What is the pressure of 13.7 mol of acetylene in a 48.1 L cylinder at 67.0 °C?

Answers

Answer 1

Answer:

hinojosa has caught you cheating

Explanation:

ur mom

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Related Questions

In 2Fe+3Cl2=2FeCl3, how much iron (Fe) is needed to produce 4 moles of FeCl3?

In 2Fe+3Cl2=2FeCl3, how much FeCl3 is produced when 5 moles of Fe react in excess chlorine?​

Answers

Answer:

4 mol Fe

5 mol FeCl₃

Explanation:

Step 1: Write the balanced equation

2 Fe + 3 Cl₂ ⇒ 2 FeCl₃

Step 2: Calculate how much iron (Fe) is needed to produce 4 moles of FeCl₃

According to the balanced equation, the molar ratio of Fe to FeCl₃ is 2:2.

4 mol FeCl₃ × 2 mol Fe/2 mol FeCl₃ = 4 mol Fe

Step 3: Calculate how much FeCl₃ is produced when 5 moles of Fe react in excess chlorine

According to the balanced equation, the molar ratio of Fe to FeCl₃ is 2:2.

5 mol Fe × 2 mol FeCl₃/2 mol Fe = 5 mol FeCl₃

Use the dichotomous key to identify these plant leaves.



Leaves from which plant are shown?

pine
catalpa
dogwood
maple

Answers

there’s not a picture of a dichotomous key

Answer:

catalpa

Explanation:

i took the test


A solution is any mixture of two or more substances.
TRUE or
FALSE

Answers

Answer:

true

Explanation:

true. hope this helps

WILL GIVE BRAINLIEST!!

What adaptation helps the pelican to swim?
Big wings
Long beak
Strong legs
Webbed feet

Answers

webbed feet!!!!!!!!!!!!
It is long beak and big wings

A certain element has a half-life of three years.

If you currently have a 10g sample of that element and you know that it has undergone five half-life decays, how many grams of the element were in the sample originally?

A
150g
B
160g
C
320g
D
50g

Answers

(C) 320 g

Explanation:

A = A02^(-t/hl)

where hl = half-life

A0 = original amount

A = present amount

t = elapsed time = 5 half-lives

10g = A02^(-5) = A0/32

A0 = 32×(10 g) = 320 g

How many joules of heat are needed to raise the temperature of 30.0 g of aluminum from 22°C to 80°C, if the specific heat of aluminum is 0.90 J/g°C?

Answers

Answer: There are 1566 joules of heat needed to raise the temperature of 30.0 g of aluminum from 22°C to 80°C, if the specific heat of aluminum is 0.90 J/g°C.

Explanation:

Given: Mass = 30.0 g

Specific heat = [tex]0.90 J/g^{o}C[/tex]

[tex]T_{1} = 22^{o}C[/tex]

[tex]T_{2} = 80^{o}C[/tex]

Formula used to calculate the heat energy requires is as follows.

[tex]q = m \times C \times (T_{2} - T_{1})[/tex]

where,

q = heat energy

m = mass of substance

C = specific heat capacity of substance

[tex]T_{1}[/tex] = initial temperature

[tex]T_{2}[/tex] = final temperature

Substitute the values into above formula as follows.

[tex]q = m \times C \times (T_{2} - T_{1})\\= 30.0 g \times 0.90 J/g^{o}C \times (80 - 22)^{o}C\\= 1566 J[/tex]

Thus, we can conclude that there are 1566 joules of heat needed to raise the temperature of 30.0 g of aluminum from 22°C to 80°C, if the specific heat of aluminum is 0.90 J/g°C.

In the buffer solution CH3COsH(aq) -> H3O+(aq) + CH3CO2-(aq)

A. H3O+ is an acid, and CH3CO2H is its conjugate base.

B. CH3CO2H is an acid, and CH3CO2- is its conjugate base.

C. H3O+ is an acid, and CH3CO2- is its conjugate base.

D. CH3CO2H is a base, and H3O+ is its conjugate acid

Answers

In the buffer solution CH₃COOH (aq) ---> H₃O⁺(aq) + CH₃CO₂⁻(aq):

CH₃CO₂H is a base, and H₃O⁺ is its conjugate acid.

Option D is correct.

What is an acid?

An acid is described as a molecule or ion capable of either donating a proton, known as a Brønsted–Lowry acid, or forming a covalent bond with an electron pair, known as a Lewis acid.

From the buffer solution above, H₃O⁺ is the conjugate acid because it donates a proton (H⁺) to a base CH₃CO₂H.

In conclusion, A conjugate acid, within the Brønsted–Lowry acid–base theory, is described as a chemical compound formed when an acid donates a proton (H⁺) to a base.

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13) Which "conversion tool" below would you use to complete this
conversion?

Answers

Avogadro’s number: 6.022 x 10^23

In order to tell the difference between microwaves and visible light in the blue range, which of the following measurements should be made?

Answers

Answer:

microwaves should be made

Answer:

answer choices plzzzzz

ima edit my answer wht are the choices

Explanation:

mrk mE BRAINLIEST PLZZZZZZZZZZZz

Which best describes nuclear fusion? O A nucleus spontaneously splits and absorbs energy O Two nuclei spontaneously combine and absorb energy. O A nucleus collides with a neutron and splits, releasing energy. O Nuclei combine to form a heavier nucleus, releasing energy. ​

Answers

Answer: Nuclei combine to form a heavier nucleus, releasing energy. ​

Explanation:   e.g two deuterium nucleus (Hydrogen-2 isotopes) forms an He nucleus and energy is released.

Nuclear fusion is when nuclei combine to form heavier nuclei, releasing energy.

What is Nuclear Fusion?

Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles (neutrons or protons). The difference in mass between the reactants and products is manifested as either the release or absorption of energy.

The release of energy with the fusion of light elements is due to the interplay of two opposing forces: the nuclear force, a manifestation of the strong interaction, which holds protons and neutrons tightly together in the atomic nucleus; and the Coulomb force, which causes positively charged protons in the nucleus to repel each other.

Nuclear fusion is also observed in stars.

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The speed you read from your speedometer is your ____________________. *
average speed
direction
instantaneous speed
distance

Answers

Instantaneous speed because that is the speed in which the object (the car) is at in a given moment.

Answer:

it is your instantaneous speed

Explanation:

A rarefraction is generated when particles move
A:together
B.closer
C.under
D.apart

Answers

The answer is D, apart

What is described by the frequency of a wave?
A. The speed the wave is traveling through space
B. The number of waves that pass a point in 1 second
C. The height of the wave from trough to peak
D. The distance from one peak to the next peak

Answers

Taking into account the definition of frecuency, the statement "The number of waves that pass a point in 1 second" describes the frequency of a wave.

Definition of frequency

Frequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).

In other words, the frequency in wave phenomena, such as sound, electromagnetic waves (such as radio or light), electrical signals or other waves, expresses the number of times the phenomenon is repeated per unit of time. For example, if a wave repeats ten times per second, it means that it has a frequency of ten cycles per second.

Summary

Finally, the statement "The number of waves that pass a point in 1 second" describes the frequency of a wave.

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PLEASE HELP.
What does the atomic number of an element tell us?
A) the number of neutrons in an atom of an element
B) the number of protons in an atom of an element
C) the number of protons, electrons, and neutrons in an element

Answers

The actual answer is B, the number of protons in an atom of an element :)

How many molecules are in 5.00 grams of NH3?
a 0.294
b 0.333
C 1.77 x 1023
d 6.68 x 1022
e 2.00 x 1023

Answers

Answer:

C. 1.77x 1023

Explanation:

Not sure please correct me if im wrong

Convert 444 cal to joules

Answers

Answer: 1

Decimal Answer: 1.858

Consider the statement:

“The following report presents the results of our laboratory tests, which support the conclusion that our new treatment for acne is safe and effective with minimal possible side effects.”

What questions should a person ask themselves to determine if this scientific study is reliable?
What does the acne medicine look like?
What does the acne medicine smell like?
Were laboratory tests conducted by the same company that produces the acne medicine?
Were laboratory tests conducted in a laboratory with more than 100 employees?

Answers

The question the person should ask him/herself to probably check for authenticity of the drugs is "Were laboratory tests conducted by the same company that produces the ac[tex]\cap[/tex]e medicine?". Option C. This is further explained below.

What is a scientific study?

Generally, scientific study is simply defined as a method that includes making conjectures and deriving answers as logical implications from the hypotheses.

In conclusion, Were laboratory tests conducted by the same company that produces the ac[tex]\cap[/tex]e medicine should be questioned as medical companies should look to other labs for authenticity confirmation.

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At a high concentration do you have more or less particles per unit volume

Answers

Answer:

More particles per unit volume

Explanation:

Concentration means the amount of solute in a solution. Now, the amount of solute also means the number of particles of solute present in a solution.

Hence, when we use the term "high concentration", we imply that the amount of solute present or the number of particles present in a solution is high.

Thus, at high concentration, there are more solute particles than solvent particles in a solution.

If you have 2.9 x 10^21 atoms of nitrogen, how many moles do you have?

Answers

Answer: Approximately [tex]0.48 \times 10^{-2} \ \text{ mole}[/tex]

============================================================

Explanation:

There are roughly 6.02 * 10^23 atoms in one mole of any element. So we have 6.02 * 10^23 atoms in one mole of nitrogen.

We can then do the following conversion:

[tex]\left(2.9 \times 10^{21} \ \text{ atoms of nitrogen} \right)\times \left(\frac{1 \ \text{ mole}}{6.02 \times 10^{23} \ \text{ atoms}}\right)\\\\\frac{2.9 \times 10^{21}}{6.02 \times 10^{23}} \ \text{ mole}\\\\\frac{2.9}{6.02} \times 10^{21-23} \ \text{ mole}\\\\0.48172757 \times 10^{-2} \ \text{ mole}\\\\0.48 \times 10^{-2} \ \text{ mole}\\\\[/tex]


H2O2 (yield) H2O + O2


If 650 grams of hydrogen peroxide is allowed to decompose, how much water and
oxygen will be created? If 255 grams of oxygen are collected, what is the percent
yield?

Answers

The decomposition reaction is:
2 H2O2 = 2 H2O + O2

1) Draw a particle picture of liquid lemonade turning into a solid popsicle
BEFORE
AFTER

Answers

Explanation:

The particles are further apart in liquids than in solids so when the lemonade changes from a liquid to a solid, the particles would become closer.

why do different people have differently shaped proteins?

Answers

The sequence of amino acids in the chain determines how the chain will fold up to make the protein, so different proteins have different three-dimensional shapes. ... This is because proteins form attachments and interact with many other molecules and structures inside organisms.

A small ferret comes to help Roxie with the rock that is blocking her den. They push with a total force of 90 N moving the boulder a distance of 5m. How much work do they do?​

Answers

Answer:

Work = 450 J

Explanation:

Force = 90N

Distance = 5m

Work = ?

The relationship between these quantities is given by the equation:

Work = Force * Distance

Work = 90 * 5

Work = 450 J

A rocket launches because of __________.
A. an opposite reaction
B. it's large mass
C. its gravity
D. air resistance

Answers

Answer:

an opposite reaction

Earth's gravity is still pulling down on the rocket. When a rocket burns propellants and pushes out exhaust, that creates an upward force called thrust. To launch, the rocket needs enough propellants so that the thrust pushing the rocket up is greater than the force of gravity pulling the rocket down.

NEED HELP ASAP 20 POINTS !!!!!What does a subscript in a chemical formula tell you? For example the 3 in Rb3PO4 the number of atoms of the element symbol it follows the number of atoms of the element symbol it is in front of the number of molecules​

Answers

Answer:

The answer should be A

Explanation:

because the definition of a subscript is that they indicate the number of atoms of an element present in am molecule or formula unit.

Answer:

The first choice. The rule is go left. Those subscript numbers always talk about the element to the left of them.

Explanation:

The straight forward answer is the first one.

You should always answer that when reading the chemical make up of molecules. Let's look at some examples.

C8 H18

Consider the 8. It must be describing how many carbons there are. If it was meant for the hydrogen, then what  does the 18 mean? You wouldn't know.

Now look at something a lot more complicated.

Mg3(PO4)2

Use the going left rule. That satisfies Mg doesn't it? There are 3 of them and 3 is correct.

The two at the end is also straightforward if you think about it. It must be telling you how many molecules are in the brackets. If that were not so, then you wouldn't be able to tell what it did. So there are 2 PO4

But you still have the 4 to deal with. Use the going left rule again. 4 must be telling you how many oxygens you have inside the brackets. There are 4 of them.

What is not matter in chemistry?? ​

Answers

Explanation:

Examples of things that are not matter include thoughts, feelings, light, and energy. Light, heat, kinetic and potential energy, and sound are non-matter because they are massless.

What is the pH of a 0.21 M solution of LiOH?

Answers

Answer:

13.32

Explanation:

pOH=-log(0.21)=0.68

pH=14-pOH=14-0.68=13.32

36 g of KOH was dissolved in 800 mL of water. What is the
molality of the solution? (Molar mass of KOH = 56 g/mol,
density of water = 1.00 g/mL) ___ m.

Answers

Answer: 0.8 m

Explanation:

Pretend your friend was absent from class today...
Write what you would say if you had to explain how and why elements to
your friend.

Answers

Answer:

how and why elements what?? why they exist?? im gonna assume that's what you meant, so elements exist because we're all on earth and without elements, we don't have resources to live. the earth is made of elements and if there were none, we wouldn't even have a planet

Explanation:

^

Incomplete question

Help for brainliest

Answers

Answer:

those things that looks like cristals

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