pls help me right now​

Pls Help Me Right Now

Answers

Answer 1

Answer:

LETTER

1. D. PURE SUBSTANCES CAN BE FURTHER BROKEN DOWN INTO SIMPLER SUBSTANCES.

2.A

PO PLEASE MARK A BRAINLIESTS ANG MARK A 5 STAR ANG HEART PO PLEASW


Related Questions

plz help me I will mark as brainlest

All three metals react with cold water.
Complete the word equation for these reactions.
metal + water ➡️ _______ + ________​

Answers

Answer:

metal oxide +hydrogen gas

In a reaction, 0.209 moles of gas is evolved. Given that the pressure is 0.669 atm and the volume of the gas is 7.30 L, calculate the
temperature of the gas in Kelvin, giving your answer to three significant figures.
The value of R is 0.0821 L'atm-K-1.mol-1
Temperature =
Kelvin

Answers

16161819292xxdddscccdd

What is the formula for sodium phosphate

Answers

Answer:

Explanation:

It''s chemical formula is Na3PO4

What is a solute?
substance in which another substance dissolves and mixes evenly A

a solution unable to be separated by any means B

a mixture that can easily be separated with simple tools C

the substance that dissolves into another substance D

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The Correct choice is ~ D

Solute is the substance that dissolves into another substance

A strand of DNA has the following string of bases:
TAACGTCG
What is the order of bases of the RNA molecule that is built from this DNA?

Answers

The genetic makeup of the majority of these organisms is either RNA or DNA. For instance, some viruses' genetic material may be RNA whereas others' genetic material may be DNA. RNA is present in the Human Immunodeficiency Virus (HIV), which after adhering to the host cell, transforms into DNA.

DNA is a collection of molecules that is in charge of transporting and passing genetic information from parents to children. A ribonucleic acid called RNA aids in the body's production of proteins. In the human body, new cells are created as a result of this nucleic acid.

Instead of thymine, uracil is present in RNA. All other bases are same as DNA like adenine, guanine and cytosine. The order of bases in RNA is:

UAACGUCG.

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A balloon is partially inflated with 6.00 L of hydrogen at sea level, where the atmospheric pressure is 1.00 atm. The balloon ascends to an altitude of 1500 m, where the pressure is 0.80 atm. What is the volume of the balloon at the higher altitude if the temperature of the hydrogen doesn’t change during the ascend?

Answers

Considering the Boyle's law, the volume of the balloon at the higher altitude is 7.5 L.

The gas laws are a set of chemical and physical laws that allow determining the behavior of gases in a closed system. The parameters evaluated in these laws are pressure, volume, temperature and moles.

Boyle's law is one of the gas laws that states that the pressure of a gas in a closed container is inversely proportional to the volume of the container, when the temperature is constant. In other words, if the pressure increases, the volume decreases; while if the pressure decreases, the volume increases.

Boyle's law is expressed mathematically as:

P× V = k

In this law then two variables are related: pressure and volume, so it is assumed that the temperature of the gas and the number of molecules of the gas are constant.

Studying an initial state 1 and a final state 2 is fulfilled:

P1× V1= P2× V2

In this case, you know:

P1= 1 atmV1= 6 LP2= 0.80 atmV2= ?

Replacing:

1 atm× 6 L= 0.80 atm× V2

Solving:

[tex]V2=\frac{1 atm x 6 L}{0.80 atm}[/tex]

V2= 7.5 L

Finally, the volume of the balloon at the higher altitude is 7.5 L.

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Nail polish remover is something that girls just can't do without. Which of the following has been used as the active ingredient in nail polish remover?
limonene
acetone
methanol
ethanol

Answers

Answer:

Acetone has been used as the active ingredient in nail polish remover.

Name the following Type 3 compound
1. PCIE
2. P406
3. SF6
4. SO3
5. SO2
6. N203
7. SiO2
8. O2F2
9. XeF6

Answers

Answer:

32

Explanation:

HELP ME OUT PLEASE!!!!!!!!!

Compare and contrast model A with model C. How are they alike: How are they different?

A) They are composed of different elements in the same ratio.

B) They are composed of the same elements in different ratios.

C) They are composed of different elements in different ratios

D) The are composed of the same elements but the bond types differ​

Answers

Answer:

Model C has more double the oxygen than A. I think it is B

Explanation:

B I had got this on my chemistry test before and it was right

Bas +
PtF2 →
BaF2 +
Pts
Need to balance it

Answers

it is already balanced

REACTANTS

Barium sulfide (BaS) + platinum (Ii) fluoride

PRODUCT

Barium fluoride (BaF2) + Cooperite (PtS)

Hope this answer helps you dear! take care

What is the temperature, in Celsius, of 20.8 g of carbon dioxide (CO2) in a 575 mL container under 1.5 atm of pressure?

Answers

Answer:

Ideal Gas Law Calculator. Easily calculate the pressure, volume, temperature or quantity in moles of a gas using this combined gas law calculator (Boyle's law calculator, Charles's law calculator, Avogadro's law calculator and Gay Lussac's law calculator in one).Supports a variety of input metrics such as Celsius, Fahrenheit, Kelvin, Pascals, bars, atmospheres, and volume in both metric and

A gas has a volume of 3.7 liters with a pressure of 1.75 atm. What is the pressure of the gas if its volume is raised to 4.5 L?

Answers

Answer:  251 K

Explanation: hope this helps :)

answer this please ......................

Answers

Answer:

River esk the third one is righttt

crude oil is a liquid kind of___________

what is the answer?

Answers

What kind of liquid is crude oil?

First, let's get to know what is crude oil.

crude oil is a naturally occuring petroleum product composed of hydrocarbon deposits and other organic materials. A type of fossil fuel, crude oil is refined to produce usable products including gasoline, diesel, and various other forms of petrochemicals.

What kind of liquid is crude oil?

crude oil is a mixture of comparatively volatile liquid hydrocarbons (compounds composed mainly of hydrogen and carbon), though it also contains some nitrogen, sulfur, and oxygen. those elements form a large variety of complex molecular structures, some of which can be readily identified. regardless of variations, however, almost all crude oil ranges from 82 to 87 carbon by weight and 12 to 15 hydrogen by weight.

What are the uses of crude oil?

crude oil has many uses as the following:

plastics. plastics requires crude oil for it's production.clothing materials like T-shirt, and Short pants.products in your home like furnitures, and kitchenware.transportationget high-quality bulk fuels from Kendrick oil.

so now you know the uses and importance of crude oil.

#let's study

Draw the Lewis structure for C2H4 (whose skeletal structure is H2CCH2). Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. - CHONSPFBrClIXMore

Answers

Answer:

This is a picture of it hope this helps!

The Lewis structure along with bonds for ethene (C₂H₄) is drawn below-

A Lewis Structure is a very simplified representation of the valence shell electrons in a molecule. It is used to show how the electrons are arranged around individual atoms in a molecule.

The shared pairs of electrons are drawn as lines between atoms, while lone pairs of electrons are drawn as dots next to atoms.

They also display the total number of lone pairs present in each of the atoms that constitute the molecule.

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the process of breaking food is to release energy is called _____​

Answers

Answer:

The process by which food is broken down to release energy is called respiration

I hope it helps.

Answer:

Respiration

Explanation:

hope this helps.

đặc điểm cơ bản nào để phân biệt vật thể tự nhiên và vật thể nhân tạo

Answers

Answer:

natural materials like cotton

A reaction between solid sodium hydroxide and gaseous carbon dioxide produced solid sodium carbonate and liquid water. Write out a balanced equation for this reaction.

Answers

Balanced:

2NaOH + CO2 → Na₂CO₃ + H₂O

Explanation:

To balance an equation, the amount of atoms on each side must be equal.

Atom Count on Reactant Side:

Na = 1O = 3H = 1C = 1

Atom Count On Product Side:

Na = 2C = 1O = 4H = 2

As you see, to simply balance the equation, put the 2 in order for the atom count on the reactant side to be equal to the product side. The 2 will add one more of each atom so that its the same as the product side.

what is the final volume (L) of each of the following diluted solutions? a 0.70 M HCl solution prepared from 25 mL of a 6.0 M HCl solution

Answers

The final volume of diluted solution is 214.39 mL

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

Molarity of diluted solution (M₂) = 0.7 M

Molarity of stock solution (M₁) = 6 M

Volume of stock solution (V₁) = 25 mL

Volume of diluted solution (V₂) = ?

M₁V₁ = M₂V₂

6 × 25 = 0.7 × V₂

150 = 0.7 × V₂

Divide both side by 0.7

V₂ = 150 / 0.7

V₂ = 214.39 mL

Therefore, the volume of the diluted solution is 214.39 mL

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Define electrolysis ​

Answers

Electrolysis is the production of a chemical reaction by passing an electric current to liquid containing ions.

Dont need work pls help

Answers

The answer is a low is the correct answer

answer this please thank you

Answers

Answer:

6am

Explanation:

answer this please thank you

If not 6 am then maybe 10am correct me if I’m wrong though

helpp
What mass of carbon dioxide will be produced if
144 g of carbon react with 384 g of oxygen gas
according to the equation C+02 → CO2?

Answers

The mass of the carbon dioxide that will be produced when 144 g of carbon react with 384 g of oxygen gas is 528 g

We'll begin by calculating the masses of C and O₂ that reacted and the mass of CO₂ produced from the balanced equation.

C + O > CO

Molar mass of C = 12 g/mol

Mass of C from the balanced equation = 1 × 12 = 12 g

Molar mass of O₂ = 2 × 16 = 32 g/mol

Mass of O₂ from the balanced equation = 1 × 32 = 32 g

Molar mass of CO₂ = 12 + (2×16) = 44 g/mol

Mass of CO₂ from the balanced equation = 1 ×44 = 44 g

SUMMARY:

From the balanced equation above,

12 g of C reacted with 32 g of O₂ to produce 44 g of CO₂

Next, we shall determine the limiting reactant

From the balanced equation above,

, 12 g of C reacted with 32 g of O₂.

Therefore,

144 g of C will react with = (144 × 32)/12 = 384 g of O₂.

From the calculations made above, we can see that both C and O₂ are sufficient for the reaction. Thus, C and O₂ are both limiting reactants.

Finally, we shall determine the mass of CO₂ obtained from the reaction.

From the balanced equation above,

balanced equation above, 12 g of C reacted to produce 44 g of CO₂.

Therefore,

144 g of C will react to produce = (144 × 44)/12 = 528 g of CO₂.

Thus, the mass of CO₂ obtained from the reaction is 528 g

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GIVING BRAINLY AND 20 POINTS

A sound wave in air has the wavelength of 1.36 m. Calculate its frequency? Assume the speed is 340 m/s.

Answers

Answer: the answer is 0.074Hz

Explanation:

Given, (In air)

Velocity V=340m/s

Frequency f=20,000Hz

Wavelegth λ=?

V=f.λ

λ=

F

V

=

20,000

340

=0.017Hz

Also, Given (in Water)

Velocity, V=1480m/s

Frequencyf=20,000Hz

wavelength, λ=?

V=F.λ

λ=

F

V

=

20,000

1480

=​0.074Hz

Answer:

frequency

Explanation:

frequency is velocity/ wavelength

340/1.36

250

Which of the following types of models is generally used to predict long-term events? a. idea model b. physical model c. computer model d. none of the above Please select the best answer from the choices provided A B C D Mark this and return

Answers

Answer:

C

Computer model is generally used to predict long-term events

I hope it helps.

How many grams are in 0.787 moles of kcn

Answers

Answer:

=> moles = Given mass/molar mass

=> 0.787 = Given mass/(39 + 12 + 14)

=> 0.787 = Given mass/65

=> mass = 0.787 × 65

=> mass = 51.155 g

how many moles are there in 3.25x10^20 particles of lead oxide

Answers

Answer:

5.39 X 10-4

Explanation:

Try Checking It Out If It Right Or Not

i want help with these questions thanks !​

Answers

Answer:

I will give you hints, as follows:

Explanation:

- two words: climate change

- methane smells funny

- the number of electric cars sold each year is increasing

- there´s a reason they´re call "renewable"

- GEOmetry, GEOlogy, GEOthermal

Hope this helps!

what is the name of something that starts with N and ends with G

Answers

Nutmeg

Nubbing

Notifying

Neezing

Nudging

Needing

Niffing

Narcotizing

Nanjing

Neighbouring

Nothing

Nimming

Neighboring

Netting

Nesting

Narcing

Nitpicking

Non-Living

Neutralizing

Nightwalking

Nonspeaking

p-Nitrobenzaldehyde is more reactive toward nucleophilic additions than pmethoxybenzaldehyde. Explain

Answers

The presence of electron donating methoxy group in  p-methoxybenzaldehyde , makes it less reactive towards  nucleophilic additions.

Nucleophilic addition reactions that involve of p-Nitrobenzaldehyde and p-methoxybenzaldehyde both occur at the C=O functional group. The electron density around the carbonyl is a key factor that controls the reactivity of each compound.

In  p-Nitrobenzaldehyde, the electron withdrawing nitro group decreases the electron density around the carbonyl making it more vulnerable to nucleophilic attack.

In p-methoxybenzaldehyde, the methoxy group donates electrons by resonance towards the carbonyl thereby increasing the electron density around it so that it is less reactive towards nucleophillic addition reaction.

The nucleophilic attack on p-Nitrobenzaldehyde leads to more resonance structures than nucleophilic attack on p-methoxybenzaldehyde.

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