 degrees Celsius, gets 12-20 inches of rain per year, and has grazing caribou?

Answers

Answer:

The tundra!

Explanation:

It is the only biome that has an average winter temperature of -26 degrees Celsius, gets 12-20 inches of rain per year, and has grazing caribou!

Hope this helps!

Mg (s) + 2 HCl (aq) --> MgCl2 (aq) + H2 (g)

Use the balanced chemical equation above to determine the number of moles of hydrogen gas that would be produced if 3.50 moles of solid magnesium reacted. please show all work and record your answer with proper units and significant figures.
Pls help

Answers

Answer:

2Mg + 4HCl (aq) --> 2 MgCl2 (aq) + H2

Explanation:

balanced...

what is the molarity of a solution containing 9.0 moles of solute in 2500 ml of a solution​

Answers

M=(mols/L) so M=(9.0/2.5) which is 3.6M

Below is a chemical equation. Which of the following are identified by the blue arrows?

Captionless Image
atomic numbers
coefficients
products
subscripts

Answers

it’s the subscripts. I know this for sure
Other Questions
Mg (s) + 2 HCl (aq) --> MgCl2 (aq) + H2 (g) Use the equation above to determine the number of grams of magnesium chloride, MgCl2 , that can be produced if 4.00 moles of HCl (hydrochloric acid) react. please show all work and record your answer with proper units and significant figures.Pls help PLEASE HELP WITH THIS ILL GIVE BRAINLIEST helpppppppppppppppppppppppppp PLZ HELP RN ASAP THX Miss Torres is mailing a package that way it's 12.5 pounds the post office charges by the ounce to mail a package how much does the package weight in ounces Debbie did a survey of how many states the members of her class had visited. Theresults were: 10, 15, 23, 2, 21, 31, 14, 10, 8, 17, 11, 19, 8, 42, 15, 22, 6, 34, 19,3, 24.What is the five-number summary for this set of data?NO LINKS NEED DONE ASAP!! Solve. Show your stepsA.3x2 + 4 = 52B.x2 - 121 = 0C.(b + 4)2 = 49 wanna ft lend me your g mail and we can what is the second and third law of newton? asap Which point represents the quotient of 4+3i/-i What kinds of information can be used as effective support for your claimmm? Evaluate[tex]10^{6}[/tex] 10^{3}121^{1} What is the relationship between the location of precipitation and the location of water users in California? Question + Diagram in picturewill give brainliest to correct answer Please help!! Write a recursive rule can someone please solve this for me? (steps included) Choosing to play basketball with friends instead of smoking a cigarettewhen experiencing a nicotine craving is an example of ?nicotine replacementstimulan controlresponse substitutiontime management contrast your Reflection from the back of a shiny spoon and from a plane mirror. One dice and one coin are tossed. What is probability that you will see HEAD on coin and dice will show a numbermore than 4. Answer should be in reduced fraction format. Descriptions- Form into complete sentences by conjugating etre and making the adjective agree.Madame Laval (prof/intelligent)Monsieur et Madame Lambert (voisins/gentil)Eric et Olivier (copains/sympathique)Vronique et Nathalie (copines/ amusant)Pauline (fille/mignon)